NEET Physics Question - Solid and Fluids

Given below are two statements : One is labelled as Assertion (A) and the other is labelled as Reason (R)

Assertion (A): The stretching of a spring is determined by the shear modulus of the material of the spring

Reason (R): A coil spring of copper has more tensile strength than a steel spring of same dimensions.

In the light of the above statements, choose the most appropriate answer from the options given below :

(2022)

(A) is false but (R) is true

Both (A) and (R) are true and (R) is the correct explanation of (A)

Both (A) and (R) are true and (R) is not the correct explanation of (A)

(A) is true but (R) is false

Solution:

When a spring is stretched, the wire itself undergoes torsion, which is governed by the shear modulus of the material, making the assertion true. Steel has a higher tensile strength and elasticity than copper, so the reason is false.

Rankers Physics

Solution:

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