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11th Standard Physics English Medium Free Online Test Book Back One Mark Questions

11th Standard

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Physics

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

    Answer all the questions

    10 x 1 = 10
  1. One of the combinations from the fundamental physical constants is \({{hc}\over{G}},\) The unit of this expression is

    (a)

    Kg2

    (b)

    m3

    (c)

    S-1

    (d)

    m

  2. Which one of the following Cartesian coordinate systems is not followed in physics?

    (a)

    (b)

    (c)

    (d)

  3. When a car takes a sudden left turn in the curved road, passengers are pushed towards the right due to

    (a)

    inertia of direction

    (b)

    inertia of motion

    (c)

    inertia of rest

    (d)

    absence of inertia

  4. A uniform force of (2\(\hat { i }\)+\(\hat { j }\)) N acts on a particle of mass 1 kg. The particle displaces from position (3\(\hat { j }\)+\(\hat { k }\)) m to (5\(\hat { i }\)+3\(\hat { j }\)) m. The work done by the force on the particle is

    (a)

    9 J

    (b)

    6 J

    (c)

    10 J

    (d)

    12 J

  5. The center of mass of a system of particles does not depend upon,

    (a)

    position of particles

    (b)

    relative distance between particles

    (c)

    masses of particles

    (d)

    force acting on particle

  6. The linear momentum and position vector of the planet is perpendicular to each other at

    (a)

    perihelion and aphelion

    (b)

    at all points

    (c)

    only at perihelion

    (d)

    no point

  7. Consider two wires X and Y. Th e radius of wire X is 3 times the radius of Y. If they are stretched by the same load then the stress on Y is

    (a)

    equal to that on X

    (b)

    thrice that on X

    (c)

    nine times that on X

    (d)

    Half that on X

  8. In hot summer after a bath, the body’s

    (a)

    internal energy decreases

    (b)

    internal energy increases

    (c)

    heat decreases

    (d)

    no change in internal energy and heat

  9. A particle of mass m is moving with speed u in a direction which makes 60° with respect to x axis. It undergoes elastic collision with the wall. What is the change in momentum in x and y direction?

    (a)

    Δpx = −mu, Δpy = 0

    (b)

    Δpx = −2mu, Δpy = 0

    (c)

    Δpx = 0, Δpy = mu

    (d)

    Δpx = mu, Δpy = 0

  10. In a simple harmonic oscillation, the acceleration against displacement for one complete oscillation will be

    (a)

    an ellipse

    (b)

    a circle

    (c)

    a parabola

    (d)

    a straight line

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