Question

Periscope works on the principle of

Answer 1

Periscope

1. A periscope is an optical equipment that reflects pictures via a tube using a prism, lens, or mirror system.
2. The light reflects in the viewer's eye after hitting another mirror at the bottom of the periscope. As a result, the periscope operates on the basis of absolute internal reflection.
3. A periscope is based on the laws of reflection, which state that light from an object strikes a mirror at a ${45}^o$ angle from its surface and is reflected. The reflected light then lands on another mirror, where it is reflected once more before entering the human eye.
4. Periscopes work on the principle of light reflection (multiple reflections from plane mirrors).

Hence, a periscope works on the principle of the multiple reflections of light.