Question

If a light wave has a wavelength of 500nm in air, what is the frequency of the wave? A. 3.0 x 10^14Hz B. 6.0 x 10^14Hz C. 6.0 x 10^15Hz D. 2.5 x 10^14Hz [c = 3 x 10^8 m/s]

Answer 1

Answer:

Option b is correct

Explanation:

Given :-

Wavelength = 500 nm

Frequency = f

Speed of sound = 3*10^8 m/s

We know that ,

u = w*f

f = u/w

= 3*10^8/500*10^9

= 6*10 ^14