PES SS 1 PHYSICS (Obj) 2nd Term Exam 2025/2026
  • 1. What is linear momentum?
A) Mass x velocity
B) Force x time
C) Mass x acceleration
D) Velocity / mass
  • 2. A body of mass 2 kg moves with velocity 5 m/s. Its momentum is
A) 7 k gm/s
B) 15 k gm/s
C) 10 k gm/s
D) 2.5 k gm/s
  • 3. When no external force acts on a system, the total momentum
A) Remains constant
B) Increases
C) Becomes zero
D) Decreases
  • 4. Impulse is equal to
A) Workdone
B) Force x distance
C) Mass x velocity
D) Force x time
  • 5. The change in momentum is equal to
A) Velocity
B) Acceleration
C) Force
D) Impulse
  • 6. The S.I unit of energy is
A) Pascal
B) Watt
C) Newton
D) Joule
  • 7. If no movement occurs, work done is
A) Constant
B) Minimum
C) Zero
D) Maximum
  • 8. Which formula is correct for power?
A) P= W x t
B) P= mgh
C) P= F x d
D) P= W/t
  • 9. Kinetic energy depends on
A) Temperature
B) Time
C) Velocity
D) Height
  • 10. Which of the following is potential energy?
A) Moving car
B) Rolling ball
C) Flying bird
D) Water stored in a dam
  • 11. Mechanical energy is
A) Scalar
B) Vector
C) Dimensionless
D) Constant always
  • 12. A machine is used to
A) Destroy energy
B) Reduce mass
C) Increase energy
D) Make work easier
  • 13. Mechanical advantage is
A) Load/ Effort
B) Effort/ Load
C) Distance/ Time
D) Work/ Time
  • 14. Efficiency of a machine is always
A) Zero
B) Less than or equal to 100%
C) Equal to 100%
D) Greater than 100%
  • 15. Which of the following is a simple machine?
A) Car
B) Lever
C) Generator
D) Bicycle
  • 16. Velocity ratio is
A) Load/ Effort
B) Distance moved by effort/ Distance moved by load
C) Work/ Time
D) Effort/ Load
  • 17. The force applied to a machine is called
A) Effort
B) Energy
C) Load
D) Power
  • 18. Efficiency is expressed in
A) Joules
B) Newtons
C) Watts
D) Percentage
  • 19. Which reduces efficiency in machines?
A) Oil
B) Lubrication
C) Friction
D) Smooth surfaces
  • 20. Energy can neither be created nor destroyed but can be
A) Converted
B) Increased
C) Removed
D) Reduced
  • 21. Water freezes at
A) 0 C
B) 273 C
C) 32 C
D) 100 C
  • 22. Convert 0 C to Kelvin
A) 32 K
B) 0 K
C) 100 K
D) 273 K
  • 23. The boiling point of water in Fahrenheit is
A) 180 F
B) 212 F
C) 32 F
D) 100 F
  • 24. Which thermometer is used in hospitals?
A) Laboratory thermometer
B) Clinical thermometer
C) Barometer
D) Digital scale
  • 25. Absolute zero is
A) 0 K
B) 0 C
C) 32 F
D) 100 K
  • 26. Convert 25 C to Kelvin
A) 298 K
B) 273 K
C) 250 K
D) 300 K
  • 27. The difference between ice and steam point in Celsius is
A) 100
B) 180
C) 212
D) 50
  • 28. The instrument used to measure heat is
A) Calorimeter
B) Ammeter
C) Thermometer
D) Barometer
  • 29. Specific heat capacity is the heat required to raise
A) 10 kg by 1 C
B) 1 kg by 10 C
C) 1 kg by 1 C
D) 1 g by 10 C
  • 30. What is the specific heat capacity of water?
A) 2100
B) 5000
C) 4200
D) 3500
  • 31. Which substance has high specific heat capacity?
A) Copper
B) Iron
C) Water
D) Wood
  • 32. Heat flows from
A) Hot to cold
B) Equal temperature
C) Cold to hot
D) Low pressure to high pressure
  • 33. Matter is made up of
A) Tiny particles
B) Light
C) Air
D) Energy
  • 34. Which state has the strongest particle attraction?
A) Plasma
B) Liquid
C) Solid
D) Gas
  • 35. Diffusion is fastest in
A) Solids
B) Liquids
C) All equally
D) Gases
  • 36. Brownian motion shows that particles
A) Are stationary
B) Are large
C) Have no mass
D) Are in motion
  • 37. Which state has no fixed shape and no fixed volume?
A) Ice
B) Liquid
C) Solid
D) Gas
  • 38. Increasing temperature causes particles to
A) Move faster
B) Disappear
C) Shrink
D) Stop moving
  • 39. Which factor does not affect heat energy?
A) Mass
B) Specific heat capacity
C) Temperature change
D) Time
  • 40. The force of attraction between particles in gases is
A) Very weak
B) Moderate
C) Strong
D) Zero
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