The temperature of a wire is doubled. The Young's modulus o…

Physics Elasticity ( Mechanical Properties of Solids ) NCERT Examplar MCQ (Single Correct)

The temperature of a wire is doubled. The Young's modulus of elasticity:

Will also double

Will become four times

Will remain same

Will decrease

Text Solution

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The correct answer is:

With increase in temperature, length of a wire increases as

Where is change in the temperature, is original length, is coefficient of linear expansion and is length at temperature T.

When temperature increases increases, hence, Y decreases.

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