Gamma Question Bank for Engineering Physics>Chapter 25 - Wave Optics>EXERCISE 10.1>Q 3

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In $Y D S E$ , the phase difference between two coherent sources is $\frac{π}{3}$ and constant. The intensity at a point which is at equal distance from the sources is $(I_{0}$ is maximum intensity $)$

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Important Questions on Wave Optics

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Gamma Question Bank for Engineering Physics>Chapter 25 - Wave Optics>EXERCISE 10.1>Q 4

Young's double slit experiment is made in a liquid. The tenth bright fringe in liquid lies in screen where

6^{th}

dark fringe lies in vacuum. The refractive index of the liquid is approximately

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Gamma Question Bank for Engineering Physics>Chapter 25 - Wave Optics>EXERCISE 10.1>Q 5

In Young's double slit experiment the intensity of light at a point on the screen where path difference is

λ

is

I

. If intensity at another point is

\frac{I}{4}

, then possible path differences at this point are

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Gamma Question Bank for Engineering Physics>Chapter 25 - Wave Optics>EXERCISE 10.1>Q 6

Four waves are represented as
$y_{1} = 20 \sin (40 π t)$

$y_{2} = 30 \sin (40 π t)$

$y_{3} = 30 \cos (20 π t)$

$y_{4} = 30 \sin (10 π t)$ Which of the waves can produce interference?

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Gamma Question Bank for Engineering Physics>Chapter 25 - Wave Optics>EXERCISE 10.1>Q 7

The light waves having displacements

y_{1} = 10 \sin (ω t - k x)

and

y_{2} = 5 \sin (ω t - k x + ϕ)

interfere. The ratio of maximum to the minimum intensity of light in the interference pattern is

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Gamma Question Bank for Engineering Physics>Chapter 25 - Wave Optics>EXERCISE 10.2>Q 12

The colour shown by a thin oil film on water in sunlight is due to

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Gamma Question Bank for Engineering Physics>Chapter 25 - Wave Optics>EXERCISE 10.2>Q 13

Light enters in a glass slab of refractive index

\frac{3}{2}

and covers a distance

20 cm

. The optical path of it is

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Gamma Question Bank for Engineering Physics>Chapter 25 - Wave Optics>Assignment Set-2>Q 1

By corpuscular theory of light, the phenomenon which can be explained is

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Gamma Question Bank for Engineering Physics>Chapter 25 - Wave Optics>Assignment Set-2>Q 2

The idea of secondary wavelets for the propagation of light wave was first given by