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Line, Line Segment and Ray

Three wires P...

Question

Three wires $P$ , $Q$ and $R$ of the same material and length have radii $0.1 c m$ , $0.2 c m$ and $0.3 c m$ respectively. Which wire has the highest value of Young’s modulus of elasticity?

A

Q

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B

P

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C

R

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D

All have the same value

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Solution

The correct option is D All have the same value
As we know, young modulus of object depends on nature of object or material from which it can be formed, but not on the shape and size of material. That’s why it did not affect through radius.

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Line, Line Segment and Ray

Standard VII Mathematics

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