Mock Test

Exam: BPSC Subject: General Science Topic: Physics

Total Questions: 20

Q1. What is the condition for a system to be in stable equilibrium?

The potential energy is at a minimum. The potential energy is at a maximum. The potential energy is zero. The net force is zero but the potential energy is not at an extremum.
Q2. What force is responsible for holding the nucleus of an atom together?

Electromagnetic Force Weak Nuclear Force Strong Nuclear Force Gravitational Force
Q3. The process by which two light nuclei combine to form a heavier nucleus is called:

Nuclear fission Radioactive decay Nuclear fusion Gamma emission
Q4. The expectation value of an observable in quantum mechanics is calculated using:

The wave function only The operator and the wave function The Hamiltonian operator only The Schrödinger equation only
Q5. A 100 µF capacitor is connected to a 50V DC source through a 1 MΩ resistor. After a long time, what is the charge on the capacitor?

0 C 5 µC 5 mC 5 C
Q6. A stationary electric charge experiences a magnetic force when:

It is in a strong magnetic field It is in a weak magnetic field It is moving It is stationary
Q7. The direction of the magnetic force on a current-carrying wire is determined by:

Right-hand rule Left-hand rule Ampere's law Biot-Savart law
Q8. What is the term for gravitational waves predicted by General Relativity?

Ripples in spacetime Electromagnetic waves Gravitational pulses Quantum fluctuations
Q9. The expectation value of position for a particle described by Ψ(x) is given by:

∫ |Ψ(x)|² dx ∫ x |Ψ(x)|² dx ∫ Ψ*(x) x Ψ(x) dx ∫ Ψ(x) x Ψ*(x) dx
Q10. A meson is composed of:

Three quarks Two quarks A quark and an antiquark Three antiquarks
Q11. Which of the following is a measure of the mass per unit volume of a substance?

Pressure Viscosity Density Momentum
Q12. Which of the following is a form of energy?

Force Work Heat Velocity
Q13. What is a light-year a unit of?

Time Brightness Distance Mass
Q14. In an adiabatic process, what is the heat transfer (Q) between the system and its surroundings?

Q > 0 Q < 0 Q = 0 Q is always positive
Q15. Pair production, the creation of an electron-positron pair from a photon, requires the photon to have a minimum energy equivalent to:

The rest mass energy of an electron The rest mass energy of a proton The combined rest mass energy of an electron and a positron The kinetic energy of an electron
Q16. Which quantum mechanical phenomenon explains the ability of a particle to pass through a potential barrier even if its energy is less than the barrier height?

Quantum tunneling Quantum entanglement Quantum superposition Quantum entanglement
Q17. In the context of nuclear astrophysics, what is the 's-process' and the 'r-process' respectively?

Slow neutron capture forming heavy elements, and rapid neutron capture forming even heavier elements. Rapid neutron capture forming heavy elements, and slow neutron capture forming lighter elements. Slow proton capture forming heavy elements, and rapid proton capture forming radioactive isotopes. Radioactive decay followed by neutron emission, and neutron emission followed by radioactive decay.
Q18. Which of the following is a consequence of the quantization of energy in atomic systems?

Continuous emission spectrum Discrete spectral lines Wave-particle duality Photoelectric effect
Q19. The concept of thermal equilibrium is a consequence of which fundamental principle?

The First Law of Thermodynamics (Conservation of Energy) The Second Law of Thermodynamics (Entropy) The Zeroth Law of Thermodynamics (Transitivity of Thermal Equilibrium) The Third Law of Thermodynamics (Absolute Zero)
Q20. According to Special Relativity, what is constant for all observers, regardless of their motion?

Mass Time The speed of light in a vacuum Length

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