Monochromatic light of wavelength `3000 A ` is incident normally on a surface of area `4 cm^(2)`. If the intensity of the light is `5xx10^(-2)W//m^(2)`, determine the rate at which photons strike the surface

(a) Calculate the momentum of a photon of light of wavelength 500 nm. (b) Find the number of photons emitted per second by a 25 W sourse of monochromatic light of wave length 600 nm. (c) How many photons per second does a one watt bulb emit if its efficiency is 10% and the wavelength of light emitted is 500 nm? (d) Monochromatic light of wavelength 300 nm is incident normally on a surface of area 4 cm^(2) . If the intensity of light is 150 m W//m^(2) , determine the rate at which photons strike the surface.

Monochromatic light of wavelength 3000 Å is incident normally on a surface of area 4 cm^(2) . If the intensity of the light is 15 xx 10^(-2) W//m^(2) . The rate at which photons strike the surface is K xx 10^(13) photon/s. The value of K is _________.

Monochromatic light of wavelength 3000 Å is incident normally on a surface of area 4 cm^(2) . If the intensity of the light is 15 xx 10^(-2) W//m^(2) . The rate at which photons strike the surface is K xx 10^(13) photon/s. The value of K is _________.

Monochromatic light of wavelength 3000 Å is incident normally on a surface of area 4 cm^(2) . If the intensity of the light is 15 xx 10^(-2) W//m^(2) . The rate at which photons strike the surface is K xx 10^(13) photon/s. The value of K is _________.

Monochromatic light of wavelength 3000 Å is incident normally on a surface of area 4 cm^(2) If the intensity of light is 150 (m W)/(m^(2)) , the number of photon being incident on this surface in one second is ……

Monochromatic light of wavelength 3000 Å is incident on a surface area 4 cm^(2) . If intensity of light is 150 m W//m^(2) , then rate at which photons strike the target is

Monochromatic light of wavelength 3000 Å is incident on a surface area 4 cm^(2) . If intensity of light is 150 m W//m^(2) , then rate at which photons strike the target is

Monochromatic light of wavelength 589 nm is incident on a water surface from air the wavelength, frequency and speed of (b) refracted light?

A parallel beam of monochromatic light of wavelength 500nm is incident normally on a perfectly absorbing surface. The power through any cross- section of the beam is 10 W. Find (a) the number of photons absorbed per second by the surface and (b) the force exerted by the light beam on the surface.