Velocity of sound in air is 332 `ms^-1`. Its velocity in vacuum will be
A. `gt332ms^-1`
B. `=332ms^-1`
C. `lt332ms^-1`
D. meaningless
A. `gt332ms^-1`
B. `=332ms^-1`
C. `lt332ms^-1`
D. meaningless
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Correct Answer – D