Question

Calculate the wavelength, frequency and wavenumber of a light wave whose period is 2.0 x 10⁻¹⁰ s.

Answer 1

As we realize that recurrence

= 1/t accordingly

f = 0.5 * 10 ^ 10 additionally speed

= f * wavelength w

= 3 * 10 ^ 8/0.5 * ^ 10 ^ 10 w

= 6 * 10 ^ - 2 and wave number is 1/w 0.16 * 10 ^ 2 is the wave number.

Answer 2

Answer:

(i) The frequency of the light wave is

 period1=2.0×10−10s1=5×109/s.

(ii) The wavelength of light wave is

νc=5×109/s3×108m/s=6.0×10−2m.

(iii) The wave number of light wave is 

νˉ=λ1=6.0×10−21=16.66/m.