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Question: An electromagnetic radiation of wavelength l has the same momentum as an electron moving with a spee...

An electromagnetic radiation of wavelength l has the same momentum as an electron moving with a speed 2 × 105ms–1 –

A

l = 2.64 nm

B

l = 1.64 nm

C

l = 3.64 nm

D

l = 4.64 nm

Answer

l = 3.64 nm

Explanation

Solution

P=mv=hλP = mv = \frac{h}{\lambda}