A small air bubble in a glass block when seen from above appears to be raised because of:
A small air bubble in a glass block when seen from above appears to be raised because of:

a. Refraction of light

b. Reflection of light

c. Reflection and refraction of light

d. None of the above

Solution:

The correct option is (a).

A spherical air bubble in glass would behave similarly to a diverging lens, in that the object would always remain upright but smaller than it actually was if we peered through it. This is due to light refraction.