(C) / per second from a monochromatic light source of 300 watts and 600 A wavelength. How many photons are emitted? . [Planck constant (h) = 6.6x10-345 and speed of light (c) = 3x108ms-11

A 600 W mercury lamp emits monochromatic radiation of wavelength 331.3 nm. How many photons are emitted from the lamp per second? (h =6.626 xx10^(-34)" Js, velocity of light "=3xx10^(8)ms^(-1))

A 600 W mercury lamp emits monochromatic radiation of wave length 313.3 nm. How many photons are emitted from the lamp per second ? ( h = 6.626 xx 10^(-34) Js , velocity of light = 3xx 10^(8) ms^(-1) )

A 600 W mercury lamp emits monochromatic radiation of wavelength 331.3 nm. How many photons are emitted from the lamp per second?

Calculate the energy in joule corresponding to light of wavelength 45 nm : (Planck' constant h = 6.63 xx 10^-34 Js , speed of light c = 3 xx 10^8 ms^-1 )

A 2 mW laser operates at a wavelength of 500 nm. The number of photons that will be emitted per second is: [Given Planck’s constant h = 6.6 xx 10^(-34)Js , speed of light c = 3.0 xx 10^(8) m//s ]

A 2 mW laser operates at a wavelength of 500 nm. The number of photons that will be emitted per second is: [Given Planck’s constant h = 6.6 xx 10^(-34)Js , speed of light c = 3.0 xx 10^(8) m//s ]