Plzzzzz ans this

Asked by  | 27th May, 2009, 02:57: PM

Expert Answer:

wavelength = 600 nm, c = 3 x 108 m / s

n = 1.5

c = frequency x wavelength

frequency in air = 3 x 108/ 6 x 10-7 = 5 x 1014 Hz

n = c / v

speed (v) in glass = 2 x 108 m / s

frequency remains same = 5 x 1014 Hz

since v = frequency x wavelength

wavelength = 2 x 108 / 5 x 1014 = 0.4 x 10-6 = 0.4 micro meter 

Answered by  | 27th May, 2009, 04:44: PM

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