Physics Elasticity ( Mechanical Properties of Solids ) Karnataka - CET Previous Year Question MCQ (Single Correct)

Two wires A and B are stretched by the same load. If the area of cross-section of wire A is double that of B, then the stress on B is

A
equal to that on A
B
twice that on A
C
half that on A
D
four times that on A.

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Text Solution

Verified by Experts
The correct answer is:
B

: As both wires A and B are stretched by the same load (say W ),

Stress on A is

(stress) and that on B is

(stress)

where and are the areas of cross-section of wires A and B respectively.

Thus,

But as per question

or

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