Question

Calculate the wave number of radiations having a frequency of 4×10^11 kHz

Answer 1

Answer:

Use v=c/lambda and then use wavelength =1/lambda

Explanation:

Answer 2

Frequency(v)= velocity of light (c)/wavelength

wavelength=velocity/frequency

given frequency is 4x10^14hz

velocity = 3x10^8m/s

so wavelength = 3x10^8/4x10^14

= 0.75x10^-6 m

so wavelength=0.75x10^-6m