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Work, Energy, and Power

Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.

Work-Energy Theorem

Subtopic

Work-Energy Theorem under Work, Energy, and Power for Grade 11 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Work done is a product of force and displacement. In the context of the work-energy theorem, if work is done against a frictional force, the kinetic energy:

    A.

    Increases

    B.

    Decreases

    C.

    Stays constant

    D.

    Changes into potential energy

  2. 2.

    A constant force FF is applied to a body of mass mm initially at rest. The plot of kinetic energy versus displacement xx is a:

    A.

    Parabola

    B.

    Straight line passing through origin

    C.

    Circle

    D.

    Hyperbola

  3. 3.

    A particle of mass mm is accelerated from rest to speed vv by a force FF over distance dd. If the same force FF acts on mass 2m2m over the same distance dd, the final kinetic energy of the second mass will be:

    A.

    Same as the first

    B.

    Double the first

    C.

    Half the first

    D.

    Four times the first

Download the worksheet for Work, Energy, and Power - Work-Energy Theorem to practice offline. It includes additional chapter-level practice questions.

Kinetic and Potential Energy

Subtopic

Kinetic and Potential Energy under Work, Energy, and Power for Grade 11 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    What is the relation between kinetic energy (KK) and linear momentum (pp) for a body of mass mm?

    A.

    K=fracp22mK = \\frac{p^2}{2m}

    B.

    K=fracp2mK = \\frac{p}{2m}

    C.

    K=2mp2K = 2mp^2

    D.

    K=fracm2p2K = \\frac{m}{2p^2}

  2. 2.

    The work done by the restoring force when a spring is stretched is:

    A.

    Positive

    B.

    Negative

    C.

    Zero

    D.

    Undetermined

  3. 3.

    If the kinetic energy of an object is zero, its linear momentum is:

    A.

    Infinite

    B.

    Zero

    C.

    Positive

    D.

    Negative

Download the worksheet for Work, Energy, and Power - Kinetic and Potential Energy to practice offline. It includes additional chapter-level practice questions.

Conservation of Mechanical Energy

Subtopic

Conservation of Mechanical Energy under Work, Energy, and Power for Grade 11 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which of the following is true for a body performing vertical circular motion at the top-most point?

    A.

    Potential energy is minimum

    B.

    Kinetic energy is maximum

    C.

    Potential energy is maximum

    D.

    Total mechanical energy is zero

  2. 2.

    When a compressed spring is released, its potential energy is converted into:

    A.

    Nuclear energy

    B.

    Kinetic energy

    C.

    Chemical energy

    D.

    Electrical energy

  3. 3.

    The law of conservation of mechanical energy is a specific case of:

    A.

    Newton's First Law

    B.

    The Law of Conservation of Momentum

    C.

    The Law of Conservation of Energy

    D.

    Newton's Third Law

Download the worksheet for Work, Energy, and Power - Conservation of Mechanical Energy to practice offline. It includes additional chapter-level practice questions.

Elastic and Inelastic Collisions

Subtopic

Elastic and Inelastic Collisions under Work, Energy, and Power for Grade 11 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which of the following remains constant in an isolated system during an inelastic collision?

    A.

    Total Kinetic Energy

    B.

    Total Linear Momentum

    C.

    Total Mechanical Energy

    D.

    Both Kinetic Energy and Momentum

  2. 2.

    If the kinetic energy of a system increases after a collision (like an explosion), it is sometimes called a ____________ collision.

    A.

    Elastic

    B.

    Inelastic

    C.

    Super-elastic

    D.

    Perfect

  3. 3.

    During a collision, the internal forces are usually ____________ the external forces.

    A.

    Much larger than

    B.

    Much smaller than

    C.

    Equal to

    D.

    Negligible compared to

Download the worksheet for Work, Energy, and Power - Elastic and Inelastic Collisions to practice offline. It includes additional chapter-level practice questions.

Work, Energy, and Power - Class 11 Physics (CBSE) | Krit.club