JEE PHYSICS MCQ: THERMAL PROPERTIES OF MATTER

1 Hard

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Application +4 | -1

19 \mathrm{~g}

of water at

30^{\circ} \mathrm{C}

and

5 \mathrm{~g}

of ice at

-20^{\circ} \mathrm{C}

are mixed together in calorimeter. What is the final temperature of the mixture? Given specific heat of ice

=0.5 \,\mathrm{cal} \,\mathrm{g}^{-1}\left({ }^{\circ} \mathrm{C}\right)^{-1}

and latent heat of fusion of ice

=80\,cal\,{g^{ - 1}}

View answer and explanation

Correct option: C

5^{\circ} \mathrm{C}

Option C (5°C) is correct because the final temperature of the mixture is calculated using the principle of calorimetry, equating heat lost by water to heat gained by ice.

JEE PHYSICS MCQ: THERMAL PROPERTIES OF MATTER

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