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