Mock Test

Exam: BPSC Subject: General Science Topic: Physics

Total Questions: 20

Q1. The opposition to the flow of electric current in a conductor is called:

Conductance Resistance Capacitance Inductance
Q2. Why is mercury used in thermometers?

It has a very low coefficient of expansion. It freezes at a very low temperature. It has a high coefficient of expansion and wets glass. It is very dense.
Q3. What is the ground state energy of a particle in an infinite one-dimensional potential well of length L?

0 ħ²π² / 2mL² ħ²π² / mL² ħ²π² / 4mL²
Q4. The impedance (Z) of a series AC circuit containing resistance (R) and inductive reactance (XL) is given by:

Z = R + XL Z = √(R² - XL²) Z = R - XL Z = √(R² + XL²)
Q5. A material that allows electric charge to flow easily is called:

Insulator Conductor Semiconductor Resistor
Q6. Consider a uniform cubical block of side length L. If it is heated by $\Delta T$, and its coefficient of linear expansion is $\alpha$, the percentage increase in its volume is approximately:

$\alpha \Delta T \times 100 \%$ $3\alpha \Delta T \times 100 \%$ $\gamma \Delta T \times 100 \%$ where $\gamma = \alpha$ $L^3 \alpha \Delta T \times 100 \%$
Q7. Like charges ____ each other.

Attract Repel Neither attract nor repel Combine
Q8. The SI unit of thermal conductivity is:

W/m·K W·m/K J/m·K J·m/K
Q9. Which of the following is NOT a fundamental boson?

Photon Gluon Electron Higgs boson
Q10. The thermos flask is designed to minimize heat transfer by:

Conduction only Convection only Radiation only All three methods
Q11. What is the phenomenon responsible for the iridescent colors observed in a peacock's feather?

Interference Diffraction Scattering Polarization
Q12. The process by which light is emitted from a star's surface due to its high temperature is called:

Phosphorescence Fluorescence Incandescence Bioluminescence
Q13. In a DC circuit, the impedance of a capacitor is 1/(jωC). For DC, what is the impedance of a capacitor?

0 ∞ 1/C jC
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. The primary method of heat loss from a human body in a cold environment is:

Conduction Convection Radiation Evaporation
Q16. If 10 Coulombs of charge flows in 0.5 seconds, the current is:

5 Amperes 10 Amperes 20 Amperes 0.05 Amperes
Q17. The photoelectric current is directly proportional to:

The frequency of incident light. The intensity of incident light. The stopping potential. The work function of the metal.
Q18. Which of the following is a fundamental force in nature described by modern physics?

Friction Gravity Magnetic Force Tension
Q19. In an AC circuit, the impedance (Z) of a series RL circuit is given by:

Z = R + jX_L Z = R - jX_L Z = sqrt(R^2 + X_L^2) Z = R * X_L
Q20. What is the name of our home galaxy?

Andromeda Triangulum Milky Way Sombrero

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