Question

from air into glass of
velocity of light in air is 3x10m/s then change
n wavelengths of the waves is
a) 2.5x 10-6m
b) 2.5x 10-7m
-) 7.5x 10-7m
d) 2.7x10m
4
ray of light of frequency 4x105 Hz is refracte
hrough glass of R.I. 1.5. If velocity of light in ai
s 3x108 m/s, the percentage change in th
wavelength from air to glass is
1) 33%
b) 25%
e) 50%
d) no change​

Answer 1

Answer:

from air into glass of velocity of light in air is 3x10m/s then change n wavelengths of the waves is a) 2.5x 10-6m b) 2.5x 10-7m -) 7.5x 10-7m d) 2.7x10m 4 ray of light of frequency 4x105 Hz is refracte hrough glass of R.I. 1.5. If velocity of light in ai s 3x108 m/s, the percentage change in th wavelength from air to glass is 1) 33% b) 25% e) 50% d) no change -