Home
Class 11
PHYSICS
Statement-1: A person walking on a horiz...

Statement-1: A person walking on a horizontal road with a load on his head does no work on the load against gravity.
Statement-2: No work is said to be done, it directions of force and displacement of load are perpendicular to each other.

A

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

B

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

C

If asserti on is true but reason is false

D

If the assertion and reason both are false

Text Solution

Verified by Experts

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

Topper's Solved these Questions

  • WORK, ENERGY, POWER & COLLISION

    ERRORLESS |Exercise Assertion|30 Videos

  • WORK , ENERGY , POWER AND COLLISION

    ERRORLESS |Exercise Self Evaluation Test|19 Videos

Similar Questions

Explore conceptually related problems

A coolie with load on his head is walking on a horizontal platform. What is work done against gravity.

How much work is done by a coolie walking on a horizontal platform with a load on his head? Explain.

Knowledge Check

  • Assertion : A person working on a horizontal road with a load on his head does no work. Reason : No work is said to be done, if directions of force and displacement of load are perpendicular to each other.

    A
    If both assertion and reason are true and the reason is the correct explanation of the assertion.
    B
    If both assertion and reason are true but reason is not the correct explanation of the assertion.
    C
    If assertion is true but reason is false.
    D
    If the assertion and reason both are false.

  • Assertion (A): Centripetal force does no work . Reason (R) : Force and displacement are perpendicular to each other

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

  • Statement-I : A point charge Q is rotated in a circle of radius r around a charge q. The work done will be zero. Statement-II : For this motion the force is along the radius and direction of motion is perpendicular

    A
    If both Statement-I and Statement-II are true, and Statement-II is the correct explanation of Statement -I.
    B
    If both Statement-I and Statement-II are true but Statement-II is not the correct explanation of Statement -I.
    C
    If Statement -I is true but Statement-II is false
    D
    If Statement-I is false but Statement -II is true

    • Similar Questions

    Explore conceptually related problems

    How much work is done by a coolie walking on a horizontal platform with a load on his head?

    A coolie with load on his head is walking on a horizontal platform. What is work done ?

    A porter carrying load on his head moves up a staircase. Is he doing any work?

    A man carries a load on his head through a distance of 5 m. The maximum amount of work is done when he

    A man carries a load of 5 kg on his head through a distance of 10 m. the minimum amount of work is done when he

    Home
    Profile