[" Find the energy and momentum of a photon of ultraviolet radiation of "280nm" wavele "],[" A small plate of a metal is placed at a distance of "2m" from a monochromatic light,"],[" wavelength "4.8times10^(-7)m" and power "1.0" Watt.The light falls normally on the plate."],[" number of photons striking the metal plate per square metre per second."]

A small plate of a metal is placed at a distance of 2m from a monochromatic light source of wavelenght 4.8xx10^(-7)m and power 1.0 Watt. The light falls normally on the plate. Find the number of photons striking the metal plate per square metre per second.

A small plate of a metal is placed at a distance of 2m from a monochromatic light source of wavelenght 4.8xx10^(-7)m and power 1.0 Watt. The light falls normally on the plate. Find the number of photons striking the metal plate per square metre per second.

A small plate of a metal (work function =1.7eV ) is placed at a distance of 2m from a monochromatic light source of wavelength 4.8xx10^(-7)m and power 1.0watt. The light falls normally on the plate. Find the number of protons striking the metal plate per square metre per second. If a constant magnetic field of strength 10^(-4)T is applied parallel to the metal surface, find the radius of the largest circular path followed by the emitted photoelectron. (use h=6.63xx10^(-34)Js , mass of electron= 9.1xx10^(-31)kg , charge of electron= 1.6xx10^(-19)C

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.

The number of photons emitted per second by a 60 watt source of monochromatic light of wavelength 663 nm is (h=6.63xx10^(-34)Js)

The number of photons emitted per second by a 60 W source of monochromatic light of wavelength 663 nm is: (h=6.63xx10^(-34)Js )

The number of photons emitted per second by a 60 W source of monochromatic light of wavelength 663 nm is: (h=6.63xx10^(-34)Js )