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If the volume of a block os aluminium is...

If the volume of a block os aluminium is decreased be `1%` the pressure (stress) on is surface is increased by (Bulk moduals) of `Al=7.5xx10^(10)Nm^(-2))`

A

`7.5 xx 10^(10) Nm^(-2)`

B

`7.5 xx 10^(8) Nm^(-2)`

C

`7.5 xx 10^(6) Nm^(-2)`

D

`7.5 xx 10^(4) Nm^(-2)`

Text Solution

Verified by Experts

The correct Answer is:
B
`(Delta V)/(V)= 0.01, B= 7.5 xx 10^(10) N//m^(2)`
`B= (-P)/(Delta V//V) rArr P= 7.5 xx 10^(10) xx 0.01= 7.5 xx 10^(8) N//m^(2)`
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