A bulb of 120watts emits of light of wave length 920nm, then number of photon enitted by bulb per second are `[X]xx10^20` then value of X is

A 50 watt bulb emits monochromatic red light of wavelength of 795 nm. The number of photons emitted per second by the bulb is x xx 10^20 . The value of x is _______. (Nearest integer) [Given : h = 6.63 xx 10^(-34) Js and c = 3.0 xx 10^8 ms^(-1) ]

A 50 watt bulb emits monochromatic red light of wavelength of 795 nm. The number of photons emitted per second by the bulb is x xx 10^20 . The value of x is _______. (Nearest integer) [Given : h = 6.63 xx 10^(-34) Js and c = 3.0 xx 10^8 ms^(-1) ]

A 100 W bulb is emmiting light of wavelength 300 nm .Calculate the number of photon emitted by the bulb in 1 min?

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

A 100 watt bulb emits monochromatic light of wavelength 400 nm. Calculate the number of photons emitted per second by the bulb.

A 100 watt bult emits monochromatic light of wavelength 400 nm. Calcualte the number of photons emitted per second by the bulb.

A 100 watt buble emits monochromatic light of wavelength 400 nm. Then the number of photons emitted per seccond by the buble is nearly -