Question

A person standing on the land beside a river looks at a fish inside the water. The depth of the fish inside the water will appear ______________ to the person.
(Note that you are almost vertically above the fish)

• A. closer than its actual depth
• B. farther than its actual depth
• C. same as its actual depth
• D. exactly double of its actual depth

Answer 1

The correct option is A closer than its actual depth

The image and object distance of the fish are related as:
$\frac{{\mu }_w}{v}=\frac{{\mu }_a}{u}$
$v=u\frac{{\mu }_a}{{\mu }_w}$
Refractive index of water is more than air.
${\mu }_w>{\mu }_a$

$⟹v<u$

Image distance is smaller than the object distance. So, it appears closer.