Thermometry Calorimetry And Thermal Expansion Question 33
Question: Two liquids A and B are at 32°C and 24°C. When mixed in equal masses the temperature of the mixture is found to be 28°C. Their specific heats are in the ratio of [DPMT 1996]
Options:
A) 3 : 2
B) 2 : 3
C) 1 : 1
D) 4 : 3
Show Answer
Answer:
Correct Answer: C
Solution:
Temperature of mixture $ {\theta_{mix}}=\frac{{\theta_{A}}c_{A}+{\theta_{B}}c_{B}}{c_{A}+c_{B}} $ Þ $ 28=\frac{32\times c_{A}+24\times c_{B}}{c_{A}+c_{B}} $ Þ $ 28,c_{A}+28c_{B}=32,c_{A}+24,c_{B} $ Þ $ \frac{c_{A}}{c_{B}}=\frac{1}{1} $
BETA
