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