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Question: The energy that should be added to an electron to reduce its de-Broglie wavelength from one nm to 0....

The energy that should be added to an electron to reduce its de-Broglie wavelength from one nm to 0.5 nm is –

A

Four times the initial energy

B

Equal times the initial energy

C

Twice the initial energy

D

Thrice the initial energy

Answer

Thrice the initial energy

Explanation

Solution

K.Ee µ 1λe2\frac{1}{\lambda_{e}^{2}}