Question

Q1. A laser produces red light of
frequency 4.7 x 10 14 Hz. The speed
of light in glass is 2.0 x 10 8 m/s.
(a) Calculate the wavelength in glass
of light from this laser.
​

Answer 1

Answer:

frequency, f=4×10

14

Hz

Wavelength, λ=5×10

−7

m

velocity, v=fλ

=4×10

14

×5×10

−7

=20×10

7

v=2×10

8

m/s

Refractive index, μ=

v

c

=

2×10

8

3×10

8

μ=1.5. this type this question made