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?
Here, P=100W,λ1=1nm,λ2=500nm Let n1 and n2 be the number of photons of X-rays and visible light emitted from the two sources ∴ n1λ1hc=n2λ2hc or λ1n1=λ2n2n or n2n1=λ2λ2=5001
