Properties Of Solids And Liquids Question 452

Question: Three liquids of equal volumes are thoroughly mixed. If their specific heats are s1,s2,s3 and their temperatures θ1,θ2,θ3 and their masses m1,m2,m3 respectively, then the final temperature of the mixture is

Options:

A) s1θ1+s2θ2+s3θ3m1s1,m2s2,m3s3

B) m1s1θ1+m2s2θ2+m3s3θ3m1s1,m2s2,m3s3

C) m1s1θ1+m2s2θ2+m3s3θ3m1θ1,m2θ2,m3θ3

D) m1θ1+m2θ2+m3θ3s1θ1,s2θ2,s3θ3

Show Answer

Answer:

Correct Answer: B

Solution:

[b] Let lost temperature is TC

then m1s1T1+m2s2T2+m3s3T3 = released energy =m1s1T1+m2s2T2+m3s3T3 = energy taken T=m1s1T1+m2s2T2+m3s3T3m1s1+m2s2+m3s3



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