What is the path difference of destructive interference?

Important Questions on Interference and Diffraction of Light

EASY

JEE Advanced

IMPORTANT

Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 8 - Interference and Diffraction of Light>Objective Problems [Level 1]>Q 8

Which of the following is not an essential condition for interference?

EASY

JEE Advanced

IMPORTANT

Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 8 - Interference and Diffraction of Light>Objective Problems [Level 1]>Q 9

Interference proves,

EASY

JEE Advanced

IMPORTANT

Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 8 - Interference and Diffraction of Light>Objective Problems [Level 1]>Q 10

When interference of light takes place,

MEDIUM

JEE Advanced

IMPORTANT

Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 8 - Interference and Diffraction of Light>Objective Problems [Level 1]>Q 11

Two waves of intensities $I$ and $4I$ superpose. Then, the maximum and minimum intensities produced are,

MEDIUM

JEE Advanced

IMPORTANT

Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 8 - Interference and Diffraction of Light>Objective Problems [Level 1]>Q 12

Two sources of sound of the same frequency produce sound intensities $I$ and $4I$ at a point $P$ when used individually. If they are used together such that the sounds from them reach $P$ with a phase difference of $\frac{2\pi }{3}$, the intensity at $P$ will be,

MEDIUM

JEE Advanced

IMPORTANT

Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 8 - Interference and Diffraction of Light>Objective Problems [Level 1]>Q 13

What is the minimum thickness of a soap film needed for constructive interference in reflected light if the light incident on the film is $750 \mathrm{nm}$? Assume that the index for the film is, $\mu =1.33$.

MEDIUM

JEE Advanced

IMPORTANT

Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 8 - Interference and Diffraction of Light>Objective Problems [Level 1]>Q 14

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 $\frac{\pi }{2}$ at point $A$ and $\pi$ at point $B$. Then, the difference between the resultant intensities at $A$ and $B$ is,

EASY

JEE Advanced

IMPORTANT

Complete Study Pack for Engineering Entrances Objective Physics Vol 2>Chapter 8 - Interference and Diffraction of Light>Objective Problems [Level 1]>Q 15

Two waves of same frequency and same amplitude from two monochromatic sources are allowed to superpose at a certain point. If in one case the phase difference is $0$ and in other case, it is $\frac{\mathrm{\pi }}{2},$ then the ratio of the intensities in the two cases will be