Home
Class 12
PHYSICS
A 0.6 xx 10^(-3) W laser is aimed at the...

A `0.6 xx 10^(-3) W` laser is aimed at the Moon. The wavelength of emitted light is 600 nm and the laser beam spreads out of the source at a divergence angle of `theta = 0.5 xx 10^(-3) rad`. The Earth-Moon distance is nearly `4 xx 108 m`. Calculate the maximum number of photons arriving per second per square meter on the Moon? Neglect any absorption by the atmosphere.

Promotional Banner

Similar Questions

Explore conceptually related problems

A monochromatic light source of frequency 6xx10^(14)Hz is emitting energy at the rate 2xx10^(-3)J//s . Calculate the number of photons emitted per seconds by source.

A monochromatic source of light emits photons of frequency 6 xx 10^(14 )Hz . The power emitted by the source is 8 x 10^(-3)W. Calculate the number of photons emitted per second. (Take h = 6.63 xx 10^(-34) Js )

Photons of wavelength 600 nm are emitted from a 60 watt lamp. What is the number of photons emitted per second ? Take h = 6.6 xx 10^-34 Js

A laser emits a pulse of light with energy 5.0 xx 10^(3)J . Determine the number of photons in the pulse if the wavelength of light is 480 nm.

Nitrogen laser produces a radiation at a wavelength of 337.1nm . If the number of photons emitted is 5.6 xx 10^(24) . Calculate the energy of this laser

Nitrogen laser produces a radiation at a wavelength of 337.1 nm. If the number of photons emitted is 5.6 xx 10^24 , Calculate the power of this laser.