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 pho

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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:

Quantrex Academy · Accepted Answer

Correct answer: A. 1 500

P s - Power of source P s = n hc &#955; &#160; ; &#160; n = no. of photons emitted/s &#8658; &#160; &#160; n &#8733; &#955; &#160; &#160; &#8658; &#160; &#160; n 2 n 1 = 1 / 500

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:

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