Q.91)-According to the second Law of motion, for a given force, acceleration is inversely proportional to the …of an object.
- Density
- Volume
- Force
- Mass
Q.92)-The force of friction between two surface will increase if;
- A layer of lubricant is kept between the two surfaces
- The two surfaces are pressed harder
- Air gap is created between the two surfaces
- Irregulalrities on both the surfaces are removed
Q.93)-For an object, the state of rest is considered to be the state of……….speed.
- Increasing
- Decreasing
- Inverse
- Zero
Q.94)-A ball rolling along the ground gradually slows down and finally comes to rest is due to ……….
- Friction
- Magnetic force
- Electrostatic force
- Muscular force
Q.95)-The motion of a freely falling boy is an example of……..motion
- Uniformly accelerated
- Non-uniformly accelerated
- Constant velocity
- Constant speed
Q.96)-If the force applied on the object is in the direction of its motion, the speed of the object ………
- Increases
- Stops
- Decreases
- No effect
Q.97)-The frictional force exerted by fluids is also called…
- Drag
- Buoyancy
- Upthrust
- Convection
Q.98)-During uniform motion of an object along a straight line, the……..remains constant with time.
- Time
- Velocity
- Acceleration
- Distance
Q.99)-Friction is caused by the ………on the two surfaces in contact.
- Irregularities
- Smoothness
- Densities
- Gaps