A source of light is emitting photons. Does all the photons emitted have the same energy? Is the source monochromatic? Explain.

The photons emitted by a source of light do not all have the same energy. Is the source monochromatic? Give your reasoning.

All Photo electrons are not emitted with the same energy as the incident photons. Why?

Find the number of photons emitted per second by a 25 watt source of monochromatic light of wavelength 6000Å .

The number of photons emitted per second by a 60W source of monochromatic light of wavelength 663nm is

A source of light is said to be monochromatic if it will emit light waves of

A source of light is said to be monochromatic if it will emit light waves of

When the intensity of a light source is increased (a) the number of photons emitted by the source in unit time increases (b) the total energy of the photons emitted per unit time increases (c) more energetic photons are emitted (d) faster photons are emitted

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 )