Class 10 Spring test

Which of the following is the action at a distance?

• Stretch a rubber band

• Kicking a ball

• Falling of a ball

• Pulling a toy car

The quantity indicated by the slope of the graph is

• Work

• Force

• Power

• Energy

The resultant force acting on the body in the figure is

• 1300 N

• 1900 N

• 500 N

• 0 N

Racing cars are made low and flat to increase the stability because

• Centre of gravity is lowered

• Centre of gravity is raised

• Area of base is increased

• Area of base is decreased

Which of the following account is NOT true about the paraglide when it has attained the maximum velocity?

• Resultant force on it is zero

• Drag force is equal to the weight of the body

• The drag force is equal to zero

• The maximum velocity is called as terminal velocity

Which of the following is the best description of the figure aside so as to lift the stone easily?

• Applying the effort at position A would require less effort to lift the stone as moment of force is increased.

• Applying the effort at position C would require less effort to lift the stone as moment of force is decreased.

• Applying the effort at position A would require more effort to lift the stone as moment of force is increased.

• Applying the effort at position C would require more effort to lift the stone as moment of force is increased.

A 500g mass of book is lifted to a height of 10m above the ground. How much potential energy is possessed by the book?

• 50 J

• 500 J

• 5000 J

• 50000 J

A machine does 3600J of work in 1 minutes. What could be the power developed in the machine?

• 6 W

• 60 W

• 600 W

• 6000 W

Which of the following is TRUE about the type of equilibrium?

• Figure A is stable equilibrium

• Figure B is unstable equilibrium

• Figure C is neutral equilibrium

• All of the above are TRUE

If both masses are doubled and distance of separation is also doubled, then the gravitational force will be

• Remain same

• Doubled

• Tripled

• Quadrupled