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Assertion : The work done by the spring ...

Assertion : The work done by the spring force in a cyclic process is zero.
Reason : Spring force is a conservative force.

A

If both assertion and reason are true and reason is a the correct explanation of assertion.

B

If both assertion and reason are true but reason is not the correct explanation of assertion.

C

If assertion is true but reason is false.

D

If assertion is true and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
A
In case of spring forces, the work done only depends on the initial and final positions. So spring force is a conservative force and in cyclie process the initial and final positions are same.
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Knowledge Check

  • A : Work done by the frictional force can’t be positive. R : Frictional force is a conservative force.

    A
    If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1).
    B
    If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2).
    C
    If Assertion is true statement but Reason is false, then mark (3).
    D
    If both Assertion and Reason are falsė statements, then mark (4).

  • Asseration : Work done by a constant force is path independent. Reason : All constantant forces are conservative in nature.

    A
    If both Assertion and Reason are true and the Reason is correct explanation of the Assertion.
    B
    If both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion.
    C
    If Assertion is true, but the Reason is false
    D
    If Assertion is false but the Reason is true.

  • Work done by the conservative force on a system is equal to :

    A
    the change in kinetic energy of system
    B
    the change in potential energy of system
    C
    the change in total machanical energy of system
    D
    None of the above

    • Similar Questions

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    Assertion : Comets move around the sun in elliptical orbits. The gravitational force on the comet due to sun is not normal to the comet’s velocity but the work done by the gravitational force over every complete orbit of the comet is zero. Reason : Gravitational force is a non conservative force.

    Assertion :- Work done by frictional force may be sometimes path independent. Reason :- Frictional force is a non - conservative force.

    Assertion : Work done by the centripetal force in moving a body along a circle is always zero. Reason : Because displacement of the body is along the force.

    Work done by a force on an object is zero, if

    Assertion : In circular motion work done by all the forces acting on the body is zero. Reason : Centripetal force and velocity are mutually perpendicular.

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