EASY
JEE Main
IMPORTANT
Earn 100

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 __________

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Important Questions on Wave Optics
MEDIUM
JEE Main
IMPORTANT
A beam of electrons of energy E scatters from a target having atomic spacing of . The first maximum intensity occurs at Then is........
(Planck's constant electron mass )

MEDIUM
JEE Main
IMPORTANT
Two coherent sources of sound, and produce sound waves of the same wavelength are in phase. and are placed apart (see fig). A listener, located at , directly in front of , finds that the intensity is at a minimum when he is away from . The listener moves away from , keeping the distance from fixed. The adjacent maximum of intensity is observed when the listener is at a distance from . Then is :

MEDIUM
JEE Main
IMPORTANT
A sound source S is moving along a straight track with speed , and is emitting sound of frequency .An observer is standing at a finite distance, at the point from the track. The time variation of frequency heard by observer is best represented by : (to represents the instant when the distance between the source and observer is minimum)

MEDIUM
JEE Main
IMPORTANT
In the figure below, and are two equally intense coherent sources emitting radiation of wavelength The separation between and is and the phase of is ahead of that of by and C are three distinct point of observation, each equidistant from the midpoint of PQ. The intensities of radiation at will be in the ratio :

MEDIUM
JEE Main
IMPORTANT
A Young's double-slit experiment is performed using monochromatic light of wavelength . The intensity of light at a point on the screen, where the path difference is , is units. The intensity of light at a point where the path difference is is given by , where is an integer. The value of is

HARD
JEE Main
IMPORTANT
A polarizer - analyser set is adjusted such that the intensity of light coming out of the analyser is just of the original intensity. Assuming that the polarizer - analyser set does not absorb any light, the angle by which the analyser needs to be rotated further, to reduce the output intensity to zero, is

HARD
JEE Main
IMPORTANT
Visible light of wavelength falls normally on a single slit and produces a diffraction pattern. It is found that the second diffraction minimum is at from the central maximum. If the first minimum is produced at then is close to

HARD
JEE Main
IMPORTANT
In a Young’s double slit experiment, the separation between the slits is . In the experiment, a source of light of wavelength is used and the interference pattern is observed on a screen kept away. The separation between the successive bright fringes on the screen is:
