Two sources of light emit X-rays of wavelength 1 nm and visible light of wavelength 500 nm, respectively. Both the sources emit light of the same power 200 W. The ratio of the number density of photons of X-rays to the number density of photons of the visible light of the given wavelengths is:

(A) (1)/(500). For the same power, the number of photons is (P)/(hc/λ) ∝ λ. (n_X)/(n_V) = (1)/(500)

Dual Nature of Radiation and Matter question for JEE Main (JEE Main 2020 (3 Sep, Shift 2)), with solution

Q 12-11-151JEE MainJEE Main 2020 (3 Sep, Shift 2)Easy

Two sources of light emit X-rays of wavelength $1\ \text{nm}$ and visible light of wavelength $500\ \text{nm}$, respectively. Both the sources emit light of the same power $200\ \text{W}$. The ratio of the number density of photons of X-rays to the number density of photons of the visible light of the given wavelengths is:

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Dual Nature of Radiation and Matter question for JEE Main (JEE Main 2020 (3 Sep, Shift 2)), with solution

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