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Q.

The volume of a metal sphere increases by 0.24% when its temperature is raised by 40oC . The coefficient of linear expansion of the metal is

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a

2 x 10-5 oC-1

b

6 x 10-5 oC-1

c

18 x 10-5 oC-1

d

1.2 x 10-5 oC-1

answer is A.

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Detailed Solution

γ=ΔVVΔt=0.24100×40=6×10−5 /C  oα=2×10−5/∘C
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