Physics Thermometry, Thermal Expansion and Calorimetry All Topic Question for Revision Test MCQ (Single Correct)

19 g of water at and 5 g of ice at are mixed together in a calorimeter. What is the final temperature of the mixture? (Take, specific heat of ice and latent heat of fusion of ice )

A
B

C
D

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The correct answer is:
C

Here, specific heat of ice,

Specific heat of water,
Latent heat of fusion of ice,
Here, ice will absorb heat while hot water will release it.
Let T be the final temperature of the mixture.
Assuming water equivalent of calorimeter to be neglected.
Heat given by water,

… (i)

Heat absorbed by ice,

=

= … (ii)

According to principle of calorimetry,

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