Physics Mock Test | General Science | BPSC

Q1. The phenomenon of 'sea breeze' and 'land breeze' is an example of:

Conduction Radiation Convection Thermonuclear fusion

Q2. In the context of the dual nature of light, a single photon can be considered as:

A continuous electromagnetic wave A localized packet of energy An oscillating electric field only A stream of massless particles with no energy

Q3. The condition for destructive interference for waves of equal amplitude is:

Path difference = nλ Path difference = (n + 1/2)λ Phase difference = nπ Phase difference = (2n + 1)π

Q4. For a system undergoing an irreversible process, the entropy of the universe:

Decreases Remains constant Increases Can increase or decrease

Q5. A bimetallic strip is made of two metals with different coefficients of linear expansion. If the strip is heated, it will bend such that the metal with the higher coefficient of expansion is on the:

Concave side Convex side It will not bend It bends symmetrically

Q6. The gravitational lensing effect, where light from distant objects bends around massive objects, is a direct consequence of:

Newton's law of universal gravitation. Special Relativity. General Relativity's description of spacetime curvature. The wave nature of light.

Q7. A neutral object has:

Only protons Only electrons Equal number of protons and electrons No charged particles

Q8. Water exhibits anomalous expansion between 0°C and 4°C. Which statement is true in this range?

As temperature increases, density decreases. As temperature increases, volume increases. As temperature increases, volume decreases. As temperature increases, volume remains constant.

Q9. A moving coil galvanometer works on the principle of:

Electromagnetic induction Motor effect (force on a current-carrying conductor in a magnetic field) Hall effect Thermoelectric effect

Q10. The Compton effect, where photons scatter off electrons and change wavelength, provides evidence for light's:

Wave nature Particle nature Wave-particle duality Electromagnetic spectrum

Q11. A virtual image can be:

Formed on a screen Projected on a screen Obtained on a screen Seen by placing a screen behind it

Q12. Gravitational potential energy is given by the formula:

1/2 mv^2 Fs mgh mv

Q13. What is the term for the bending of light by gravity?

Refraction Reflection Gravitational lensing Diffraction

Q14. In a series circuit, the current flowing through each resistor is:

Different Same Dependent on resistance value Zero

Q15. Boiling water in a pot on a stove is an example of heat transfer by:

Conduction Convection Radiation Convection and conduction

Q16. What is the SI unit of the gravitational constant (G)?

N m²/kg² N m/kg N/m² kg²/N m²

Q17. Which type of defect involves an atom being displaced from its lattice site to an interstitial position?

Vacancy Frenkel defect Schottky defect Dislocation

Q18. Consider a ferromagnetic material with a simple cubic lattice and nearest-neighbor exchange interaction J. In the mean-field approximation, the spontaneous magnetization M is related to the applied magnetic field H and the temperature T by the Brillouin function. Which of the following is a consequence of the mean-field theory for ferromagnetism?

It accurately predicts critical exponents. It accounts for short-range correlations. It predicts a phase transition at the Curie temperature but often misses the critical behavior. It correctly describes the temperature dependence of magnetization at all temperatures.

Q19. A ray of light is incident at the base of an isosceles right-angled prism such that it grazes the hypotenuse. If the refractive index of the prism is greater than √2, what is the deviation produced?

0 degrees 90 degrees 180 degrees Depends on the angle of incidence at the second surface

Q20. The thermodynamic properties of a system are uniquely determined by its:

Microstate Macrostate Phase space Energy level

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