Q.

Two bodies have the same heat capacity. If they are combined to form a single composite body, the equivalent specific heat of this composite body is . s1 and s2 are there individual specific heat

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a

2s1s2s1-s2

b

s1s2s1+s2

c

s1+s22

d

2s1s2s1+s2

answer is D.

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Detailed Solution

Let the two bodies have masses m1,m2 and specific heatss1 and s2 m1s=m2s2  orm1m2=s2s1      Let s = specific heat of the composite body. m1s1+m2s2 =m1+m2s s=2m1s1m1+m2=2m1s1m1+m1s1s2=2s1s2s1+s2
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