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When a force is applied on a wire of uniform cross-sectional area `3xx10^-6m^2` and length 4 m, the increase in length is 1mm. Energy stored in it will be `(Y=2xx10^(11)(N)/(m^2)`)

A

6250 Joule

B

0.177 Joule

C

0.075 Joule

D

0.150 Joule

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The correct Answer is:
C
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MOTION-ELASTICITY-EXERCISE -3
  1. Two wires of the same material have lengths in the ratio 1:2 and their...

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  2. When a weight of 10 kg is suspended from a copper wire of length 3 met...

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  3. When a force is applied on a wire of uniform cross-sectional area 3xx1...

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  4. A force of 10^3 newton, stretches the length of a hanging wire by 1 mi...

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  5. A wire of cross-sectional area 3 mm^(2) is first stretched between two...

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  6. For steel the breaking stressis 6xx10^(6)N//m^(2) and the density is 8...

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  7. The units of modulus of rigidity are

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  8. A 2m long rod of radius 1 cm which is fixed from one end is given a tw...

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  9. A ball falling in a lake of depth 200 m shows 0.1% decrease in its vol...

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  10. An iron wire of length 4 m and diameter 2 mm is loaded with a weight o...

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  11. The dimensional formula for young's modulus is

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  12. A fixed volume of iron is drawn into a wire of length l. The extension...

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  13. A mass of 0.5 kg is suspended from wiere, then length of wire increase...

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  14. If the strain in a wire is not more than 1//1000 and Y =2xx10^(11)N//m...

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  15. A wire of length L and radius r is fixed at one end. When a stretching...

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  16. How much force is required to produce an increase of 0.2 % in the leng...

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  17. If the interatomic spacing in a steel wire is 2.8xx10^(-10)m. And Y("s...

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  18. The load versus elongation graph for four wires of the same material a...

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  19. The mean distance between the atoms of iron is 3xx10^(-10) m and inter...

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  20. The area of cross section of a steel wire (Y=2.0 xx 10^(11) N//m^(2)) ...

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