EBSU-PHY 191 Past Questions and Answers

Share With Friends
  1. What is the primary purpose of a vernier caliper?
    a) To measure mass
    b) To measure length with high precision
    c) To measure temperature
    d) To measure volume
    Answer: b) To measure length with high precision
  2. Which instrument is used to measure electrical current?
    a) Voltmeter
    b) Ammeter
    c) Ohmmeter
    d) Multimeter
    Answer: b) Ammeter
  3. What is the principle behind the use of a barometer?
    a) Measuring temperature changes
    b) Measuring atmospheric pressure
    c) Measuring humidity levels
    d) Measuring wind speed
    Answer: b) Measuring atmospheric pressure
  4. In an experiment measuring the acceleration due to gravity, which method is commonly used?
    a) Measuring time taken for a ball to roll down a ramp
    b) Dropping an object and timing its fall
    c) Using a pendulum
    d) All of the above
    Answer: d) All of the above
  5. What type of energy is measured with a spring scale?
    a) Kinetic energy
    b) Gravitational potential energy
    c) Elastic potential energy
    d) Thermal energy
    Answer: c) Elastic potential energy
  6. Which law explains the relationship between pressure and volume of a gas?
    a) Newton’s First Law
    b) Charles’s Law
    c) Boyle’s Law
    d) Ohm’s Law
    Answer: c) Boyle’s Law
  7. What does a power meter measure?
    a) Voltage
    b) Current
    c) Power
    d) Resistance
    Answer: c) Power
  8. What is the unit of force in the International System of Units (SI)?
    a) Joule
    b) Newton
    c) Pascal
    d) Watt
    Answer: b) Newton
  9. Which device is used to measure the angle of an inclined plane?
    a) Protractor
    b) Clinometer
    c) Compass
    d) Level
    Answer: b) Clinometer
  10. What is the purpose of a stopwatch in physics experiments?
    a) To measure mass
    b) To measure time intervals
    c) To measure temperature
    d) To measure distance
    Answer: b) To measure time intervals
  11. In an experiment to determine specific heat capacity, what is the main variable measured?
    a) Temperature change
    b) Volume
    c) Pressure
    d) Mass of the substance
    Answer: a) Temperature change
  12. What does the term “resonance” refer to in a physics experiment?
    a) The absorption of sound waves
    b) The amplification of sound at certain frequencies
    c) The reflection of light waves
    d) The dissipation of energy
    Answer: b) The amplification of sound at certain frequencies
  13. Which law states that the total energy in a closed system remains constant?
    a) Newton’s Second Law
    b) Conservation of Energy
    c) Hooke’s Law
    d) Ohm’s Law
    Answer: b) Conservation of Energy
  14. What is the primary function of a resistor in an electric circuit?
    a) To measure current
    b) To provide resistance to current flow
    c) To store electrical energy
    d) To convert AC to DC
    Answer: b) To provide resistance to current flow
  15. What type of wave is sound?
    a) Longitudinal wave
    b) Transverse wave
    c) Electromagnetic wave
    d) Surface wave
    Answer: a) Longitudinal wave
  16. What does a photometer measure?
    a) Light intensity
    b) Electrical current
    c) Temperature
    d) Pressure
    Answer: a) Light intensity
  17. In an experiment measuring the density of an object, which of the following is calculated?
    a) Volume and mass
    b) Length and time
    c) Force and acceleration
    d) Pressure and temperature
    Answer: a) Volume and mass
  18. Which device is commonly used to measure voltage in a circuit?
    a) Ammeter
    b) Voltmeter
    c) Multimeter
    d) Ohmmeter
    Answer: b) Voltmeter
  19. What is the concept of “centripetal force”?
    a) Force acting on an object in free fall
    b) Force required to keep an object moving in a circular path
    c) Force opposing motion
    d) Force resulting from gravity
    Answer: b) Force required to keep an object moving in a circular path
  20. What type of energy is associated with the motion of an object?
    a) Potential energy
    b) Kinetic energy
    c) Thermal energy
    d) Chemical energy
    Answer: b) Kinetic energy
  21. What is the primary purpose of a heat exchanger in an experiment?
    a) To measure temperature changes
    b) To transfer heat between fluids
    c) To mix different substances
    d) To generate electricity
    Answer: b) To transfer heat between fluids
  22. Which of the following is used to measure temperature?
    a) Manometer
    b) Barometer
    c) Thermometer
    d) Calorimeter
    Answer: c) Thermometer
  23. What is the effect of increasing the resistance in a circuit while keeping the voltage constant?
    a) Current increases
    b) Current decreases
    c) Voltage decreases
    d) Power increases
    Answer: b) Current decreases
  24. What is the purpose of a friction block in physics experiments?
    a) To create motion
    b) To reduce friction
    c) To measure force
    d) To study motion on surfaces
    Answer: d) To study motion on surfaces
  25. Which principle is demonstrated by a pendulum?
    a) Conservation of mass
    b) Conservation of energy
    c) Newton’s Third Law
    d) Bernoulli’s Principle
    Answer: b) Conservation of energy
  26. What is the formula for calculating work done?
    a) Force × Distance
    b) Mass × Acceleration
    c) Power × Time
    d) Energy × Time
    Answer: a) Force × Distance
