Wave Optics · Physics · MHT CET

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MCQ (Single Correct Answer)

MHT CET 2024 9th May Morning Shift
A wavefront is a surface
MHT CET 2024 9th May Morning Shift
Two wavelength 590 nm and 596 nm of sodium light are used one after other, to study the diffraction taking place at a single slit of aperture 2.4 mm ....
MHT CET 2024 4th May Evening Shift
A parallel beam of light of intensity $I_0$ is incident on a glass plate, $25 \%$ of light is reflected by upper surface and $50 \%$ of light is refle...
MHT CET 2024 4th May Evening Shift
A single slit of width $d$ is illuminated by violet light of wavelength 400 nm and the width of the diffraction pattern is measured as ' Y '. When hal...
MHT CET 2024 4th May Evening Shift
In a biprism experiment, monochromatic light of wavelength ' $\gamma$ ' is used. The distance between the two coherent sources ' $d$ ' is kept constan...
MHT CET 2024 4th May Morning Shift
Three identical polaroids $P_1, P_2$ and $P_3$ are placed one after another. The pass axis of $P_2$ and $P_3$ are inclined at an angle $60^{\circ}$ an...
MHT CET 2024 3rd May Evening Shift
In Young's double slit experiment, in an interference pattern, second minimum is observed exactly in front of one slit. The distance between the two c...
MHT CET 2024 3rd May Evening Shift
A screen is placed at 50 cm from a single slit, which is illuminated with light of wavelength 600 nm . If separation between the $1^{\text {st }}$ and...
MHT CET 2024 3rd May Evening Shift
In Young's double slit experiment using monochromatic light of wavelength ' $\lambda$ ', the intensity of light at a point on the screen where path di...
MHT CET 2024 3rd May Morning Shift
In an interference experiment, the $\mathrm{n}^{\text {th }}$ bright fringe for light of wavelength $\lambda_1(\mathrm{n}=0,1,2,3 \ldots)$ coincides w...
MHT CET 2024 3rd May Morning Shift
A single slit diffraction pattern is formed with light of wavelength $6195 \mathop A\limits^o$. The second secondary maximum for this wavelength coinc...
MHT CET 2024 3rd May Morning Shift
When wavefronts pass from denser medium to rarer medium, the width of the wavefront
MHT CET 2024 2nd May Evening Shift
A diffraction pattern is obtained using a beam of red light. If red light is replaced by blue light then
MHT CET 2024 2nd May Evening Shift
The intensity ratio of the maxima and minima in an interference pattern produced by two coherent sources of light is $9: 1$. The intensities of the li...
MHT CET 2024 2nd May Evening Shift
Two points separated by a distance of 0.1 mm can just be seen in microscope when light of wavelength $6000 \mathop A\limits^o $ is used. If the light ...
MHT CET 2024 2nd May Morning Shift
The intensity of light coming from one of the slits in Young's double slit experiment is double the intensity from the other slit. The ratio of the ma...
MHT CET 2024 2nd May Morning Shift
In a Young's double slit experiment, the source is white light. One of the holes is covered by a red filter and another by a blue filter. In this case...
MHT CET 2023 14th May Evening Shift
On replacing a thin film of mica of thickness $$12 \times 10^{-5} \mathrm{~cm}$$ in the path of one of the interfering beams in Young's double slit ex...
MHT CET 2023 14th May Evening Shift
When two light waves each of amplitude '$$A$$' and having a phase difference of $$\frac{\pi}{2}$$ superimposed then the amplitude of resultant wave is...
MHT CET 2023 14th May Evening Shift
Two wavelengths of sodium light $$590 \mathrm{~nm}$$ and $$596 \mathrm{~nm}$$ are used one after another to study diffraction due to single slit of ap...
MHT CET 2023 14th May Morning Shift
The diffraction fringes obtained by a single slit are of
MHT CET 2023 14th May Morning Shift
In Young's double slit experiment, $$8^{\text {th }}$$ maximum with wavelength '$$\lambda_1$$' is at a distance '$$d_1$$' from the central maximum and...
MHT CET 2023 14th May Morning Shift
If $$\mathrm{I}_0$$ is the intensity of the principal maximum in the single slit diffraction pattern, then what will be the intensity when the slit wi...
MHT CET 2023 13th May Evening Shift
Light of wavelength $$5000 \mathop A\limits^o$$ is incident normally on a slit. The first minimum of the diffraction pattern is observed to lie at a d...
