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Assertion: Ratio of stress and strain is...

Assertion: Ratio of stress and strain is always constant for a substance.
Reason : This ratio is called modulus of elasticity .

A

(a) If both Assertion and Reason are true and the Reason is correct explanation of the Assertion.

B

(b) If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.

C

(c) If Assertion is true, but the Reason is false.

D

(d) If Assertion is false but the Reason is true.

Text Solution

Verified by Experts

The correct Answer is:
D
Stress `prop`strain only in proportionality limit.
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  7. Assertion : identical springs of steel and copper are equally stretche...

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  8. Assertion Young's modulus of elasticity is not defined for liquids. ...

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  9. Assertion Stress and modulus of elasticity have the same dimensions ...

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  10. Assertion Modulus of elasticity does not depend upon the dimensions of...

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  11. Assertion Upto the elastic limit, strain prop stress. Reason Upto el...

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  12. Assertion Incompressible liquids have finite value of bulk modulus of ...

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  13. Assertion If length of a wire is halved, its Young's modulus of elasti...

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  14. Assertion If a wire is stretched, only half of the work done in stretc...

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  15. Assertion The materials having low value of Young's modulus of elastic...

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  16. Assertion Bulk modulus of elasticity of gases is pressure dependent. ...

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  17. Assertion Bulk modulus of an incompressible fluid is infinite. Reaso...

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  18. Assertion Upto elastic limit of a stress-strain curve, the steel wire ...

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  19. Assertion A diabatic bulk modulus of an ideal gas in more than its iso...

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