A photo sensitive surface is receiving light of wavelength 6000 Å at the rate of `10^(-7)`J/s . The number of photons striking the surface per second is approximately equal to

The photosensitive surface is receiving the light of wavelength 5000Å at the rate of 10^(-8)"J s"^(-1) . The number of photons received per second is (h=6.62xx10^(-34)Js, c=3xx10^(8)ms^(-1))

The photosensitive surface is receiving the light of wavelength 5000Å at the rate of 10^(-8)"J s"^(-1) . The number of photons received per second is (h=6.62xx10^(-34)Js, c=3xx10^(8)ms^(-1))

A 100 W point source emits monochromatic light of wavelength 6000 A Calculate the total number of photons emitted by the source per second.

A 100 W point source emits monochromatic light of wavelength 6000 A Calculate the total number of photons emitted by the source per second.

A radio transmitter operates at a frequency of 300 KHz and a power of 10 KW. The number of photons emitted per second is approximately equal to

If mean wavelength of light radiated by 100 W lamp is 5000 Å , then number of photons radiated per second are

A 20 W lamp rated 10% emits light of wavelength y. Calculate the number of photons emitted by the lamp per second.

A monochromatic radiation of wavelength lamda and intensity I is incident on a plate of area A. Find the number of photons striking the plate per second.