Which is the correct statement - Vidyadip

MCQ

Which is the correct statement

✓
For an isothermal change $P V=$ constant
B
In an isothermal process the change in internal energy must be equal to the work done
C
For an adiabatic change $\frac{P_2}{P_1}=\left(\frac{V_2}{V_1}\right)^\gamma$, where $\gamma$ is the ratio of specific heats
D
In an adiabatic process work done must be equal to the heat entering the system

✓

Answer

Correct option: A.

For an isothermal change $P V=$ constant

(a) Since $P V=R T$ and $T=$ constant; $\therefore P V=$ constant.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "MCQ" from Thermodynamics→Thermodynamics — all question types→JEE physics STD 12 Science question papers→CBSE Board STD 12 Science question papers→CBSE Board question paper generator→

Similar questions

The periodic time of a simple pendulum of length $1 m$ and amplitude $2 \ cm$ is $5$ seconds. If the amplitude is made $4 \ cm$, its periodic time in seconds will be

A concrete sphere of radius $R$ has a cavity of radius $r$ which is packed with sawdust. The specific gravities of concrete and sawdust are respectively 2.4 and 0.3 for this sphere to float with its entire volume submerged under water. Ratio of mass of concrete to mass of sawdust will be

A particle moves in a circle of radius $25 cm$ at two revolutions per second. The acceleration of the particle in $m / s^2$ is

A cell of internal resistance $1.5 \Omega$ and of e.m.f. 1.5 volt balances $500 \mathrm{~cm}$ on a potentiometer wire. If a wire of $15 \Omega$ is connected between the balance point and the cell, then the balance point will shift

In case of a simple pendulum, time period versus length is depicted by

If $\gamma=2.5$ and volume is equal to $\frac{1}{8}$ times to the initial volume then pressure $P^{\prime}$ is equal to (Initial pressure $=P$ )

A ball of weight $0.1 \mathrm{~kg}$ coming with speed $30 \mathrm{~m} / \mathrm{s}$ strikes with a bat and returns in opposite direction with speed $40 \mathrm{~m} / \mathrm{s}$, then the impulse is (Taking final velocity as positive)

The force constant of a weightless spring is $16 \mathrm{~N} / \mathrm{m}$. A body of mass $1.0 \mathrm{~kg}$ suspended from it is pulled down through $5 \mathrm{~cm}$ and then released. The maximum kinetic energy of the system (spring + body) will be

$K_\alpha$ wavelength emitted by an atom of atomic number $Z=11$ is $\lambda$. Find the atomic number for an atom that emits $K_\alpha$ radiation with wavelength $4 \lambda$

If a body is released into a tunnel dug across the diameter of earth, it executes simple harmonic motion with time period