A laser operates at a frequency of `3xx10^(14)` Hz and has an aperture of `10^(-2)` m. What will be the angular spread ?

A laser operates at a frequency of 5 xx 10^(14) Hz . If the laser has an aperture of 10 mm, what will be the angular spread?

A light wave has a frequency of 4.8 xx 10^(14) Hz in a medium of R.I. 1.5 is

A light wave has a frequency of 4xx10^(14)Hz and a wavelength of 5xx10^(-7) meters in a medium. The refractive index of the medium is

A light wave has a frequency of 4xx10^(14)Hz and a wavelength of 5xx10^(-7) meters in a medium. The refractive index of the medium is

The effective mass of photon of frequency 5xx10^(14) Hz is

What is the refractive index of a medium , if a light wave of frequency 5 xx 10^(14) Hz has a wavelength of 4 xx 10^(-7) m in the medium ?

A laser beam has a wavelength of 7 xx 10^(-7) m and aperure 10^(-2)m . The beam is sent to moon at a distance of 4 xx 10^(5) km from earth. Find the angular spread and areal spread of the beam on reaching the moon.