Question

A coin is placed at the bottom of a 4m deep pond. At what depth in metre does the coin appear to be as seen from above the pond

Answer 1

Answer:

3m

Step-by-step explanation:

Here,

real depth, h =4m

Refractive Index of water = 4/3

Therefore, Apparent Depth = 4/4/3

= 3m

Answer 2

Answer:

Depth of the Coin appeared to be seen from above the pond is 1 m

Step-by-step explanation:

Actual Depth, dₔ=4m

Refractive index µ=4/3

FORMULA

Apparent depth = (actual depth)/(refractive index)

             =  dₔ/µ

                           = 4/(4⁄3)

Apparent depth = 3m

Depth of the coin appear to be as seen from above the pond is

                             = Actual depth-Apparent depth

        = 4m-3m

        = 1m