Intermediate Physics Part 3

  1. A 5 kg object starting at rest, falls to the ground from a height of 10 m. Just before hitting the earth, what will be the K.E.? if the friction force offered by the air is 1 N.?
    480 J
    490 J
    500 J
    None of these
  2. The biggest unit of energy is _ whereas the smallest unit of energy is _ (out of the following)?
    Kilowatt hour, Erg
    Kilowatt hour, eV
    Kilowatt hour, Gram calorie
    watt hour, Erg
  3. The K.E. is 1200 J for a mass 690 kg having momentum _.?
    1286 kgm^2
    12086 kgm^2
    2001 kgm^2
    None of these
  4. The angle between centripetal force and centrifugal force, for a body moving in a circle is?
    90
    180
    45 degree
    None of these
  5. A well known fact is that work done by the centripetal force is zero since speed remains constant during circular motion, what about K.E. during the same circular motion??
    Of course it is zero as well.
    It remains constant
    It does not remains constant.
    None of these
  6. A body of mass 50 kg is standing in a lift. What happens to mass of the body when the lift is going up and is about to stop at 3rd floor??
    Increases
    Decreases
    Remains same
    None of these
  7. If the lift moves upward with a deceleration, having a person standing still in the lift, what will happen to the Real weight of the person??
    Increases
    Decreases
    Remains same
    None of these
  8. The ratio of displacement along diameter of circle and total distance along a semi-circle is:?
    1: π
    π : 1
    1 : 1
    None of these
  9. Bernoulli’s equation was derived in today’s known form, by?
    Daniel Bernoulli
    first wife of Daniel Bernoulli
    second wife of Daniel Bernoulli
    L. Euler
  10. [PPSC 2022] The terms (other than pressure) in Bernoulli equation have the dimension of:?
    Pressure Gradient
    Velocity Gradient
    Modulus of Elasticity
    None of these
  11. Temperature of a gas increases from 10C to 20C, what happens to the viscosity of the gas?
    Increases
    Decreases
    Remains same
    None of these
  12. Terminal velocity does not depends upon?
    Falling time
    Area
    mass
    viscosity
  13. [PPSC 2020, 2022) Bernoulli equation is an expression of:?
    Law of conservation of mass
    Law of conservation of Energy
  14. Moment of inertia of __ will be used while studying Earth’s Orbital Angular momentum??
    Sphere
    Disc
    Hoop
    None of these
  15. A sphere, disk and hoop with same mass and same radius is left on an inclined plane, which of the three will reach the ground first??
    Sphere
    Disc
    Hoop
    None of these
  16. The time period of simple pendulum is 1 sec when displacing at an angle of 1 degree. If the angle is doubled, the period becomes:?
    1 sec
    2 sec
    0.5 sec
    None of these
  17. A tunnel has been dug through the center of the earth and a ball is released in it. the ball will?
    go through the tunnel and reach the other end
    Will stop at the center of the earth
    perform simple harmonic motion
    None of these
  18. For a watch, the time period of the second’s hand is:?
    1 sec
    1 minute
    1 hour
    None of these
  19. The force of gravity above the earth’s surface is proportional to _ and inside the earth it is proportional to __?
    1/r^2, r
    1/r, r
    r, 1/r^2
    r, 1/r
    None of these
  20. Which of the following waves cannot be polarized??
    Radio Waves
    Micro Waves
    Ultrasound
    X Rays
Oplus_0

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