Question

18. The speed of light is 3.0 x 10^8m/s. If the frequency is 7.0 x 10^14Hz, find the wavelength.

Answer 1

`\lambda=(v)/(f)=(3*10^8)/(7.0*10^(14))=4.3*10^(-7)m`

here v is the spped of light

f is the frequency of light

now substituting we get