For a 5 gm substance the heat supplied (in cals.) and temperature (in ∘C) curve is given below. Then the specific heat of substance for liquid state will be :
1cal/gm∘C
0.2cal/(gm∘C
2.5cal/gm∘C
Can't be obtain
A
0.2cal/(gm∘C
B
2.5cal/gm∘C
C
1cal/gm∘C
D
Can't be obtain
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Solution
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Specific heat= 100cal(5g)(100oC)=0.2cal/goC Energy= 220-120= 100 cal δ(T)=100−0=100oC m= 5g
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