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Q.

A silver rod of length 1 m at 0 0C is heated to 100 0C. It’s length is increased by 0.19 cm. Coefficient of cubical expansion of silver is

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a

16.1×105/0C

b

1.9×105/0C

c

5.7×105/0C

d

0.63×105/0C

answer is A.

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Detailed Solution

Co-efficient of linear expansion is α=ΔllΔt=0.0019100=1.9×105 /C
Coefficient of volume expansion is 3α=5.7×105/C
 

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