Mock Test

Exam: BPSC Subject: General Science Topic: Physics

Total Questions: 20

Q1. Which of the following statements is a consequence of the Second Law of Thermodynamics?

Energy can be created from nothing. It is impossible to convert heat completely into work in a cyclic process. Absolute zero temperature is unattainable. Entropy is always conserved.
Q2. In a cyclic process, the net heat absorbed by the system is equal to the net work done by the system. This statement is a consequence of which law of thermodynamics?

Zeroth Law First Law Second Law Third Law
Q3. What is the electric charge of a proton?

Negative Neutral Positive Zero
Q4. Thermal equilibrium is a consequence of which fundamental law of thermodynamics?

First Law Second Law Zeroth Law Third Law
Q5. The uncertainty principle in wave mechanics states that it's impossible to simultaneously know with perfect accuracy both:

Energy and frequency Wavelength and velocity Position and momentum Amplitude and period
Q6. The phenomenon of a fluid lifting an object due to pressure difference is called:

Drag Lift Thrust Momentum
Q7. A positive charge creates an electric field that points:

Inward Outward Tangential Zero
Q8. In circular motion, the velocity vector is always perpendicular to the:

centripetal force radius vector tangent angular velocity
Q9. General Relativity deals with the relationship between gravity and what?

Magnetism Electricity Spacetime Quantum mechanics
Q10. In the phenomenon of diffraction, the angular width of the central maximum is inversely proportional to:

Wavelength of light Slit width Distance of the screen from the slit Refractive index of the medium
Q11. In a DC circuit, what happens to the current through each component in a parallel combination?

It is the same through all components It adds up to the total current It is inversely proportional to the resistance It is directly proportional to the resistance
Q12. A particle executes SHM. Its velocity is $v_1$ at displacement $x_1$ and $v_2$ at displacement $x_2$. What is the angular frequency $\omega$?

$\| \frac{v_1^2 - v_2^2}{x_2^2 - x_1^2} \|^{1/2}$ $\| \frac{v_1^2 + v_2^2}{x_1^2 + x_2^2} \|^{1/2}$ $\| \frac{v_1^2 - v_2^2}{x_1^2 - x_2^2} \|^{1/2}$ $\| \frac{v_1^2 + v_2^2}{x_2^2 - x_1^2} \|^{1/2}$
Q13. The magnetic field lines are always drawn such that the tangent to the line at any point gives the direction of the:

Magnetic force Magnetic pole Magnetic field Electric current
Q14. Which statement is true about thermal expansion of solids?

It is dependent on the shape of the solid. It is independent of the material. It is proportional to the change in temperature. It is inversely proportional to the original length.
Q15. A cyclist travels 10 km in 30 minutes. What is her average speed in km/h?

15 km/h 20 km/h 30 km/h 25 km/h
Q16. Radioactivity was discovered by which scientist?

Marie Curie Henri Becquerel Pierre Curie Ernest Rutherford
Q17. When waves meet out of phase, leading to a smaller or zero amplitude, it is called:

Constructive interference Diffraction Polarization Destructive interference
Q18. Two systems, A and B, are in thermal contact. If system A is at 50°C and system B is at 30°C, what will happen to the net energy transfer between them over time in an isolated system?

Net energy will transfer from B to A until their temperatures equalize. Net energy will transfer from A to B until their temperatures equalize. There will be no net energy transfer as their temperatures are different. The rate of energy transfer will be constant and directed from A to B.
Q19. What is the term for a stable, luminous sphere of plasma held together by its own gravity and powered by nuclear fusion?

Planet Moon Star Galaxy
Q20. When a cold object is placed in contact with a hot object, heat energy flows from:

The cold object to the hot object. The hot object to the cold object. There is no heat flow. Both objects transfer heat to each other equally.

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