A periscope works on principle of

refraction of light

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reflection of light

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scattering

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dispersion

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Solution

The correct option is B
reflection of light

A periscope works by using two mirrors to bounce light from one place to another. A typical periscope uses two mirrors placed at 45 degree angle to the direction in which one desires to see. The light bounces from one to the other and then reaches to our eye.

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Similar questions

Q. Question 5
Which of the following phenomena of light are involved in the formation of a rainbow?

(a) Reflection, refraction and dispersion
(b) Refraction, dispersion and total internal reflection
(c) Refraction, dispersion and internal reflection
(d) Dispersion, scattering and total internal reflection

Q. A periscope works on the principle of rectilinear propagation of light.

A periscope works on the principle of reflection.

Question 6
Twinkling of stars is due to atmospheric

(a) dispersion of light by water droplets
(b) refraction of light by different layers of varying refractive indices
(c) scattering of light by dust particles
(d) internal reflection of light by clouds

Q. The blue colour of sky is due to:
(a) refraction of light
(b) dispersion of light
(c) diffraction of light
(d) scattering of light

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