The speed of a longitudinal wave in a metallic bar is 
. If the density and Young's modulus of the bar material are increased by 
and 
, respectively then the speed of the wave is changed approximately to 
.
Text Solution
Verified by ExpertsThe correct answer is:
B
The speed of a longitudinal wave in a solid is given by 
where 
is Young's modulus and 
is density.
Initial condition: 
After changes: 
( 
increase) and 
( 
increase)
New speed: 
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