Q.21)-The moment of inertia of a body does not depend upon its
  • Axis of rotation
  • Angular velocity
  • Form of mass
  • Distribution of mass
Q.22)-To open a door easily the handle should be fixed
  • Near the hinges
  • Away from mid-point opposite to hinges
  • In the middle
  • None of these
Q.23)-An object covers distance which is directly proportional to the square of the time. Its accelaration is
  • Increasing
  • Decreasing
  • Zero
  • Constant
Q.24)-An object with a constant speed
  • Is not accelerated
  • Might be accelerated
  • Is always accelerated
  • Also has a constant velocity
Q.25)-The average kinetic energy of the molecules of an ideal gas is directly proportional to an ideal gas is directly proportional to
  • Velocity of molecules
  • Mass of molecules
  • Absolute temperature of the gas
  • Temperature of enviroment
Q.26)-Why does a cannon recoil after firing?
  • Conservation of energy
  • Backward thrust of gases produces
  • Newton's third law of motion
  • Newton's first law of motion
Q.27)-Rate of change of momentum is
  • Area
  • Pressure
  • Force
  • Velocity
Q.28)-What is impulse equal to?
  • Change in momentum
  • Change in force
  • Change in velocity
  • Change in acceleration
Q.29)-Jet engine works on the principle of conservation of
  • Heat
  • Mass
  • Linear momentum
  • Angular momentum
Q.30)-Which of the following is not a unit of speed?
  • m/s
  • km/hr
  • m2/hr
  • cm/s