An electron falls from rest through a vertical distance h in a uniform and vertically upward directed electric field E. The direction of electric field is now reversed, keeping its magnitude the same. A proton is allowed to fall from rest in it through the same vertical distance h. The time of fall of the electron, in comparison to the time of falls of the proton is:
Text Solution
Verified by ExpertsThe correct answer is:
A
F = qE
⇒ 
⇒ 
Since mass of electron is less, so time taken will also be smaller.
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