PES SS 1 Physics (Obj) 3rd Term Exam 2025-2026
  • 1. A fluid is a substance that
A) Has a fixed shape only
B) Cannot be compressed
C) Can flow
D) Has no mass
  • 2. Which of the following is NOT a fluid?
A) Kerosene
B) Water
C) Gas
D) Wood
  • 3. The SI unit of pressure is
A) Joule
B) Pascal
C) Newton
D) Watt
  • 4. Pressure is defined as
A) Force per unit area
B) Mass per unit volume
C) Force × Mass
D) Area × Mass
  • 5. The mathematical expression for pressure is
A) P=A/F
B) P=mV
C) P = F/A
D) P=F×A
  • 6. The instrument used to measure the relative density of liquids is
A) Stopwatch
B) Ammeter
C) Voltmeter
D) Hydrometer
  • 7. The upward force exerted on a body immersed in a fluid is called
A) Tension
B) Momentum
C) Friction
D) Upthrust
  • 8. Archimedes' principle is concerned with
A) Heat transfer
B) Pressure in gases
C) Upthrust in fluids
D) Motion of planets
  • 9. The SI unit of density is
A) kg
B) N/m²
C) g/cm
D) kg/m³
  • 10. Boyle's law states that for a fixed mass of gas at constant temperature, the pressure is
A) Equal to the volume
B) Inversely proportional to the volume
C) Independent of the volume
D) Directly proportional to the volume
  • 11. Standard atmospheric pressure is
A) 76mmHg
B) 760cmHg
C) 76Pa
D) 760mmHg
  • 12. Charles' law states that the volume of a fixed mass of gas is directly proportional to its
A) Absolute temperature
B) Density
C) Mass
D) Pressure
  • 13. To convert Celsius to Kelvin, we
A) Divide by 273
B) Multiply by 273
C) Subtract 273
D) Add 273
  • 14. Which of the following is NOT a gas law?
A) Boyle's law
B) Ohm's law
C) Charles' law
D) Pressure law
  • 15. Which principle explains why objects float?
A) Hooke's Law
B) Ohm's Law
C) Archimedes' Principle
D) Newton's First Law
  • 16. In simple harmonic motion, the restoring force is always directed
A) Upward only
B) Away from the equilibrium position
C) Downward only
D) Towards the equilibrium position
  • 17. The maximum displacement from the equilibrium position is known as the
A) Wavelength
B) Period
C) Amplitude
D) Frequency
  • 18. The time taken for one complete oscillation is called the
A) Period
B) Amplitude
C) Frequency
D) Velocity
  • 19. The SI unit of frequency is
A) Hertz
B) Newton
C) Second
D) Metre
  • 20. Which of the following performs simple harmonic motion?
A) A spinning wheel
B) A simple pendulum
C) A moving car
D) A freely falling stone
  • 21. The SI unit of period is
A) Second
B) Joule
C) Watt
D) Hertz
  • 22. If a body makes 20 oscillations in 10 seconds, its frequency is
A) 0.5 Hz
B) 10 Hz
C) 20 Hz
D) 2.0 Hz
  • 23. A projectile is a body that Is thrown into the air and
A) rotates about a fixed axis
B) moves under gravity alone
C) moves only vertically
D) moves with constant speed in a straight line
  • 24. The path followed by a projectile is
A) Elliptical
B) Circular
C) Straight
D) Parabolic
  • 25. The horizontal distance covered by a projectile is called the
A) Period
B) Range
C) Displacement
D) Height
  • 26. Which force acts on a projectile after it has been launched (neglecting air resistance)?
A) Friction
B) Tension
C) Gravitational force
D) Magnetic force
  • 27. Which of the following is an example of projectile motion?
A) A rotating fan
B) A train moving on a track
C) A stone thrown into the air
D) A moving escalator
  • 28. Which of the following factors is ignored in the study of ideal projectile motion?
A) Air resistance
B) Initial velocity
C) Angle of projection
D) Gravity
  • 29. The SI unit of acceleration due to gravity is
A) m/s²
B) m/s
C) N/kg
D) kg/m³
  • 30. Which statement about projectile motion is correct?
A) Gravity affects only the horizontal motion.
B) Gravity affects only the vertical motion.
C) The horizontal velocity decreases continuously.
D) The vertical velocity remains constant.
  • 31. Flotation is the ability of a body to
A) Sink in a liquid
B) Evaporate in water
C) Dissolve in a liquid
D) Float on or in a liquid
  • 32. According to the law of flotation, a floating body
A) Displaces a weight of liquid equal to its own weight
B) Has no upthrust acting on it
C) Has no weight
D) Displaces its own volume of liquid
  • 33. When a floating object is placed in a denser liquid, it will
A) Float higher
B) Sink completely
C) Remain at the same level
D) Float lower
  • 34. The General Gas Law combines
A) Boyle's law, Charles' law, and the Pressure law
B) Newton's laws only
C) Boyle's law and Hooke's law
D) Ohm's law and Charles' law
  • 35. Which of the following quantities is NOT included in the General Gas Law?
A) Volume
B) Density
C) Temperature
D) Pressure
  • 36. The Pressure Law states that for a fixed mass of gas at constant volume, pressure is directly proportional to
A) Absolute temperature
B) Volume
C) Density
D) Mass
  • 37. The statement "equal volumes of gases contain equal numbers of molecules at the same temperature and pressure" is known as
A) Charles' law
B) Boyle's law
C) Avogadro's law
D) Pressure law
  • 38. Which of the following is NOT a variable in the ideal gas equation?
A) Volume
B) Temperature
C) Pressure
D) Resistance
  • 39. A gas occupies 100 cm³ at 300 K. If heated to 600 K at constant pressure, its volume becomes
A) 300 cm³
B) 50 cm³
C) 200 cm³
D) 100 cm³
  • 40. Which quantity remains constant in Avogadro's law?
A) Pressure only
B) Pressure and Temperature
C) Volume only
D) Temperature only
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