Q.11)-The motion of the wheel of a bull cart while moving on the road is an example of
- Oscillatory and rotatory motion
- Oscillatory and translatory motion
- Translatory and rotatory motion
- Translatory motion only
Q.12)-A tennis ball and a cricket ball with heavy mass throw with same velocity, then to stop the cricket ball we need out of the following
- More force
- Less force
- Equal force
- Infinite force
Q.13)-A cyclist should lean in a circular motion
- Forward
- Backward
- Sidewise towards the center
- Sidewise away from the center
Q.14)-Motion of the body around a circular path is an example of
- Uniform velocity and variable acceleration
- Uniform speed and constant velocity
- Uniform speed and variable velocity
- Uniform speed and variable acceleration
Q.15)-Angle of friction and angle of repose found to be as
- Equal to each other
- Not each to each other
- Propotional to each other
- None of these
Q.16)-Rocket acts on law of conservation of
- Angular momentum
- Mass
- Energy
- Linear momentum
Q.17)-A bullet hits and gets embedded in a solid block resting on a horizontal frictionless table. Which quantity is conserved in this process?
- Momentum and kinetic energy
- Momentum alone
- Kinetic energy alone
- Neither momentum nor kinetic energy
Q.18)-Why the needle of iron swims on water surface when it is kept gently?
- Surface tension
- Density
- Reaction
- Momentum
Q.19)-A boat will not submerge when it displaces water equal to its own
- Volume
- Weight
- Surface area
- Density
Q.20)-An ice block with a piece of lead embeded in it floats in water. It ice melts the water level
- Rises
- Falls
- Remains same
- Falls first and then rises
