$25 \mathrm{gm}$ water is filled in a vessel of water equivalent $5 \mathrm{gm}$ at $70^{\circ} \mathrm{C}$ then find out the $T_{\text {mix }}$ when $20 \mathrm{gm}$ of water at $0^{\circ} \mathrm{C}$ is mixed.

JEE PHYSICS MCQ: THERMAL PROPERTIES OF MATTER

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25 \mathrm{gm}

water is filled in a vessel of water equivalent

5 \mathrm{gm}

70^{\circ} \mathrm{C}

then find out the

T_{\text {mix }}

when

20 \mathrm{gm}

of water at

0^{\circ} \mathrm{C}

is mixed.

View answer and explanation

Correct option: A

42^{\circ} \mathrm{C}

Option A (

42^{\circ} \mathrm{C}

) is correct because it is the final temperature calculated using the principle of calorimetry.