  27. What does the term “frequency” refer to in wave mechanics?
    a) The speed of the wave
    b) The distance between wave crests
    c) The number of cycles per unit time
    d) The amplitude of the wave
    Answer: c) The number of cycles per unit time
  28. What is the relationship between voltage, current, and resistance known as?
    a) Newton’s Law
    b) Kirchhoff’s Law
    c) Ohm’s Law
    d) Faraday’s Law
    Answer: c) Ohm’s Law
  29. Which instrument is used to measure the speed of an object?
    a) Stopwatch
    b) Speedometer
    c) Tachometer
    d) Anemometer
    Answer: b) Speedometer
  30. What is the purpose of a galvanometer in an experiment?
    a) To measure potential difference
    b) To measure current
    c) To measure resistance
    d) To measure frequency
    Answer: b) To measure current
  31. What happens to the frequency of a wave if its wavelength increases while the wave speed remains constant?
    a) Frequency increases
    b) Frequency decreases
    c) Frequency remains the same
    d) It becomes zero
    Answer: b) Frequency decreases
  32. Which law relates the pressure and volume of a gas at constant temperature?
    a) Charles’s Law
    b) Boyle’s Law
    c) Avogadro’s Law
    d) Ideal Gas Law
    Answer: b) Boyle’s Law
  33. What type of lens is used to focus light rays?
    a) Diverging lens
    b) Converging lens
    c) Flat lens
    d) Cylindrical lens
    Answer: b) Converging lens
  34. What does the term “momentum” refer to in physics?
    a) The energy of an object at rest
    b) The mass of an object times its velocity
    c) The force acting on an object
    d) The speed of an object
    Answer: b) The mass of an object times its velocity
  35. In a simple circuit, what happens if one component fails?
    a) The circuit continues to function
    b) The circuit may still function depending on the configuration
    c) The circuit completely shuts down
    d) The current increases
    Answer: c) The circuit completely shuts down
  36. What is the purpose of a pulley in a physics experiment?
    a) To measure weight
    b) To change the direction of force
    c) To lift objects with less effort
    d) All of the above
    Answer: d) All of the above
  37. What is the standard unit of pressure in the SI system?
    a) Pascal
    b) Bar
    c) Atmosphere
    d) Torr
    Answer: a) Pascal
  38. What is a common method to determine the density of an irregular object?
    a) Measuring its mass only
    b) Submerging it in water and measuring the displaced water
    c) Calculating its volume using its dimensions
    d) Measuring its temperature
    Answer: b) Submerging it in water and measuring the displaced water
  39. What does a capacitor do in a circuit?
    a) Stores electrical energy
    b) Provides resistance
    c) Converts AC to DC
    d) Measures voltage
    Answer: a) Stores electrical energy
  40. Which phenomenon explains why a straw appears bent in water?
    a) Reflection
    b) Refraction
    c) Diffraction
    d) Dispersion
    Answer: b) Refraction
  41. What is the purpose of a digital oscilloscope?
    a) To measure temperature
    b) To visualize electrical signals
    c) To measure resistance
    d) To calculate energy
    Answer: b) To visualize electrical signals
  42. What happens to the pressure of a gas when its volume decreases at constant temperature?
    a) Pressure increases
    b) Pressure decreases
    c) Pressure remains the same
    d) Pressure fluctuates
    Answer: a) Pressure increases
  43. In a pendulum experiment, what variable is typically measured to determine the effect of length on period?
    a) Length of the string
    b) Mass of the bob
    c) Angle of release
    d) Speed of the bob
    Answer: a) Length of the string
  44. What is the function of a fuse in an electrical circuit?
    a) To increase voltage
    b) To limit current flow
    c) To measure resistance
    d) To protect against overload
    Answer: d) To protect against overload
  45. What type of energy transformation occurs in a hydroelectric power plant?
    a) Mechanical to electrical
    b) Electrical to thermal
    c) Chemical to mechanical
    d) Nuclear to electrical
    Answer: a) Mechanical to electrical
  46. Which principle explains how airplanes generate lift?
    a) Bernoulli’s Principle
    b) Archimedes’ Principle
    c) Newton’s Third Law
    d) Pascal’s Principle
    Answer: a) Bernoulli’s Principle
  47. What is the purpose of using a sound level meter?
    a) To measure frequency of sound
    b) To measure sound intensity
    c) To measure speed of sound
    d) To measure sound quality
    Answer: b) To measure sound intensity
  48. What happens to the resistance of a wire if its length is doubled?
    a) Resistance remains the same
    b) Resistance doubles
    c) Resistance decreases
    d) Resistance quadruples
    Answer: b) Resistance doubles
  49. What is the primary cause of friction in motion?
    a) Weight of the object
    b) Surface roughness
    c) Air resistance
    d) Temperature
    Answer: b) Surface roughness
  50. In an electrical circuit, what does the term “short circuit” refer to?
    a) A break in the circuit
    b) A low-resistance connection between two points
    c) A high-resistance connection
    d) A circuit with multiple pathways
    Answer: b) A low-resistance connection between two points

Leave a Reply

Your email address will not be published. Required fields are marked *

error: Emmy is Sorry Bruh !!