Q5 of 18 Page 165

Classify the pairs of media as denser and rarer.

a. Air, water b. Air, glass c. water, glass

a. Air – rarer, Water – denser

b. Air – rarer, Glass – denser


c. Water – rarer, Glass – denser


More from this chapter

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3

Identify the mistakes and correct them:

An optical fibre is a device based on the principle of refraction.

 4

Match the following:

a. Irregular reflection - Glass slab


b. Multiple reflection - Optic fibre


c. Refraction - Periscope


d. Total internal reflection – Wood

 6

Objects present in the dark room are not visible. But when the light is switched on, everything present in the room becomes visible. Why does this happen?

 6

Differentiate between regular and irregular reflection.