Physics Electron, Photon, Photoelectric Effect and X-rays Telangana & AP CET Previous Year Question MCQ (Single Correct)

A particle of mass and electric change has de-Broglie wavelength . Then kinetic energy of this particle is
(Plank's constant, )

A
B

C
D

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Text Solution

Verified by Experts
The correct answer is:
D

To solve this quickly, use the relationship between de-Broglie wavelength ( ) and kinetic energy ( ):

The Formula

Plug in Values

Notice that cancels out:

Convert to eV

Divide by the charge of an electron :

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