- 1. The movement of an object whose vertical motion is altered by the presence of gravity is referred to as___________
A) Motion under gravity
B) Force
C) Gravitational force
D) Motion
- 2. A motor car is uniformly retarded and brought to rest from a velocity of 36km/h in 5secs. Find it's retardation during this period.
A) 2m/s²
B) -7.2m/s²
C) 7.2m/s²
D) -2m/s²
- 3. ____________ is an object/body launch into the air and allowed to move on its own freely under gravity.
A) Gravitational force
B) Projectile
C) Motion
D) Harmonic motion
- 4. The time required for a projectile to return to the same level from which it was projected is called____________
A) Pendulum
B) Projection
C) Maximum height
D) Time of flight
- 5. Which of the following is an application of projectile?
A) Dancing
B) Runny
C) Drawing
D) Warfare
- 6. A quality that has only magnitude but no direction is called_________
A) Scalar quantity
B) Vector quantity
C) Fundamental quantity
D) Derived quantity
- 7. Which of these is not an example of vector quantity?
A) Momentum
B) Velocity
C) Speed
D) Force
- 8. If the resultant displacement is equal to zero
A) None of the the above
B) Force is not applied
C) Work is done
D) Work is not done
- 9. The product of force and the perpendicular distance in the direction of the applied force is_______
A) Work
B) Motion
C) Force
D) Power
- 10. A filled drum of oil of Total mass 150kg rolls down from the floor of a lorry 2m high. Calculate the work done by gravity on the load.
A) 3000j
B) 3j
C) 300kj
D) 30kj
- 11. Which of the following is not a similarity between work and energy?
A) None of the above
B) They are both measured in joules
C) They are denoted by J
D) They are both scalar quantity
- 12. Which of the following is not a similarity between potential and kineticenergy
A) None of the above
B) Energy is due to motion
C) They are forms of mechanical energy
D) They are both measured in joules
- 13. Which of these is not true about power?
A) None of the above
B) Instrument for measurement is wattmeter
C) It is the rate of work done or energy expended
D) It is measured in watts
- 14. Which of these is not true about energy?
A) It is measured in joules
B) Instrument for measurement is velometer
C) It has no exact instrument for measurement
- 15. _________ are instruments for doing the apparently impossible or difficult tasks.
A) None of the above
B) Projectile
C) Machine
D) Equilibrium
- 16. The ratio of load to effort is _________
A) Velocity ratio
B) Efficiency
C) Mechanical advantage
D) Distance moved
- 17. If the fulcrum (F) is in between the load(L) and the effort (E) it is
A) Fourth class lever
B) Second class lever
C) Third class lever
D) Fist class lever
- 18. If the load (L) is in between the fulcrum(F) and the effort (E) it is
A) Second class lever
B) First class lever
C) Third class lever
D) Fourth class lever
- 19. If the effort (E) is in between the load(L) and the fulcrum (F) it is
A) First class lever
B) Fourth class lever
C) Second class lever
D) Third class lever
- 20. A rigid bar which is capable of rotating about a fulcrum is called
A) Wedge
B) Include plane
C) Pulley
D) Lever
|