NEET 2013 | NEET Year Wise Previous Years Questions

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1. For a normal eye, the cornea of eye provides a converging power of 40 D and the least converging power of the eye lens b 2. Two pith balls carrying equal charges are suspended from a common point by strings of equal length, the equilibrium sepa 3. The resistances of the four arms P, Q, R and S in a Wheatstone's bridge are 10 ohm, 30 ohm, 30 ohm and 90 ohm, respectiv 4. The internal resistance of a 2.1 V cell which gives a current of 0.2 A through a resistance of 10 $$\Omega $$ is 5. A wire of resistance 4 $$\Omega $$ is stretched to twice its original length. The resistance of stretched wire would be 6. When a proton is released from rest in a room, it starts with an initial acceleration $$a$$0 towards west. When it is pr 7. A current loop in a magnetic field 8. A bar magnet of length $$'l'$$ and magnetic dipole moment 'M' is bent in the form of an arc as shown in figure. The new 9. A wire loop is rotated in a magnetic field. The frequency of change of direction of the induced e.m.f. is 10. A coil of self-inductance L is connected in series with a bulb B and an AC source. Brightness of the bulb decreases when 11. The condition under which a microwave oven heats up a food item containing water molecules most efficiently is 12. A plano convex lens fits exactly into a plano concave lens. Their plane surfaces are parallel to each other. If lenses a 13. A, B and C are three points in a uniform electric field. The electric potential is 14. In Young's double slit experiment, the slits are 2 mm apart and are illuminated by photons of two wavelengths $${\lambda 15. A parallel beam of fast moving electrons is incident normally on a narrow slit. A fluorescent screen is placed at a larg 16. For photoelectric emission from certain metal the cutoff frequency is $$\upsilon $$. If radiation of frequency 2$$\upsil 17. The wavelength $$\lambda $$e of an electron and $$\lambda $$p of a photon of same energy E are related by 18. Ratio of longest wave lengths corresponding to Lyman and Balmer series in hydrogen spectrum is 19. A certain mass of Hydrogen is changed to Helium by the process of fusion. The mass defect in fusion reaction is 0.02866 20. The output (X) of the logic circuit shown ion figure will be 21. A piece of iron is heated in a flame. It first becomes dull red then becomes reddish yellow and finally turns to white h 22. A stone falls freely under gravity. It covers distances h1, h2 and h3 in the first 5 seconds, the next 5 seconds and th 23. The velocity of a projectile at the initial point A is $$\left( {2\widehat i + 3\widehat j} \right)$$ m/s. It's velocity 24. An explosion breaks a rock into three parts in a horizontal plane. Two of them go off at right angles to each other. Th 25. The upper half of an inclined plane of inclination $$\theta $$ is perfectly smooth while lower half is rough. A block st 26. Three blocks with masses m, 2m and 3m are connected by strings, as shown in the figure. After an upward force F is appli 27. A uniform force of $$\left( {3\widehat i + \widehat j} \right)$$ newton acts on a particle of mass 2 kg. Hence the parti 28. A small object of uniform density rolls up a curved surface with an initial velocity 'v'. It reaches upto a maximum heig 29. A rod PQ of mass M and length L is hinged at end P. The rod is kept horizontal by a massless string tied to point Q as s 30. A body of mass 'm' is taken from the earth's surface to the height equal to twice the radius (R) of the earth. The chang 31. Infinite number of bodies, each of mass 2 kg are situated on x-axis at distance 1 m, 2 m, 4 m, 8 m, . . . , respectively 32. The wettability of a surface by a liquid depends primarily on 33. The molar specific heats of an ideal gas at constant pressure and volume are denoted by Cp and Cv, respectively. If &nbs 34. The following four wires are made of the same material. Which of these will have the largest extension when the same ten 35. The amount of heat energy required to raise the temperature of 1 g of Helium at NTP, from T1K to T2K is 36. In the given (V $$-$$ T) diagram, what is the relation between pressure P1 and P2? 37. A gas is taken through the cycle A $$ \to $$ B $$ \to $$ C $$ \to $$ A, as shown. what is the net work done by the gas 38. During an adiabatic process, the pressure of a gas is found to be proportional to the cube of its temperature. The ratio 39. If we study the vibration of a pipe open at both ends. then the following statement is not true. 40. A wave travelling in the + ve x-direction having displacement along y-direction as 1 m, wavelength 2$$\pi $$ m and freq 41. A source of unknown frequency gives 4 beats/s when sounded with a source of known frquency 250 Hz. The second harmonic o 42. If an experiment four quantities a, b, c and d are measured with percentage error 1%, 2%, 3% and 4% respectively. Quant

NEET 2013

MCQ (Single Correct Answer)

-1

A, B and C are three points in a uniform electric field. The electric potential is

NEET 2013 Physics - Electrostatics Question 63 English

maximum at C

same at all the three points A, B and C

maximum at A

maximum at B

NEET 2013

MCQ (Single Correct Answer)

-1

In Young's double slit experiment, the slits are 2 mm apart and are illuminated by photons of two wavelengths $${\lambda _1}$$ = 12000 $$\mathop A\limits^ \circ $$ and $${\lambda _2}$$ = 10000 $$\mathop A\limits^ \circ $$. At what minimum distance from the common central bright fringe on the screen 2 m from the slit will a bright fringe from one interference pattern coincide with a bright fringe from the other ?

4 mm

3 m

8 mm

6 mm

NEET 2013

MCQ (Single Correct Answer)

-1

A parallel beam of fast moving electrons is incident normally on a narrow slit. A fluorescent screen is placed at a large distance from the slit. If the speed of the electrons is increased, which of the following statements is correct ?

The angular width of the central maximum will decrease.

The angular wifth of the central maximum will be unaffected.

Diffraction pattern is not observed on the screen in the case of electrons.

The angular width of the central maximum of the diffraction pattern will increase.

NEET 2013

MCQ (Single Correct Answer)

-1

For photoelectric emission from certain metal the cutoff frequency is $$\upsilon $$. If radiation of frequency 2$$\upsilon $$ impinges on the metal plate, the maximum possible velocity of the emitted electron will be (m is the electron mass)

$$\sqrt {{{2h\upsilon } \over m}} $$

$$2\sqrt {{{h\upsilon } \over m}} $$

$$\sqrt {{{h\upsilon } \over {\left( {2m} \right)}}} $$

$$\sqrt {{{h\upsilon } \over m}} $$

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