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Home » There are two sources of light, each emitting with a power of 100 W. One emits X-rays of wavelength 1nm and the other visible light at 500 nm. Find the ratio of a number of photons of X-rays to the photons of visible light of the given wavelength?
There are two sources of light, each emitting with a power of 100 W. One emits X-rays of wavelength 1nm and the other visible light at 500 nm. Find the ratio of a number of photons of X-rays to the photons of visible light of the given wavelength?
CBSE | Class 12 | Dual Nature of Radiation and Matter | ncert exemplar | Physics
There are two sources of light, each emitting with a power of 100 W. One emits X-rays of wavelength 1nm and the other visible light at 500 nm. Find the ratio of a number of photons of X-rays to the photons of visible light of the given wavelength?

Ex = hvx

Ev = hvv

Let nx and nv be the no.of photons from x-rays and visible light are of equal energies and they emit 100 W power.

nxhvx = nvhvv

nx/nv = vv/vx = λx/λv

nx/nv = 1 nm/500 nm

nx:nv = 1:500

i

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