Home
Class 12
PHYSICS
Assertion :- When a spring is elongated ...

Assertion `:-` When a spring is elongated work done by spring is negative but when it compressed work done by spring is positive.
Reason`:-` Work done by spring is path dependent

A

If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.

B

If both Assertion & Reason are True but Reason is not a correct explanation of the Assertiion.

C

If Assertion is True but the Reason is False.

D

If both Assertion & Reason are False

Text Solution

Verified by Experts

The correct Answer is:
D
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

When is the work done by gravity negative ?

Work Done By Spring Forces

Knowledge Check

  • When work done by force of gravity is negative, then

    A
    PE increases
    B
    KE increases
    C
    PE remains constant
    D
    PE decrease

  • Assertion : A spring has potential energy, both when it is compressed or stretched. Reason : In compressing or stretching , work is done on the spring against the restoring force

    A
    Both A and are true and R is correct explanation of the assertion
    B
    Both A and R are true but R is not the correct explanation of the assertion
    C
    A is true, but R is false .
    D
    A is false, but R is true

  • The work done on the system in an aidabatic compression depends on

    A
    the increase in internal energy of the system
    B
    the decrease in internal energy
    C
    the change in volume of the system
    D
    all the above

    • Similar Questions

    Explore conceptually related problems

    When is work done by a force negative ?

    Assertion: A spring has potential energy , both when it is compresed or stretched. Reason: In compressing or stretching, work is done on the spring against the resotoring force.

    A spring is stretched by distance x and then compressed to same distance from its original length. The work done by the spring force is (k=spring constant)

    These questions consists of two statements each printed as Assertion and Reason. While answering these question you are required to choose any one of the following five reponses (a) If both Assertion and Reason arecorrect and Reason is the correct explanation of Asserrtion. (b) If both Assertion and Reason are correct but Reason is not the correct explanation of Assertion. (c ) If Assertion is true but Reason is false. (d) If Assertion is false but Reason is true. Assertion Total work done by spring may be positive ,negative or zero. Reason Direction of spring force is always towards mean position.

    Assertion :- Work done is positive when force acts in the direction of displacement. Reason :- Work done by frictional force can not be positive.

    Home
    Profile