MHT CET 2023 13th May Evening Shift
The path difference between two identical light waves at a point $$Q$$ on the screen is $$3 \mu \mathrm{m}$$. If wavelength of the waves is $$5000 \ma...
MHT CET 2023 13th May Evening Shift
Of the two slits producing interference in Young's experiment, one is covered with glass so that light intensity passing is reduced to $$50 \%$$. Whic...
MHT CET 2023 13th May Morning Shift
In a biprism experiment, monochromatic light of wavelength '$$\lambda$$' is used. The distance between two coherent sources '$$\mathrm{d}$$' is kept c...
MHT CET 2023 13th May Morning Shift
$$\mathrm{A}$$ and $$\mathrm{B}$$ are two interfering sources where $$\mathrm{A}$$ is ahead in phase by $$54^{\circ}$$ relative to B. The observation ...
MHT CET 2023 12th May Evening Shift
The ratio of intensities of two points on a screen in Young's double slit experiment when waves from the two slits have a path difference of $$\frac{\...
MHT CET 2023 12th May Evening Shift
In Young's double slit experiment when a glass plate of refractive index 1.44 is introduced in the path of one of the interfering beams, the fringes a...
MHT CET 2023 12th May Evening Shift
One of the slits in Young's double slit experiment is covered with a transparent sheet of thickness $$2.9 \times 10^{-3} \mathrm{~cm}$$. The central f...
MHT CET 2023 12th May Morning Shift
In Young's double slit experiment the intensities at two points, for the path difference $$\frac{\lambda}{4}$$ and $$\frac{\lambda}{3}$$ ($$\lambda=$$...
MHT CET 2023 12th May Morning Shift
In two separate setups for Biprism experiment using same wavelength, fringes of equal width are obtained. If ratio of slit separation is $$2: 3$$ then...
MHT CET 2023 12th May Morning Shift
A beam of light is incident on a glass plate at an angle of $$60^{\circ}$$. The reflected ray is polarized. If angle of incidence is $$45^{\circ}$$ th...
MHT CET 2023 11th May Evening Shift
A beam of light of wavelength $$600 \mathrm{~nm}$$ from a distant source falls on a single slit $$1 \mathrm{~mm}$$ wide and the resulting diffraction ...
MHT CET 2023 11th May Evening Shift
In Young's double slit experiment, the fifth maximum with wavelength '$$\lambda_1$$' is at a distance '$$y_1$$' and the same maximum with wavelength '...
MHT CET 2023 11th May Evening Shift
In Young's double slit experiment, green light is incident on two slits. The interference pattern is observed on a screen. Which one of the following ...
MHT CET 2023 11th May Morning Shift
A double slit experiment is immersed in water of refractive index 1.33. The slit separation is $$1 \mathrm{~mm}$$, distance between slit and screen is...
MHT CET 2023 11th May Morning Shift
In the experiment of diffraction due to a single slit, if the slit width is decreased, the width of the central maximum
MHT CET 2023 11th May Morning Shift
In biprism experiment, if $$5^{\text {th }}$$ bright band with wavelength $$\lambda_1^{\prime}$$ coincides with $$6^{\text {th }}$$ dark band with wav...
MHT CET 2023 10th May Evening Shift
In Young's double slit experiment, the two slits are 'd' distance apart. Interference pattern is observed on a screen at a distance 'D' from the slits...
MHT CET 2023 10th May Evening Shift
A parallel beam of monochromatic light falls normally on a single narrow slit. The angular width of the central maximum in the resulting diffraction p...
MHT CET 2023 10th May Evening Shift
Light waves from two coherent sources arrive at two points on a screen with path difference of zero and $$\frac{\lambda^{\prime}}{2}$$. The ratio of i...
MHT CET 2023 10th May Morning Shift
A person is observing a bacteria through a compound microscope. For better observation and to improve its resolving power he should
MHT CET 2023 10th May Morning Shift
In Young's double slit experiment the separation between the slits is doubled without changing other setting of the experiment to obtain same fringe w...
MHT CET 2023 10th May Morning Shift
Two sources of light $$0.6 \mathrm{~mm}$$ apart and screen is placed at a distance of $$1.2 \mathrm{~m}$$ from them. A light of wavelength $$6000\,\ma...
MHT CET 2023 9th May Evening Shift
Light of wavelength ',$$\lambda$$' is incident on a slit of width '$$\mathrm{d}$$'. The resulting diffraction pattern is observed on a screen at a dis...
