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11th Standard Physics English Medium Free Online Test Creative One Mark Questions with Answer Key

11th Standard

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Physics

Time : 00:10:00 Hrs
Total Marks : 10

    Answer all the questions

    10 x 1 = 10
  1. Microscopic group of Physics dealt with the study of ____________.

    (a)

    classical physics

    (b)

    statistical mechanics

    (c)

    fluid mechanics

    (d)

    quantum physics

  2. Retardation means:

    (a)

    decreases with time

    (b)

    increases with time

    (c)

    increases and decreases

    (d)

    decreases and increases

  3. The unit of momentum is

    (a)

    kg m s-1

    (b)

    kg m2 s-2

    (c)

    kg m2 s-1

    (d)

    kg-1 m2 s-1

  4. When is the speed of a moving body doubled?

    (a)

    its acceleration is doubled

    (b)

    its momentum is doubled

    (c)

    its kinetic energy is doubled

    (d)

    its potential energy is doubled

  5. A metal ball of mass 2 kg moving with speed of 36 km/h has a head on collision with a stationary ball of mass 3 kg. If after collision, both the balls move as a single mass, then the loss in K.E. due to collision is

    (a)

    100J

    (b)

    140J

    (c)

    40J

    (d)

    60J

  6. The 10, cation of the centre of mass of a sphere is at:

    (a)

    its top

    (b)

    its bottom

    (c)

    geometric centre

    (d)

    all the above

  7. Three particles, each of mass m gram, are situated at the vertices of an equilateral triangle ABC of side I cm (as shown in the figure). The moment of inertia of the system about a line AX perpendicular to AB and in the plane of ABC, in gram-cm2 units will be

    (a)

    \(\frac { 3 }{ 4 } \)ml2

    (b)

    2 ml2

    (c)

    \(\frac { 5 }{ 4 } \)ml2

    (d)

    \(\frac { 3 }{ 2 } \)ml2

  8. If net force acting on a body is zero, then the body is in

    (a)

    translational equilibrium

    (b)

    rotational equil ibrium

    (c)

    both (c) and (b)

    (d)

    none

  9. A satellite is moving around the Earth with speed v in a circular orbit of radius r. If the orbit radius is decreased by 1% its speed will _______.

    (a)

    increase by 1%

    (b)

    increase by 0.5%

    (c)

    decrease by 1%

    (d)

    decrease by 0.5%

  10. The modulus of rigidity of a liquid is _______.

    (a)

    zero

    (b)

    1

    (c)

    infinite

    (d)

    none of these

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