The de-Broglie wavelength of an electron is the same as that of a photon. If velocity of electron is 25% of the velocity of light, then the ratio of K.E. of electron and K.E. of photon will be:
(1) 1/1
(2) 1/8
(3) 8/1
(4) 1/4
JEE-2024
Solution:
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