Question

the two spreed of light on glasss in 2× 10 ^5 what is the ri of glass​

Answer 1

Answer:

The speed of light in air is c = 3 × 108 m/s.

Thus, the speed of light in glass will be given as.

v = c/n = 3 × 108/ 1.5 = 2 × 108 m/s.

The speed, wavelength and frequency are related as.

c = νλ

Thus, wavelength in air is given as.

λa = c/ν = 3 × 108/ 6 × 1014 = 5 × 10-7 m.

Answer 2

Explanation:

Refractive index of glass =

speedoflightinglass

speedoflightinvacuum

=

2×10

5

km/s

3×10

8

m/s

=

2×10

8

m/s

3×10

8

m/s

=1.5