Question

4. Light of frequency 4.0 x 10¹4 hertz has a wavelength of

3.0 x 107 meter while traveling in a certain material. What
is the speed of the light in this material?

Answer 1

F = 4.0×10^14 hertz

wavelength= 3.0*10^7 m

Recall:

V=FS(frequency× distance).

therefore V= 4.0*10^14 ×3.0*10^7

V= 1.2*10^21 m/s