$250 \mathrm{~gm}$ of water and equal volume of alcohol of mass $200 \mathrm{~gm}$ are replaced successively in the same calorimeter and cool from $60^{\circ} \mathrm{C}$ to $55^{\circ} \mathrm{C}$ in 130 seconds and 67 seconds respectively. If the water equivalent of the calorimeter is $10 \mathrm{~gm}$, then the specific heat of alcohol (in $\mathrm{cal} / \mathrm{gm}-{ }^{\circ} \mathrm{C}$) is

JEE PHYSICS MCQ: THERMAL PROPERTIES OF MATTER

1 Medium

1 of 1

Application +4 | -1

250 \mathrm{~gm}

of water and equal volume of alcohol of mass

200 \mathrm{~gm}

are replaced successively in the same calorimeter and cool from

60^{\circ} \mathrm{C}

55^{\circ} \mathrm{C}

in 130 seconds and 67 seconds respectively. If the water equivalent of the calorimeter is

10 \mathrm{~gm}

, then the specific heat of alcohol (in

\mathrm{cal} / \mathrm{gm}-{ }^{\circ} \mathrm{C}

) is

View answer and explanation

Correct option: C

0.62

Option C (0.62) is correct because it is calculated by equating the rate of heat loss for water and alcohol in the calorimeter, accounting for the water equivalent of the calorimeter.

JEE PHYSICS MCQ: THERMAL PROPERTIES OF MATTER

More Questions from THERMAL PROPERTIES OF MATTER