Statement I : Lead is more elastic than rubber.
Statement II : If the same load is attached to lead and rubber wires of the same cross-sectional area, the strain of lead is very much less than that of rubber.

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If statement I is true but statement II is false

If both statement I and statement II are true but statement II is not the correct explanation of statement I

If both statement I and statement II are false

If both statement I and statement II are true and statement II is the correct explanation of statement I

answer is A.

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Detailed Solution

On applying load on lead and rubber wires of same cross-sectional area, the strain produced in lead is much less than rubber wires. Now from the relation,

Y = Young's modulus

or Y = $\frac{stress}{strain}$

The Young's modulus of elasticity is greater for lead wires. Hence, lead is elastic than rubber.

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