Periscope is built using the concept of

see full answer

Your Exam Success, Personally Taken Care Of

1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.

An Intiative by Sri Chaitanya

Refraction

Reflection

Polarization

Dispersion

answer is B.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Detailed Solution

Concept: It is referred to as light reflection when a light ray hits a polished, smooth surface and bounces back. The incident light rays hit the surface and are reflected off of it. The beam that returns is referred to as the reflected ray.
Periscope is a tool used for viewing around or through a barrier that blocks the view of a straight line of sight in the viewer's area.
Question Image

The simplest type of periscope has an outer casing and two mirrors at each end, parallel to each other at a 45 ° angle. Light from one end enters the periscope, then is reflected by the first mirror, then by the second mirror, and finally exits the periscope and becomes the observer's eye.
Therefore, the principle of operation of a periscope is the reflection of light by the two mirrors.
Hence, the correct option is 2.

Watch 3-min video & get full concept clarity