Answer:
Explanation:
Given
actual depth of penny [tex]H=1\ m[/tex]
but penny appears 75 cm from the water surface
This is because as the ray travel from denser to rarer medium it bends away from normal so coin appears elevated w.r.t to actual position
Apparent height is given by
[tex]H'=\frac{H}{\mu }[/tex]
Where [tex]\mu [/tex]=Refractive index
H'=apparent height
[tex]\mu =\frac{1}{0.75}[/tex]
[tex]\mu =\frac{4}{3}[/tex]