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A - Level
PHYSICS
Paper 2 May 2024
Section 6 - 8 EXAM GUIDE
QNS & ANS
- A car accelerates uniformly from rest to 20 m/s in 5 seconds. What is the magnitude of its acceleration? A) 2 m/s² B) 4 m/s² C) 5 m/s² D) 10 m/s² Correct Answer: B) 4 m/s²
- Which of the following is not a scalar quantity? A) Speed B) Velocity C) Distance D) Temperature Correct Answer: B) Velocity
- The first law of thermodynamics is a restatement of the conservation of: A) Momentum B) Energy C) Mass D) Charge Correct Answer: B) Energy
- A satellite in orbit around Earth experiences a centripetal
force. What provides this force? A) Earth's magnetic field B) Solar radiation pressure C) Gravity D) Atmospheric drag Correct Answer: C) Gravity
- In a p-V diagram, an isothermal process appears as: A) A horizontal line B) A vertical line C) A straight line with a positive slope D) A hyperbola Correct Answer: D) A hyperbola
- The electric field strength at a point in space is defined as: A) The force experienced by a unit positive charge B) The potential energy of a unit positive charge C) The potential difference across a unit distance D) The force per unit distance on a positive charge Correct Answer: A) The force experienced by a unit positive charge
- Which particle is responsible for mediating the strong nuclear force? A) Proton B) Neutron C) Electron D) Gluon Correct Answer: D) Gluon
- The half-life of a radioactive isotope is the time taken for: A) The activity to fall to half its initial value B) The number of undecayed nuclei to halve C) The mass to reduce by one quarter D) Both A and B Correct Answer: D) Both A and B
- A heat engine operates between two reservoirs at 600 K and 300 K. What is the maximum possible efficiency of the engine? A) 50% B) 100% C) 75%
A) Increase the internal energy of the gas B) Perform external work by the gas C) Maintain the temperature of the gas D) Create a phase change in the gas Correct Answer: A) Increase the internal energy of the gas
- A car is traveling at a constant speed around a curved road. Which of the following statements about the car's motion is correct? A. The car is experiencing a centripetal force directed towards the inside of the curve. B. The car is experiencing a centrifugal force directed outwards from the inside of the curve. C. The car is not experiencing any forces. D. The car is experiencing a force directed perpendicular to the curve. Correct Answer: A. The car is experiencing a centripetal force directed towards the inside of the curve.
- When a ball is thrown upwards into the air, at what point is its potential energy at a maximum? A. At the highest point of its trajectory. B. Just before it is thrown. C. At the midpoint of its trajectory. D. Just after it is thrown. Correct Answer: D. Just after it is thrown.
- Which of the following best describes the relationship between temperature and pressure of a gas in a closed container? A. Temperature and pressure are directly proportional. B. Temperature and pressure are inversely proportional. C. Temperature has no effect on pressure. D. Pressure has no effect on temperature. Correct Answer: A. Temperature and pressure are directly proportional.
- In a parallel plate capacitor, increasing the distance between the plates will:
A. Decrease the capacitance. B. Increase the capacitance. C. Have no effect on the capacitance. D. Increase the charge on the plates. Correct Answer: A. Decrease the capacitance.
- Which of the following correctly describes Ohm's Law? A. V = IR B. I = VR C. R = VI D. I = V/R Correct Answer: D. I = V/R
- Which of the following is a unit of power? A. Watt B. Ampere C. Joule D. Volt Correct Answer: A. Watt
- Which of the following processes does not involve a change in the internal energy of a system? A. Combustion B. Boiling C. Expansion D. Contraction Correct Answer: C. Expansion
- The rate at which thermal energy is transferred through a material is known as: A. Heat capacity B. Conduction C. Insulation D. Thermal conductivity Correct Answer: B. Conduction
- In a nuclear fission reaction, the nucleus of an atom splits
Correct Answer: A. Inverse square law
- A charged particle experiences a force when placed in an electric field. Which of the following properties does the force depend on? A. Charge on the particle B. Mass of the particle C. Speed of the particle D. Shape of the particle Correct Answer: A. Charge on the particle
- Which of the following best describes a black body radiator? A. An object that absorbs all incident radiation B. An object that emits radiation at a constant rate C. An object that reflects all incident radiation D. An object that does not emit any radiation Correct Answer: A. An object that absorbs all incident radiation
- What is the SI unit of magnetic field strength? A. Ohm B. Tesla C. Weber D. Henry Correct Answer: B. Tesla
- When a current-carrying wire is placed in a magnetic field, which of the following effects occurs? A. The wire becomes superconductive. B. The wire experiences a force in a direction perpendicular to both the current and the field. C. The wire emits light. D. The wire becomes electrically neutral. Correct Answer: B. The wire experiences a force in a direction perpendicular to both the current and the field. 1 8. In a transformer, if there are more turns on the primary coil than on the secondary coil, what happens to the voltage in the
secondary coil? A. It increases B. It decreases C. It remains the same D. It oscillates Correct Answer: A. It increases
- Which of the following processes converts mass into energy? A. Nuclear fusion B. Nuclear fission C. Radioactive decay D. Chemical reaction Correct Answer: A. Nuclear fusion
- What phenomenon occurs when waves overlap and produce a new wave with larger amplitude? A. Reflection B. Refraction C. Diffraction D. Interference Correct Answer: D. Interference
- Which of the following is a unit of electric charge? A. Volts B. Coulombs C. Amperes D. Ohms Correct Answer: B. Coulombs
- The work done on an object as it moves through a distance is equal to: A. The distance multiplied by the force B. The force multiplied by the displacement C. The force divided by the distance D. The force multiplied by the velocity Correct Answer: B. The force multiplied by the displacement
D. Newton-meters Correct Answer: B. Radians per second
- Which of the following is true about the law of conservation of angular momentum? A. The total angular momentum of a system remains constant when no external torque acts on it. B. The angular momentum of a system always decreases with time. C. The angular momentum of a rotating object depends on its mass. D. The angular momentum of a system is always zero. Correct Answer: A. The total angular momentum of a system remains constant when no external torque acts on it.
