Young’s moduli of two wires A and B are in ratio... | Elasticity | JEE Main 2019

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JEE MAIN 2019

08-04-2019 S2

Question

Young’s moduli of two wires A and B are in the ratio 7 : 4. Wire A is 2 m long and has radius R. Wire B is 1.5 m long and has radius 2 mm. If the two wires stretch by the same length for a given load, then the value of R is close to

Select the correct option:

A

1.3 mm

B

1.9 mm

C

1.5 mm

D

1.7 mm

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