Q.

If the coefficient of real expansion  γR is 1% more then coefficient of apparent expansion, linear expansion coefficient of the material is

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a

γR303

b

100γR101

c

101γR300

d

101γR100

answer is 1.

(Detailed Solution Below)

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Detailed Solution

given γR coefficient of real expansion in 1% more than γa coefficient of apparent expansion ⇒γR=γa+1100γa=101100γa we know that  γR=γa+γg γR=γa+3αg substitute γavalue here γR=100101γR+3αg 3αg=γR1−100101=γR101 αg=γR303
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