MCQ
Assertion: Reversible system are difficult to find in real world.
Reason: Most processes are dissipative in nature.
  • A
    Assertion and reason both are correct statements and reason is correct explanation for assertion.
  • B
    Assertion and reason both are correct statements but reason is not correct explanation for assertion.
  • C
    Assertion is correct statement but reason is wrong statement.
  • D
    Assertion is wrong statement but reason is correct statement.

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

Similar questions

Assertion (A): Two vectors are equal when their magnitude and direction both are equal.
Reason (R): For any two vectors $\overrightarrow{ A }$ and $\overrightarrow{ B }$, if angle between them is $\frac{\pi}{4}$ rad, then $\overrightarrow{ A } \times \overrightarrow{ B }=\overrightarrow{ A } \cdot \overrightarrow{ B }$.
Assertion (A): According to the law of conservation of mechanical energy change in potential energy is equal and opposite to the change in kinetic energy.
Reason (R): Mechanical energy is not a conserved quantity.
Assertion (A): Even when orbit of a satellite is elliptical, its plane of rotation passes through the centre of earth.
Reason (R): According to law of conservation of angular momentum plane of rotation of satellite always remain same.
Assertion (A): A quick collision between two bodies is more violent than slow collision, even when initial and final velocities are identical.
Reason (R): The rate of change of momentum determines that the force is small or large.
Assertion (A): Two particle of different mass, projected with same velocit, the maximum height attained by both the particle will be same.
Reason (R): The maximum height of projectile is independent of patricle mass. is equal to maximum height attained by projectile.
Assertion (A): Work done over a closed path is always zero.
Reason (R): No force is required in a closed path.
Assertion (A): State variables are required to specify the equilibrium state of the system.
Reason (R): Pressure is an intensive state variable.
Assertion (A): A force act upon the earth revolving in a circular orbit about the sun. Hence work should be done on the earth.
Reason (R): The necessary centripetal force for the circular motion of the earth, comes from the gravitational force between earth and the sun.
Assertion: The time period of revolution of a satellite close to surface of earth is smaller than that revolving away from surface of earth.
Reason: The square of time period of revolution of a satellite is directly proportional to cube of its orbital radius.