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A solid sphere falls with a terminal vel...

A solid sphere falls with a terminal velocity of `20 ms^-1` in air. If it is allowed to fall in vacuum

A

terminal velocity will be `20 ms^(-1)`

B

terminal velocity will be less than `20 ms^(-1)`

C

terminal velocity will be greater than `20 ms^(-1)`

D

no terminal velocity will be attained

Text Solution

Verified by Experts

The correct Answer is:
D
As in vacuum, there is no viscosity, no resistive force and hence no terminal velocity can be acquired.
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