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

A monochromatic source emits light of wavelength 550 nm is emitted by a source . Find the number of photons emitted by the source in 90 seconds if power of source is 60 W.

A 200 W bulb emits monochromatic light of wavelenght 1400 A and only 10% of the energy is emitted as light. The number of photons emitted by the bulb per second will be

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

n number of photons of frequency f are emitted per second from a light source of power P (h = Planck's constant, c = speed of light). Then

A 100 W power source emits green light at a wavelength lambda=5000A^@ . How many photons per minute are emitted by the source ?