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A brass rod of cross-sectional area 1cm^...

A brass rod of cross-sectional area `1cm^(2)` and length 0.2 m is compressed lengthwise by a weight of 5 kg. if young's modulus of elasticity of brass is `1xx10^(11)N//m^(2)` and `g=10m//sec^(2)` then increase in the energy of the rod will be

A

`10^(-5)`joule

B

`2.5xx10^(-5)` joule

C

`5xx10^(-5)` joule

D

`2.5xx10^(-4)` joule

Text Solution

Verified by Experts

The correct Answer is:
B
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ALLEN -ELASTICITY, SURFACE TENSION AND FLUID MECHANICS-Exercise 1 (Elasticity)
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  11. The Young's modulus of a rubber string 8 cm long and density 1.5kg//m^...

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  14. Two wires of same diameter of the same material having the length l an...

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  15. A brass rod of cross-sectional area 1cm^(2) and length 0.2 m is compre...

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  16. A weight is suspended from a long metal wire. If the wire suddenly bre...

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