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The units of Young's modulus of elastici...

The units of Young's modulus of elasticity are

A

`"dyne"//cm^(2)`

B

`cm^(2)//"dyne" `

C

`"dyne "cm^(2)`

D

dyne / cm

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The correct Answer is:
A
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The unit of Young’s modulus is

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Assertion The materials having low value of Young's modulus of elasticity are more ductile. Reason If Young's modulus is less, they can be easily stretched as wires.

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Assertion If length of a wire is halved, its Young's modulus of elasticity will become two times. Reason The ratio of longitudinal stress and longitudinal strain is called Young's modulus of elasticity.

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NIKITA PUBLICATION-ELASTICITY-MCQ
  1. Stress to strain ratio is equivalent to

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  2. The maximum stress up to which a body can subjected without permanent...

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  3. The units of Young's modulus of elasticity are

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  4. Find the dimensions of stress, strain and modulus of elasticity.

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  5. If 'S' is stress and 'Y' is young's modulus of material of a wire, the...

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  6. The bulk modulus of a perfectly rigid body is

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  7. Young's modulus of perfectly elastic body is

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  8. When a wire is twisted, the strain produced in it is

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  9. The compressibility of a substance is

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  10. If the length of a wire is doubled, then its Young's modulus

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  11. Young's modulus of a substance depends of

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  12. When temperature of a material increases, its Young's modulus

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  13. Shearing strain is expressed by

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  14. The dimensional formula for the modulus of rigidity is

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  15. A gas is filled in a cylinder with initial pressure P, initial volume ...

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  16. Which of the following does not exhibit a shear ?

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  17. A cube is fixed at base and tangential force 'F' acting on the upper f...

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  18. A wire extends by 'l' on the application of load 'mg'. Then the energy...

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  19. If the wire of length 'L' is subjected to an external force 'F' cause...

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  20. The reason for the change in shape of a regular body is

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