Physics Electron, Photon, Photoelectric Effect and X-rays Cathode Rays and Positive Rays MCQ (Single Correct)

When the speed of electrons increases, then the value of its specific charge

A
Increases
B
Decreases
C
Remains unchanged
D
Increases upto some velocity and then begins to decrease

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Text Solution

Verified by Experts
The correct answer is:
B

Here the velocity of electron increases, so as per Einstein's equation mass of the electron increases, hence the specific charge decreases.

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