MHT CET 2023 9th May Evening Shift
In Young's double slit experiment, the wavelength of light used is '$$\lambda$$'. The intensity at a point is '$$\mathrm{I}$$' where path difference i...
MHT CET 2023 9th May Evening Shift
In Young's double slit experiment, the fringe width is $$2 \mathrm{~mm}$$. The separation between the $$13^{\text {th }}$$ bright fringe and the $$4^{...
MHT CET 2023 9th May Morning Shift
A beam of unpolarized light passes through a tourmaline crystal A and then it passes through a second tourmaline crystal B oriented so that its princi...
MHT CET 2023 9th May Morning Shift
In a diffraction pattern due to single slit of width '$$a$$', the first minimum is observed at an angle of $$30^{\circ}$$ when the light of wavelength...
MHT CET 2023 9th May Morning Shift
In a single slit experiment, the width of the slit is doubled. Which one of the following statements is correct?
MHT CET 2023 9th May Morning Shift
The rays of different colours fail to converge at a point after passing through a thick converging lens. This defect is called
MHT CET 2022 11th August Evening Shift
A parallel beam of monochromatic light falls normally on a single narrow slit. The angular width of the central maximum in the resulting diffraction p...
MHT CET 2022 11th August Evening Shift
In a Fraunhofer diffraction at a single slit of width 'd' and incident light of wavelength $$5500 \mathop A\limits^o$$, the first minimum is observed ...
MHT CET 2021 24th September Evening Shift
Two monochromatic beams of intensities I and 4 I respectively are superposed to form a steady interference pattern. The maximum and minimum intensitie...
MHT CET 2021 24th September Evening Shift
The path difference between two interfering light waves meeting at a point on the screen is $$\left(\frac{57}{2}\right) \lambda$$. The bond obtained a...
MHT CET 2021 24th September Morning Shift
In Young's double slit experiment, in an interference pattern, a minimum is observed exactly in front of one slit. The distance between the two cohere...
MHT CET 2021 24th September Morning Shift
A beam of light having wavelength $$5400 \mathrm{~A}$$ from a distant source falls on a single slit $$0.96 \mathrm{~mm}$$ wide and the resultant diffr...
MHT CET 2021 24th September Morning Shift
Two beams of light having intensities I and 4I interfere to produce a fringe pattern on a screen. The phase difference between the beams is $$\pi / 2$...
MHT CET 2021 23rd September Evening Shift
In Young's double slit experiment, the intensity at a point where path difference is $$\frac{\lambda}{6}$$ ($$\lambda$$ being the wavelength of light ...
MHT CET 2021 23rd September Evening Shift
In Young's double slit experiment, the distance of $$\mathrm{n}^{\text {th }}$$ dark band from the central bright band in terms of bandwidth '$$\beta$...
MHT CET 2021 23rd September Evening Shift
In biprism experiment, $$6^{\text {th }}$$ bright band with wavelength '$$\lambda_1$$' coincides with $$7^{\text {th }}$$ dark band with wavelength '$...
MHT CET 2021 23th September Morning Shift
In Young's experiment with a monochromatic source and two slits, one of the slits is covered with black opaque paper, the fringes will
MHT CET 2021 23th September Morning Shift
In the interference experiment using a biprism, the distance of the slits from the screen is increased by $$25 \%$$ and the separation between the sli...
MHT CET 2021 23th September Morning Shift
In biprims experiment, the $$4^{\text {th }}$$ dark band is formed opposite to one of the slits. The wavelength of light used is $$(\mathrm{d}=$$ dist...
MHT CET 2021 22th September Evening Shift
In Young's double slit experiment using monochromatic light of wavelength '$$\lambda$$', the maximum intensity of light at a point on the screen is $$...
MHT CET 2021 22th September Evening Shift
If two sources emit light waves of different amplitudes then
MHT CET 2021 22th September Morning Shift
In Young's double slit experiment, the $$10^{\text {th }}$$ maximum of wavelength '$$\lambda_1$$' is at a distance of '$$Y_1$$' from the central maxim...
MHT CET 2021 22th September Morning Shift
A single slit diffraction pattern is formed with white light. For what wavelength of light the $$3^{\text {rd }}$$ secondary maximum in diffraction pa...
