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