NEET 2018
Paper was held on Sun, May 6, 2018 10:00 AM
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Biology

Match the items given in column I with those in column II and select the correct option given below. .tg {border-coll
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Which among the following is not a prokaryote?
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Select the wrong statement.
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Oxygen is not produced during photosynthesis by
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After karyogamy followed by meiosis, spores are produced exogenously in
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Ciliates differ from all other protozoans in
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Which one is wrongly matched?
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Which of the following organisms are known as chief producers in the oceans?
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Which of the following statements is correct?
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Which of the following animals does not undergo metamorphosis?
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Identify the vertebrate group of animals characterised by crop and gizzard in its digestive system.
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Which one of these animals is not a homeotherm?
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Sweet potato is a modified
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Stomata in grass leaf are
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Secondary xylem and phloem in dicot stem are produced by
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Casparian strips occur in
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Plants having little or no secondary growth are
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The Golgi complex participates in
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Which of the following is true for nucleolus?
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Which of the following features is used to identify a male cockroach from a female cockroach?
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Which of the following events does not occur in rough endoplasmic reticulum?
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Select the incorrect match.
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The two functional groups characteristic of sugars are
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The stage during which separation of the paired homologous chromosomes begins is
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Which of the following is not a product of light reaction of photosynthesis?
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Which of these statements is incorrect?
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Match the items given in column I with those in column II and select the correct option given below. .tg {border-colla
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Match the items given in column I with those in column II and select the correct option given below. .tg {border-colla
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Which of the following is an occupational respiratory disorder?
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Match the items given in column I with those in column II and select the correct option given below. .tg {border-colla
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Match the items given in column I with those in column II and select the correct option given below. .tg {border-colla
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Match the items given in column I with those in column II and select the correct option given below. .tg {border-colla
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What is the role of NAD+ in cellular respiration?
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Which of the following options correctly represents the lung conditions in asthma and emphysema, respectively?
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Nissl’s bodies are mainly composed of
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Calcium is important in skeletal muscle contraction because it
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Which of the following structures or regions is incorrectly paired with its functions?
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The transparent lens in the human eye is held in its place by
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Which of the following hormones can play a significant role in osteoporosis?
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Which of the following is an amino acid derived hormone?
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Hormones secreted by the placenta to maintain pregnancy are
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Which of the following has proved helpful in preserving pollen as fossils?
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The amnion of mammalian embryo is derived from
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The difference between spermiogenesis and spermiation is
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Winged pollen grains are present in
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Double fertilization is
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Match the items given in column I with those in column II and select the correct option given below. .tg {border-colla
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The contraceptive ‘Saheli’
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Which of the following characteristics represent 'Inheritance of blood groups' in humans? a. Dominance b. Co-dominance
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Which of the following pairs is wrongly matched?
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Select the correct match :
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A woman has an X-linked condition on one of her X chromosomes. This chromosome can be inherited by
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The experimental proof for semi-conservative replication of DNA was first shown in a
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Select the correct statement :
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Select the correct match :
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Many ribosomes may associate with a single mRNA to form multiple copies of a polypeptide simultaneously. Such strings of
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All of the following are part of an operon except
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AGGTATCGCAT is a sequence from the coding strand of a gene. What will be the corresponding sequence of the transcribed m
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Among the following sets of examples for divergent evolution, select the incorrect option.
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The similarity of bone structure in the forelimbs of many vertebrates is an example of
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According to Hugo de Vries, the mechanism of evolution is
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Which part of poppy plant is used to obtain the drug “smack”?
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Conversion of milk to curd improves its nutritional value by increasing the amount of
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Which of the following is not an autoimmune disease?
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In which disease does mosquito transmitted pathogen cause chronic inflammation of lymphatic vessels?
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Which of the following is commonly used as a vector for introducing a DNA fragment in human lymphocytes?
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Which one of the following population interactions is widely used in medical science for the production of antibiotics?
