MEDIUM
JEE Main/Advance
IMPORTANT
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A monochromatic light source S, is placed between a mirror and a screen as shown in the figure below,

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Important Questions on Wave Optics

HARD
JEE Main/Advance
IMPORTANT
A liquid of refractive index μ is poured on a glass μg=1.5 slab to form a thin layer of thickness t=2.5λ. A monochromatic light beam of wavelength λ is incident at small angle with normal. For normal viewing of reflected light. Which of the following is/are not correct?
MEDIUM
JEE Main/Advance
IMPORTANT

In YDSE set up one of the slit S1 of a double slit system is wider than the other, so that the amplitude of light reaching the central part of the screen from one slit acting alone is twice that from the other slit acting alone. If d=4λ, maximum value of sinθ so that intensity at point P is equal to average intensity on screen
is N16. Find the value of N.

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EASY
JEE Main/Advance
IMPORTANT
In Young's double slit experiment, when light of wavelength 4000 A is used 90 fringes are seen on the screen. When light of 18000 Å is used, the number of fringes seen is
EASY
JEE Main/Advance
IMPORTANT

Two coherent point sources of wavelength λ are placed at A and B on x-axis. The number of minima on x-axis is

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