MHT CET 2021 22th September Morning Shift
The width of central maximum of a diffraction pattern on a single slit does not depend upon
MHT CET 2021 21th September Evening Shift
Two coherent sources of wavelength '$$\lambda$$' produce steady interference pattern. The path difference corresponding to 10$$^{th}$$ order maximum w...
MHT CET 2021 21th September Evening Shift
In Young's experiment, fringes are obtained on a screen placed at a distance $$75 \mathrm{~cm}$$ from the slits. When the separation between two narro...
MHT CET 2021 21th September Evening Shift
Two coherent sources 'P' and 'Q' produce interference at point 'A' on the screen, where there is a dark band which is formed between 4th and 5th brigh...
MHT CET 2021 21th September Morning Shift
In diffraction experiment, from a single slit, the angular width of central maximum does NOT depend upon
MHT CET 2021 21th September Morning Shift
In biprism experiment, 21 fringes are observed in a given region using light of wavelength 4800 $$\mathop A\limits^o $$. If light of wavelength 5600 $...
MHT CET 2021 21th September Morning Shift
A double slit experiment is immersed in water of refractive index 1.33. The slit separationis 1 $$\mathrm{mm}$$ and the distance between slit and scre...
MHT CET 2021 20th September Evening Shift
In a single slit diffraction pattern, the distance between the first minimum on the left and the first minimum on the right is $$5 \mathrm{~mm}$$. The...
MHT CET 2021 20th September Evening Shift
In Young's double slit experiment, with a source of light having wavelength $$6300 \mathop A\limits^o$$, the first maxima will occur when the
MHT CET 2021 20th September Evening Shift
In Young's double slit experiment, the intensity at a point where the path difference is $$\frac{\lambda}{4}$$ [ $$\lambda$$ is wavelength of light us...
MHT CET 2021 20th September Morning Shift
In Young's double slit experiment, the '$$\mathrm{n^{th}}$$' maximum of wavelength '$$\lambda_1$$' is at a distance '$$\mathrm{y_1}$$' from the centra...
MHT CET 2021 20th September Morning Shift
Light of wavelength '$$\lambda$$' is incident on a single slit of width 'a' and the distance between slit and screen is 'D'. In diffraction pattern, i...
MHT CET 2021 20th September Morning Shift
In Fraunhofer diffraction pattern, slit width is 0.2 mm and screen is at 2m away from the lens. If wavelength of light used is 5000$$\mathop A\limits^...
MHT CET 2020 19th October Evening Shift
A graph is plotted between the fringe-width Z and the distance D between the slit and eye-piece, keeping other adjustment same. The correct graph is (...
MHT CET 2020 19th October Evening Shift
The Brewster's angle for the glass-air interface is $(54.74)^{\circ}$. If a ray of light passing from air to glass strickes at an angle of incidence $...
MHT CET 2020 16th October Evening Shift
A light wave of wavelength $$\lambda$$ is incident on a slit of width $$d$$. The resulting diffraction pattern is observed on a screen at a distance $...
MHT CET 2020 16th October Evening Shift
When wavelength of light used in optical instruments A and B are 4500$$\mathop A\limits^o $$ and 6000$$\mathop A\limits^o $$ respectively, the ratio o...
MHT CET 2020 16th October Morning Shift
In diffraction experiment, from a single slit, the angular width of the central maxima does not depend upon
MHT CET 2020 16th October Morning Shift
In Young's double slit experiment green light is incident on the two slits. The interference pattern is observed on a screen. Which one of the followi...
MHT CET 2020 16th October Morning Shift
When a photon enters glass from air, which one of the following quantity does not change?
MHT CET 2019 3rd May Morning Shift
In Young's double slit experiment fifth dark fringe is formed opposite to one of the slit. IID is the distance between the slits and the screen and $d...
MHT CET 2019 3rd May Morning Shift
The phenomenon of interference is based on
MHT CET 2019 2nd May Evening Shift
Light of wavelength ' $\lambda$ ' is incident on a single slit of width ' $a$ ' and the distance between slit and screen is ' $D$ '. In diffraction pa...
MHT CET 2019 2nd May Evening Shift
The luminous border that surrounds the profile of a mountain just before sun rises behind it, is an example of
MHT CET 2019 2nd May Morning Shift
In biprism experiment, the distance between source and eyepiece is 1.2 m, the distance between two virtual sources is 0.84 mm. Then the wavelength of ...
MHT CET 2019 2nd May Morning Shift
If a star emitting yellow light is accelerated towards earth, then to an observer on earth it will appear
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