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MCQ (Single Correct Answer)

NEET 2024 (Re-Examination)
Two slits in Young's double slit experiment are $$1.5 \mathrm{~mm}$$ apart and the screen is placed at a distance of $$1 \mathrm{~m}$$ from the slits....
NEET 2024 (Re-Examination)
Interference pattern can be observed due to superposition of the following waves: A. $$y=a \sin \omega t$$ B. $$y=a \sin 2 \omega t$$ C. $$y=a \sin (\...
NEET 2024 (Re-Examination)
A beam of unpolarized light of intensity I0 is passed through a polaroid A, then through another polaroid B, oriented at $$60^\circ$$ and finally thro...
NEET 2024
If the monochromatic source in Young's double slit experiment is replaced by white light, then
NEET 2024
An unpolarised light beam strikes a glass surface at Brewster's angle. Then
NEET 2023 Manipur
Which set of colours will come out in air for a situation shown in figure?...
NEET 2023
For Young's double slit experiment, two statements are given below : Statement I : If screen is moved away from the plane of slits, angular separation...
NEET 2022 Phase 2
If the screen is moved away from the plane of the slits in a Young's double slit experiment, then the :
NEET 2022 Phase 2
After passing through a polariser a linearly polarised light of intensity I is incident on an analyser making an angle of 30$$^\circ$$ with that of th...
NEET 2022 Phase 1
In a Young's double slit experiment, a student observes 8 fringes in a certain segment of screen when a monochromatic light of 600 nm wavelength is us...
NEET 2020 Phase 1
Assume that light of wavelength 600 nm is coming from a star. The limit of resolution of telescope whose objective has a diameter of 2 m is :
NEET 2020 Phase 1
In Young's double slit experiment, if the separation between coherent sources is halved and the distance of the screen from the coherent sources is d...
NEET 2019
In a double slit experiment, when light of wavelength 400 nm was used, the angular width of the first minima formed on a screen placed 1m away, was fo...
NEET 2018
In Young’s double slit experiment the separation d between the slits is 2 mm, the wavelength $$\lambda $$ of the light used is 5896 $$\mathop A\limits...
NEET 2018
Unpolarised light is incident from air on a plane surface of a material of refractive index $$\mu $$. At a particular angle of incidence i, it is foun...
NEET 2017
Young's double slit experiment is first performed in air and then in a medium other than air. It is found that 8th bright fringe in the medium lies wh...
NEET 2017
The ratio of resolving powers of an optical microscope for two wavelength $$\lambda $$1 = 4000 $$\mathop A\limits^ \circ $$ and $${\lambda _2}$$ = 60...
NEET 2017
Two polaroids P1 and P2 are placed with their axis perpendicular to each other. Unpolarised light $$I$$0 is incident on P1. A third polaroid P3 is kep...
NEET 2016 Phase 2
The interference pattern is obtained with two coherent light sources of intensity ratio n. In the interference pattern, the ratio $${{{I_{max}} - {I_...
NEET 2016 Phase 2
A linear aperture whose width is 0.02 cm is placed immediately in front of a lens of focal length 60 cm. The aparture is illuminated normally by a par...
NEET 2016 Phase 1
In a diffraction pattern due to a single slit of width $$a$$, the first minimum is observed at an angle 30o when light of wavelength 5000 $$\mathop A...
NEET 2016 Phase 1
The intensity at the maximum in a Young's double slit experiment is $$I$$0. Distance between two slits is d = 5$$\lambda $$, where $$\lambda $$ is the...
AIPMT 2015
At the first minimum adjacent to the central maximum of a single-slit diffraction pattern, the phase difference between the Huygen's wavelet from the ...
AIPMT 2015
Two slits in Young's experiment have widths in the ratio 1 : 25. The ratio of intensity at the maxima and minima in the interference pattern, $${{{I_...
AIPMT 2015 Cancelled Paper
For a parallel beam of monochromatic light of wavelength '$$\lambda $$' , diffraction is produced by a single slit whose width 'a' is of the order of ...
AIPMT 2015 Cancelled Paper
In a double slit experiment, the two slits are 1 mm apart and the screen is placed 1 m away. A monochromatic light of wavelength 500 nm is used. What ...
AIPMT 2014
A beam of light of $$\lambda = 600$$ nm from a distant source falls on a single slit 1 mm wide and the resulting diffraction pattern is observed on a...
AIPMT 2014
In the Young's double slit experiment, the intensity of light at a point on the screen where the path difference $$\lambda $$ is K, ($$\lambda $$ bein...
NEET 2013 (Karnataka)
In Young's double slit experiment the distance between the slits and the screen is doubled. The separation between the slits is reduced to half. As a ...
NEET 2013 (Karnataka)
A parallel beam of light of wavelength $$\lambda $$ is incident normally on a narrow slit. A diffraction pattern formed on a screen placed perpenficul...
NEET 2013 (Karnataka)
The reddish appearance of the sun at sunrise and sunset is due to
NEET 2013
In Young's double slit experiment, the slits are 2 mm apart and are illuminated by photons of two wavelengths $${\lambda _1}$$ = 12000 $$\mathop A\lim...
AIPMT 2007
The frequency of a light wave in a material is 2 $$ \times $$ 1014 Hz and wavelength is 5000 $$\mathop A\limits^ \circ $$. The refractive index of ma...
AIPMT 2005
The angular resolution of a 10 cm diameter telescope at a wavelength of 5000 $$\mathop A\limits^ \circ $$ is of the order of
AIPMT 2004
A telescope has an objective lens of 10 cm diameter and is situated at a distance of one kilometer from two objects. The minimum distance between thes...
AIPMT 2001
A ray of light travelling in air have wavelength $$\lambda $$, frequency n, velocity v and intensity $$I$$. If this ray enters into water then these p...
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