Question

The speed of light in air and glass is 3 x 108
m/s, and 2 x 108 m/s respectively. A beam of
light falls on a glass at an angle of 30° with the
surface. The angle of refraction in glass is
a) 25° 16' b)35° 16' c) 15° 26' d) 30° 16'​help plzz

Answer 1

Answer:

According to Snell's Law:

sin r

sin i

=

n

1

n

2

=

v

2

v

1

and Refractive Index for air is ≈1

Substituting,

1

1.5

=

v

2

3×10

8

Therefore, v

2

=

1.5

3×10

8

=2×10

8

m/s

Answer By