Read the following two statements below carefully and state, with reasons, if it is true or false.

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asked Mar 7, 2018 in Physics by shabnam praween (19,050 points) 5 6 8

Read the following two statements below carefully and state, with reasons, if it is true or false.

(a) The Young’s modulus of rubber is greater than that of steel;
(b) The stretching of a coil is determined by its shear modulus.

1 Answer

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answered Mar 7, 2018 by mdsamim (213,225 points) 5 10 15
selected Mar 7, 2018 by shabnam praween
 
Best answer

(a) False
(b) True

For a given stress, the strain in rubber is more than it is in steel.

Hence, Young’s modulus for rubber is less than it is for steel

Shear modulus is the ratio of the applied stress to the change in the shape of a body. The stretching of a coil changes its shape. Hence, shear modulus of elasticity is involved in this process.

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