EASY
JEE Main
IMPORTANT
Earn 100
Consider the diffraction pattern obtained from the sunlight incident on a pinhole of diameter If the diameter of the pinhole is slightly increased, it will affect the diffraction pattern such that
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Important Questions on Wave Optics
EASY
JEE Main
IMPORTANT
Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : An electron microscope can achieve better resolving power than an optical microscope.
Reason R : The de Broglie's wavelength of the electrons emitted from an electron gun is much less than wavelength of visible light.
In the light of the above statements, choose the correct answer from the options given below:
EASY
JEE Main
IMPORTANT
In a Young's double slit experiment two slits are separated by and the screen is placed one meter away. When a light of wavelength is used, the fringe separation will be :
MEDIUM
JEE Main
IMPORTANT
Interference fringes are observed on a screen by illuminating two thin slits apart with a light source . The distance between the screen and the slits is . If a bright fringe is observed on a screen at distance of from the central bright fringe, then the path difference between the waves, which are reaching this point from the slits is close to :
MEDIUM
JEE Main
IMPORTANT
In a Young's double slit experiment, fringes are observed in a certain segment of the screen when light of wavelength is used. If the wavelength of light is changed to , the number of fringes observed in the same segment of the screen would be :
EASY
JEE Main
IMPORTANT
In a Young's double slit experiment, light of is used to produce and interference pattern. When the distance between the slits is the angular width (in degree) of the fringes formed on the distance screen is close to :
EASY
JEE Main
IMPORTANT
Two light waves having the same wavelength in vacuum are in phase initially. Then the first wave travels a path through a medium of refractive index while the second wave travels a path of length through a medium of refractive index . After this the phase difference between the two waves is:
MEDIUM
JEE Main
IMPORTANT
A beam of plane polarized light of large cross-sectional area and uniform intensity of falls normally on a polarizer (cross-sectional area ), which rotates about its axis with an angular speed of . The energy of light passing through the polarizer per revolution, is close to:
EASY
JEE Main
IMPORTANT
Orange light of wavelength illuminates a single slit of width . The maximum possible number of diffraction minima produced on both sides of the central maximum is __________
