Question

Nomination of electron is 5200Å. At which
velocity of electron its wavelength is equal to
photon.
​

Answer 1

Answer:

Momentum, p=mv=

λ

h

or v=

mλ

h

∴v=

9.1×10

−31

×5.2×10

−7

6.62×10

−34

⇒v=

9.1×5.1

6.2×10

4

⇒v=1400 m/s.

Explanation:

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Answer 2

Answer:

what should be the velocity of an electron so that its momentum becoumes equal to that of a photn of wavelength 5200Å ≈1400m/s.