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Stress-Strain Graph

Assertion A: ...

Question

Assertion (A): Rigidity modulus of a liquid is infinity.
Reason (R): For a ductile material yield point and breaking point are separated by larger distance than for brittle materials on the stress-starin curve.

A

Both assertion and reason are true and the reason is correct explanation of the assertion

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B

Both assertion and reason are true, but reason is not correct explanation of the assertion

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C

Assertion is true, but the reason is false

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D

Assertion is false, but the reason is true

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Solution

The correct option is D Assertion is false, but the reason is true
In all fluids, the shear modulus is zero because if one applies a force, the liquid simply flows and the strain becomes arbitrarily large. This is why transverse waves won't propagate in fluids, because a transverse wave is a shear wave.

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