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11th Standard English Medium Physics Subject Laws of Motion Book Back 1 Mark Questions with Solution Part - II

11th Standard

    Reg.No. :
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Physics

Time : 00:30:00 Hrs
Total Marks : 5

    Part I

    5 x 1 = 5

  1. An object of mass m held against a vertical wall by applying horizontal force F as shown in the figure.The minimum value of the force F is

    (a)

    Less than mg

    (b)

    Equal to mg

    (c)

    Greater than mg

    (d)

    Cannot determine

  2. A book is at rest on the table which exerts a normal force on the book. If this force is considered as reaction force, what is the action force according to Newton's third law?

    (a)

    Gravitational force exerted by Earth on the book

    (b)

    Gravitational force exerted by the book on Earth

    (c)

    Normal force exerted by the book on the table

    (d)

    None of the above

  3. Choose appropriate free body diagram for the particle experiencing net acceleration along negative y direction. (Each arrow mark represents the force acting on the system).

    (a)

    (b)

    (c)

    (d)

  4. Two blocks of masses m and 2m are placed on a smooth horizontal surface as shown. In the first case only a force F1 is applied from the left. Later only a force F2 is applied from the right. If the force acting at the interface of the two blocks in the two cases is same, then F1 :F2 is

    (a)

    1:1

    (b)

    1:2

    (c)

    2:1

    (d)

    1:3

  5. An object of mass m begins to move on the plane inclined at an angle θ. The coefficient of static friction of inclined surface is μs. The maximum static friction experienced by the mass is

    (a)

    mg

    (b)

    μs mg

    (c)

    μs mg sin ፀ

    (d)

    μs mg cos ፀ

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