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The correct order of steps in Polymerase Chain Reaction (PCR) is
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Pneumatophores occur in
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Use of bioresources by multinational companies and organisations without authorisation from the concerned country and it
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Niche is
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In India, the organisation responsible for assessing the safety of introducing genetically modified organisms for public
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A 'new' variety of rice was patented by a foreign company, though such varieties have been present in India for a long t
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Natality refers to
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Which one of the following plants shows a very close relationship with a species of moth, where none of the two can comp
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All of the following are included in ‘ex-situ conservation’ except
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Pollen grains can be stored for several years in liquid nitrogen having a temperature of
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In a growing population of a country,
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What type of ecological pyramid would be obtained with the following data? Secondary consumer : 120 g Primary consumer :
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Chemistry

A mixture of 2.3 g formic acid and 4.5 g oxalic acid is treated with conc. H2SO4 . The evolved gaseous mixture is passed
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In which case is number of molecules of water maximum?
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Which one is a wrong statement?
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The correct order of atomic radii in group 13 elements is
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Which of the following oxides is most acidic in nature?
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Consider the following species : CN+ , CN– , NO and CN. Which one of these will have the highest bond order?
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The bond dissociation energies of X2 , Y2 and XY are in the ratio of 1 : 0.5 : 1. $$\Delta $$H for the formation of XY
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In the structure of ClF3 , the number of lone pairs of electrons on central atom ‘Cl’ is
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The solubility of BaSO4 in water is 2.42 × 10–3 g L–1 at 298 K. The value of its solubility product (Ksp) will be (Give
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Following solutions were prepared by mixing different volumes of NaOH and HCl of different concentrations : A. 60 mL $${
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Which one of the following conditions will favour maximum formation of the product in the reaction A2(g) + B2(g) ⇌ X2(g
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For the redox reaction, MnO4– + C2O4 2– + H+ $$ \to $$ Mn2+ + CO2 + H2O The correct coefficients of the reactants for
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Consider the change in oxidation state of bromine corresponding to different emf values as shown in the given diagram :
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The correct order of N-compounds in its decreasing order of oxidation states is
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Which of the following is correct with respect to – I effect of the substituents? (R = alkyl)
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Which one of the following elements is unable to form MF63– ion?
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Which of the following molecules represents the order of hybridisation sp2 , sp2 , sp, sp from left to right atoms?
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Which of the following carbocations is expected to be most stable?
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Hydrocarbon (A) reacts with bromine by substitution to form an alkyl bromide which by Wurtz reaction is converted to gas
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The correct difference between first and second order reactions is that
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When initial concentration of the reactant is doubled, the half-life period of a zero order reaction
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Which of the following statements is not true for halogens?
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Which one of the following ions exhibits d-d transition and paramagnetism as well?
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Match the metal ions given in Column I with the spin magnetic moments of the ions given in Column II and assign the corr
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The type of isomerism shown by the complex [CoCl2(en)2] is
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The geometry and magnetic behaviour of the complex [Ni(CO)4] are
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The compound A on treatment with Na gives B, and with PCl5 gives C. B and C react together to give diethyl ether. A, B
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Iron carbonyl, Fe(CO)5 is
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In the reaction, the electrophile involved is
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Compound A, C8H10O, is found to react with NaOI (produced by reacting Y with NaOH) and yields a yellow precipitate with
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The compound C7H8 undergoes the following reactions : The product ‘C’ is
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Identify the major products P, Q and R in the following sequence of reactions :
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Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecular mass. It i
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Nitration of aniline in strong acidic medium also gives m-nitroaniline because
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The difference between amylose and amylopectin is
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Which of the following compounds can form a zwitter ion?
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Physics

A student measured the diameter of a small steel ball using a screw gauge of least count 0.001 cm. The main scale readin
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Which one of the following statements is incorrect?
