Question

A ray of light falls upon the surface of water in a
tank, making an angle of 60° with the surface.
Make a diagram showing the path of ray, if the
water is 3 cm deep. Measure the angle of refraction.
4
Refractive index of water is
4
R
3.​

Answer 1

Answer:

Using Snell's law :

μ

1

sin i=μ

2

sin r

1×sin60

∘

=1.5×sin r

r=35

∘

15

′

And V

glass

=

μ

c

=

1.5

3×10

8

m/s

=2×10

8

m/s