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Assertion : A kinetic energy of a body...

Assertion : A kinetic energy of a body is quadrupled, when its velocity is doubled. Reason : Kinetic energy is proportional to square of velocity

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.

Text Solution

Verified by Experts

The correct Answer is:
A
`K = (1)/(2)m v^(2) therefore K prop v^(2)`
If velocity is doubled then K.E. will be quadrupled.
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Knowledge Check

  • What will be the kinetic energy of a substance when its velocity is doubled ?

    A
    Double
    B
    Half
    C
    Four times,
    D
    One-fourth.

  • What will be the kinetic energy of a body when its velocity is halved ?

    A
    Double
    B
    Half
    C
    Four times,
    D
    One-fourth.

  • Kinetic energy of an ideal gas is proportional to

    A
    T
    B
    `(1)/(T)`
    C
    `T^(@)`
    D
    `T^2`

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