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A moving block having mass m, collides with another stationary block having mass 4m. The lighter block comes to rest aft
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A block of mass m is placed on a smooth inclined wedge ABC of inclination q as shown in the figure. The wedge is given a
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A body initially at rest and sliding along a frictionless track from a height h (as shown in the figure) just completes
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A solid sphere is in rolling motion. In rolling motion a body possesses translational kinetic energy (Kt) as well as rot
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A solid sphere is rotating freely about its symmetry axis in free space. The radius of the sphere is increased keeping i
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The power radiated by a black body is P and it radiates maximum energy at wavelength, $$\lambda $$0 . If the temperature
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Three objects, A : (a solid sphere), B : (a thin circular disk) and C : (a circular ring), each have the same mass M and
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The kinetic energies of a planet in an elliptical orbit about the Sun, at positions A, B and C are KA, KB and KC, respec
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Two wires are made of the same material and have the same volume. The first wire has cross-sectional area A and the seco
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The efficiency of an ideal heat engine working between the freezing point and boiling point of water, is
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The moment of the force, $$\overrightarrow F = 4\widehat i + 5\widehat j - 6\widehat k$$ at (2, 0, –3), about the point
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A sample of 0.1 g of water at 100°C and normal pressure (1.013 × 105 N m–2) requires 54 cal of heat energy to convert t
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The volume (V) of a monatomic gas varies with its temperature (T), as shown in the graph. The ratio of work done by the
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A small sphere of radius ‘r’ falls from rest in a viscous liquid. As a result, heat is produced due to viscous force. Th
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If the mass of the Sun were ten times smaller and the universal gravitational constant were ten times larger in magnitud
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The fundamental frequency in an open organ pipe is equal to the third harmonic of a closed organ pipe. If the length of
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A tuning fork is used to produce resonance in a glass tube. The length of the air column in this tube can be adjusted by
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A pendulum is hung from the roof of a sufficiently high building and is moving freely to and fro like a simple harmonic
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The electrostatic force between the metal plates of an isolated parallel plate capacitor C having a charge Q and area A,
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An electron falls from rest through a vertical distance h in a uniform and vertically upward directed electric field E.
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At what temperature will the rms speed of oxygen molecules become just sufficient for escaping from the Earth’s atmosphe
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A carbon resistor of (47 $$ \pm $$ 4.7) k$$\Omega $$ is to be marked with rings of different colours for its identificat
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A battery consists of a variable number n of identical cells (having internal resistance r each) which are connected in
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A set of n equal resistors, of value R each, are connected in series to a battery of emf E and internal resistance R. Th
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A toy car with charge q moves on a frictionless horizontal plane surface under the influence of a uniform electric field
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A metallic rod of mass per unit length 0.5 kg m–1 is lying horizontally on a smooth inclined plane which makes an angle
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A thin diamagnetic rod is placed vertically between the poles of an electromagnet. When the current in the electromagnet
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The magnetic potential energy stored in a certain inductor is 25 mJ, when the current in the inductor is 60 mA. This ind
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Current sensitivity of a moving coil galvanometer is 5 div/mA and its voltage sensitivity (angular deflection per unit v
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An inductor 20 mH, a capacitor 100 $$\mu $$F and a resistor 50 $$\Omega $$ are connected in series across a source of em
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The refractive index of the material of a prism is $$\sqrt 2 $$ and the angle of the prism is 30°. One of the two refrac
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An EM wave is propagating in a medium with a velocity $$\overrightarrow v = v\widehat i$$. The instantaneous oscillatin
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An object is placed at a distance of 40 cm from a concave mirror of focal length 15 cm. If the object is displaced throu
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In Young’s double slit experiment the separation d between the slits is 2 mm, the wavelength $$\lambda $$ of the light u
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Unpolarised light is incident from air on a plane surface of a material of refractive index $$\mu $$. At a particular an
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An astronomical refracting telescope will have large angular magnification and high angular resolution, when it has an o
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An electron of mass m with an initial velocity $$\overrightarrow v = {v_0}\widehat i$$ (v0 > 0) enters an electric
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When the light of frequency 2$${\upsilon _0}$$ (where $${\upsilon _0}$$ is threshold frequency), is incident on a meta
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In the combination of the following gates the output Y can be written in terms of inputs A and B as
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The ratio of kinetic energy to the total energy of an electron in a Bohr orbit of the hydrogen atom, is
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In a p-n junction diode, change in temperature due to heating
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