- An object is placed at the focal point of a converging lens. What type of image is formed? A. Real and inverted B. Virtual and upright C. Real and upright D. Virtual and inverted Correct Answer: B. Virtual and upright
- Which of the following best describes a superconductor? A. A material that has zero resistance to current flow B. A material that reflects all incident radiation C. A material that has infinite resistance to current flow D. A material that absorbs all incident radiation Correct Answer: A. A material that has zero resistance to current flow
- The process of heat transfer through the emission of electromagnetic waves is known as: A. Conduction B. Convection C. Radiation D. Insulation
Correct Answer: C. Radiation
- A metal rod is heated at one end. Which of the following types of heat transfer is responsible for heating the other end of the rod? A. Conduction B. Convection C. Radiation D. Insulation Correct Answer: A. Conduction
- A material that decreases the rate of heat transfer is known as: A. Insulator B. Conductor C. Radiator D. Capacitor Correct Answer: A. Insulator
- The process of energy transfer through the movement of fluids or gases is known as: A. Conduction B. Convection C. Radiation D. Insulation Correct Answer: B. Convection
- The amount of energy required to raise the temperature of one kilogram of a substance by one degree Celsius is known as: A. Specific heat capacity B. Latent heat C. Heat of fusion D. Heat of vaporization Correct Answer: A. Specific heat capacity
- What is the SI unit of specific latent heat? A. J/kg
Which of the following is an example of a conservative force? A) Friction B) Gravity C) Air resistance D) Tension in a rope Correct Answer: B) Gravity In which of the following scenarios is the Law of Conservation of Energy violated? A) A ball rolling down a hill B) A pendulum swinging back and forth C) A car accelerating on a straight road D) A spring compressed and then released Correct Answer: C) A car accelerating on a straight road What is the unit of measurement for electric field strength? A) Newtons B) Volts per meter C) Coulombs D) Watts Correct Answer: B) Volts per meter Which of the following statements is true about magnetic fields? A) Magnetic field lines always form closed loops B) Magnetic field lines only point towards the north pole C) Magnetic field lines can never intersect D) Magnetic field lines are always parallel to each other Correct Answer: A) Magnetic field lines always form closed loops When an electric current flows through a wire, which of the following is NOT true? A) A magnetic field is produced around the wire B) The direction of the magnetic field is determined by the right-hand rule C) The strength of the magnetic field is inversely proportional to the current D) The magnetic field is strongest closer to the wire Correct Answer: C) The strength of the magnetic field is inversely proportional to the current
What is the process by which a heavy nucleus splits into two or more lighter nuclei called? A) Nuclear fusion B) Nuclear fission C) Radioactive decay D) Alpha decay Correct Answer: B) Nuclear fission Which of the following particles is NOT found in an atomic nucleus? A) Proton B) Electron C) Neutron D) Positron Correct Answer: B) Electron What is the term for the time required for half of a radioactive substance to decay? A) Decay constant B) Half-life C) Radioactive period D) Decay rate Correct Answer: B) Half-life In a nuclear reaction, which quantity must be conserved? A) Energy B) Mass C) Charge D) Momentum Correct Answer: B) Mass When an object is in equilibrium, which of the following statements is true? A) The net force on the object is zero B) The object is at rest C) The object's velocity is constant D) All of the above Correct Answer: D) All of the above Which of the following is an example of a non-conservative force? A) Spring force
Correct Answer: A) Sublimation Which of the following is NOT a method of heat transfer? A) Conduction B) Convection C) Radiation D) Refraction Correct Answer: D) Refraction
