Two metals P and Q are heated through the same temperature difference. If the ratio...

JAMB 2012

Two metals P and Q are heated through the same temperature difference. If the ratio of the linear expansivities of P to Q is 2:3 and the ratio of their
length is 3: 4 respectively, the ratio of the increase in lengths of P to Q is

A. 1:2
B. 2:1
C. 8:9
D. 9:8

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Correct Answer: Option A

Explanation

P: $\frac{\alpha h \theta}{\alpha h \theta}$

$\frac{2 \times 3 \times \theta}{3 \times 4 \times \theta}$

$\frac{1}{2}$

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Two metals P and Q are heated through the same temperature difference. If the ratio...

Correct Answer: Option A

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