Question

Given values: h = 6.626x10-34 J*s, N = 6.022x1023, c=3.000x108 m/s 1) The wavelength of light that has a frequency of 1.66 × 109s -1 is __________ m.

A) 0.181

B) 5.53

C) 2.00 x 10-9

D) 5.53 x 108

E) none of the above

Answer 1

The energy of electromagnetic radiation of light is given E = hc/$\lambda$

The relation between wavelength and frequency is given by C = $\lambda$ * $\nu$ where $\nu$ is frequency and $\lambda$ is wavelength and C is the wave length of the light

Therefore, wave length of the light radiation, $\lambda$ = C/$\nu$ = 3*10^8/1.66*10^9 = 0.181 m