Question

obtain the relation between real depth and apparent depth of tank / pond.​

Answer 1

Explanation:

Real Depth is actual distance of an object beneath the surface, as would be measured by submerging a perfect ruler along with it. Apparent depth in a medium is the depth of an object in a denser medium as seen from the rarer medium. Its value is smaller than the real depth.

Answer 2

The apparent depth is the distance of the virtual image, I from the surface of the water. The real depth is the distance of the real object, O from the surface of the wate, as would be measured by submerging a perfect ruler along with it. Apparent depth in a medium is the depth of an object in a denser medium as seen from the rarer medium. Its value is smaller than the real depth