Question

n a vessel of depth H, upto what height a liquid of refractive index should be filled so that now it appears to be half filled if viewed from top?

Answer 1

Explanation:

Also, the apparent depth would be the same level 'x' cm. How is refractive index defined? Hence, It is thus clear that the container should be filled upto 21 - 9 = 12 cm height, so that the container appears to be half filled.

Answer 2

Answer:

Also, the apparent depth would be the same level 'x' cm. How is refractive index defined? Hence, It is thus clear that the container should be filled upto 21 - 9 = 12 cm height, so that the container appears to be half filled.