List of top Physics Questions on specific heat capacity asked in JEE Main

Match List-I with List-II.

List-I	List-II
(A) Heat capacity of body	(I) $ J\,kg^{-1} $
(B) Specific heat capacity of body	(II) $ J\,K^{-1} $
(C) Latent heat	(III) $ J\,kg^{-1}K^{-1} $
(D) Thermal conductivity	(IV) $ J\,m^{-1}K^{-1}s^{-1} $

Two moles a monoatomic gas is mixed with six moles of a diatomic gas. The molar specific heat of the mixture at constant volume is :

The pressure of a gas changes linearly with volume from $A$ to $B$ as shown in figure If no heat is supplied to or extracted from the gas then change in the internal energy of the gas will be Is

Let $\gamma_1$be the ratio of molar specific heat at constant pressure and molar specific heat at constant volume of a monoatomic gas and $\gamma_2$ be the similar ratio of diatomic gas. Considering the diatomic gas molecule as a rigid rotator, the ratio, $\frac{\gamma_1}{\gamma_2}$ is :

A water heater of power $2000 W$ is used to heat water. The specific heat capacity of water is $4200 J$ $kg ^{-1} K ^{-1}$ .The efficiency of heater is $70 \%$ .Time required to heat $2 kg$ of water from $10^{\circ} C$ to $60^{\circ} C$ is___$ s$
(Assume that the specific heat capacity of water remains constant over the temperature range of the water)

A 12.5 eV electron beam is used to bombard gaseous hydrogen at room temperature. The number of spectral lines emitted will be

an body cools down from 80°C to 60°C in 5 minutes The temperature pf the surrounding is 20°C. The time taken to cool from 60°C to 40°C is

An engine operating between the boiling and freezing points of water will have
A. efficiency more than 27%
B. efficiency less than the efficiency a Carnot engine operating between the same two temperatures.
C. efficiency equal to 27%
D. efficiency less than 27%

A copper block of mass 5.0 kg is heated to a temperature of 500°C and is placed on a large ice block. What is the maximum amount of ice that can melt?

[Specific heat of copper 0.39 J g^–1 °C^–1 and latent heat of fusion of water : 335 J g^–1]

Given below are two statements:

Statement-I : Susceptibilities of paramagnetic and ferromagnetic substances increase with decrease in temperature.

Statement-II : Diamagnetism is a result of orbital motions of electrons developing magnetic moments opposite to the applied magnetic field.

Choose the correct answer from the options given below:-

A steam engine intakes $50\ g$ of steam at $100°C$ per minute and cools it down to $20°C$. If latent heat of vaporization of steam is $540\ cal\ g^{–1}$, then the heat rejected by the steam engine per minute is ______ $× 10^3$ $cal.$
(Given : specific heat capacity of water : $1\ cal \ g^{–1} °C^{–1}$)

A monoatomic gas performs a work of $\frac Q4$ where $Q$ is the heat supplied to it. The molar heat capacity of the gas will be ____ $R$ during this transformation. Where $R$ is the gas constant.

One mole of a monoatomic gas is mixed with three moles of a diatomic gas. The molecular specific heat of mixture at constant volume is $\frac{\alpha^2}{4}$ RJ/mol k; then the value of α will be _______.
(Assume that the given diatomic gas has no vibrational mode).

Two identical breakers A and B contain equal volumes of two different liquids at $60^{\circ}C$ each and left to cool down. Liquid in A has density of $8 \times 10^2 \; kg/m^3$ and sp ecific heat o f 2000 J $kg^{-1} \; K^{-1}$ while liquid in B has density o f 103 kg m-3 and sp ecific heat o f 4000 J $kg^{-1} K^{-1}$. Which of the following best describes their temperature versus time graph schematically? (assume the emissivity of both the beakers to be the same)

Two moles of helium are mixed with $n$ moles of hydrogen. If $\frac{C_P}{C_V} = \frac{3}{2}$ for the mixture, then the value of n is :

A vernier caliper having least count $\frac{1}{20N}$cm and one main scale division is 1 mm, then value of one vernier scale division is