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Chapter 4: Problem 4

Periscope works on the principle of ________ of light.

Short Answer

Expert verified
Answer: Reflection of light.

Step by step solution

01

Understanding the Periscope

A periscope is an optical instrument used to observe objects from a hidden position, often found in submarines. It consists of two mirrors or prisms placed parallel to each other, facing in opposite directions. Light from an object enters through the top mirror or prism, reflects off its surface, travels down the periscope, and then reflects off the bottom mirror or prism, finally allowing the viewer to see the object.
02

Identifying the Property of Light

To understand the principle on which a periscope works, think about how the light interacts with the mirrors or prisms inside the periscope. The light from the object reflects off the mirrors or prisms before reaching the viewer's eyes. This reflection of light is the primary mechanism that allows the periscope to function.
03

Formulating the Answer

After identifying that reflection is the main interaction between light and the periscope, you can now conclude that the periscope works on the principle of "Reflection" of light.

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Most popular questions from this chapter

Describe the working of a "kaleidoscope" and a "periscope".

Which of the following is (are) natural source(s) of light? (1) Planets (2) Glow worm (3) Stars (4) Both (2) and (3)

How can laws of reflection be experimentally verified?

What is a solar eclipse?

Write the following steps in sequential order to verify the laws of reflection. (a) Draw a normal at the point where the two lines \(\mathrm{PQ}\) and \(\mathrm{P}_{1} \mathrm{Q}_{1}\) meet. (b) Remove the pins and the mirror and join \(\mathrm{P}, \mathrm{Q}\) similarly join \(\mathrm{P}_{1}, \mathrm{Q}_{1}\). (c) View the image of \(\mathrm{P}\) and \(\mathrm{Q}\) and fix two more pins \(\mathrm{P}_{1}\) and \(\mathrm{Q}_{1}\) such that the images of pins \(\mathrm{P}, \mathrm{Q}\) and \(\mathrm{P}_{1}, \mathrm{Q}_{1}\) are along the same line. (d) Draw a straight line on a white paper spread on the table and fix a plane mirror on the line. (e) Fix two pins \(\mathrm{P}\) and \(\mathrm{Q}\) in front of the mirror. (f) Measure the angle of incidence and angle of reflection and compare them to verify the law reflection. (1) dabecf (2) acdbfe (3) decbaf (4) dbacef
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