A pond appears to be 2.7 {\m} deep. If the refractive index of water is \frac{4}{3}, find the actual depth of the pond.

ICSE Class 10 Physics 2020 Solved Paper - Question 14

Question : 14 of 67

Marks: +1, -0

A pond appears to be

2.7 {\m}

deep. If the refractive index of water is

\;{4}/{3}

, find the actual depth of the pond.

Solution:

Given : Apparent depth

=2.7 {\m},{ }_{ {\a}} µ_{ {\w}}=\;{4}/{3}

Actual depth

=

?
We know,

\;\;\text " We know, "\;\;{ }_{ {\a}} µ_{ {\w}}\;=\;{\;\text " Actual depth "\;}/{\;\text " Apparent depth "\;}

\; ∴ \;\;{4}/{3}\;=\;{\;\text " Actual depth "\;}/{2.7 {\m}}

∴ \;\;

Actual depth

=\;{4}/{3} × 2.7 {\m}

=3.6 {\m}

Go to Question:

Prev Question

Next Question