JEE PHYSICS MCQ: THERMAL PROPERTIES OF MATTER

1 Medium

1 of 1

Application +4 | -1

20 \mathrm{gm}

water is at

10^{\circ} \mathrm{C}

and

30 \mathrm{gm}

water is at

40^{\circ} \mathrm{C}

if these are mix together then find out the

\mathrm{T}_{\text {mix }}

View answer and explanation

Correct option: A

28^{\circ} \mathrm{C}

Option A (

28^{\circ} \mathrm{C}

) is correct because it is calculated using the principle of calorimetry, where heat lost by the hotter water equals the heat gained by the cooler water.

More Questions from THERMAL PROPERTIES OF MATTER

Practice All Chapter MCQs →

In the relation

n = \frac{{PV}}{{RT}},n =

Mud houses are cooler in summer and warmer in winter because For cooking the food, which of the following type of utensil is most suitable Which of the following statements is correct? 300 gm of water at

{25^0}

is added to 100 g of ice at

{0^0}C

. The final temperature of the mixture is A black body radiates energy at the rate of

E\,\,W{m^{ - 2}}

at a high temperature T K. When the temperature is reduced to

\left( {\frac{T}{2}} \right)K

the radiant energy is