Introduction
Preparing Physics MCQs KPPSC for competitive recruitment exams requires strong conceptual clarity, especially in core subjects like physics. Many candidates possess theoretical knowledge, yet they struggle to apply it under exam conditions. Therefore, practicing well-designed multiple-choice questions (MCQs) is essential because they improve speed, accuracy, and analytical thinking.
Physics MCQs, particularly those based on Class 11 and 12 curricula, frequently appear in BPS-17 level recruitment tests. Regular practice helps candidates revise formulas, strengthen conceptual understanding, and identify weak areas. Moreover, solving explanatory MCQs encourages active learning rather than passive memorization.
This post provides carefully prepared, original physics MCQs aligned with KPPSC-style exams. Each question includes a concise explanation to support conceptual learning and exam readiness.
Physics MCQs Practice (KPPSC Level)
1. The unit of electric flux in SI system is:
A. Volt
B. Newton/Coulomb
C. Volt-meter
D. Coulomb/m²
Answer: C
Explanation:
Electric flux equals electric field multiplied by area. Since electric field is V/m, flux becomes volt-meter.
2. If velocity doubles, kinetic energy becomes:
A. Double
B. Half
C. Four times
D. Unchanged
Answer: C
Explanation:
Kinetic energy KE=½mv2KE = ½mv^2KE=½mv2. Because velocity is squared, doubling velocity increases KE fourfold.
3. Which quantity remains constant in uniform circular motion?
A. Velocity
B. Speed
C. Acceleration direction
D. Centripetal force direction
Answer: B
Explanation:
Speed stays constant while velocity direction changes continuously due to centripetal acceleration.
4. The time constant of an RC circuit depends on:
A. Both resistance and capacitance
B. Only capacitance
C. Only resistance
D. Frequency
Answer: A
Explanation:
Explanation: Time constant τ=RCτ = RCτ=RC. Hence both resistance and capacitance determine charging/discharging rate.
5. Escape velocity from Earth mainly depends on:
A. Mass of object
B. Earth’s radius only
C. Height of object only
D. Earth’s mass and radius
Answer: D
Explanation:
Escape velocity v=√(2GM/R)v = √(2GM/R)v=√(2GM/R) depends on gravitational constant, Earth’s mass, and radius.
Transformer MCQs
6. A transformer works on the principle of:
A. Electrostatics
B. Mutual induction
C. Self-induction
D. Resonance
Answer: B
Explanation:
Changing current in primary coil induces emf in secondary coil through mutual electromagnetic induction.
7. In Young’s double slit experiment, fringe spacing increases when:
A. Wavelength increases
B. Slit distance increases
C. Screen distance decreases
D. Frequency increases
Answer: A
Explanation:
Fringe spacing β=λD/dβ = λD/dβ=λD/d. Increasing wavelength increases separation of bright fringes.
8. The dimensional formula of pressure is:
A. ML⁻¹T⁻²
B. ML⁻²T⁻²
C. MLT⁻¹
D. ML²T⁻²
Answer: B
Explanation:
Pressure = Force/Area → (MLT⁻²)/L² = ML⁻²T⁻².
9. Which wave is purely transverse?
A. Sound wave
B. Water wave
C. Light wave
D. Seismic P-wave
Answer: C
Explanation:
Electromagnetic waves like light have oscillations perpendicular to propagation direction.
10. Half-life of a radioactive element is 10 years. After 20 years, remaining quantity is:
A. 1/2
B. 1/4
C. 1/8
D. 3/4
Answer: B
Explanation:
Two half-lives pass in 20 years, leaving (1/2)2=1/4 (1/2)^2 = 1/4(1/2)2=1/4 of original sample.
Electronics MCQs Practice (KPPSC Level)
11. Power factor in AC circuit equals:
A. sinφ
B. tanφ
C. cosφ
D. secφ
Answer: C
Explanation:
Power factor is cosine of phase angle between voltage and current.
12. Magnetic field inside a long solenoid depends mainly on:
A. Length only
B. Wire thickness
C. Core diameter
D. Current and turns density
Answer: B
Explanation:
B=μ0nIB = μ₀nIB=μ0nI, where n is turns per unit length and I is current.
13. Photon energy increases when wavelength:
A. Increases
B. Decreases
C. Remains constant
D. Doubles
Answer: B
Explanation:
E=hc/λE = hc/λE=hc/λ. Shorter wavelength corresponds to higher photon energy.
14. Work done by conservative forces depends on:
A. Initial and final positions
B. Speed only
C. Path only
D. Time taken
Answer: A
Explanation:
Conservative force work is path-independent; only endpoints matter.
15. Critical angle exists when light travels from:
A. Rare to dense medium
B. Dense to rare medium
C. Vacuum to air
D. Equal refractive indices
Answer: B
Explanation:
Total internal reflection occurs when light moves from denser to rarer medium.
16. In a p-type semiconductor, majority carriers are:
A. Electrons
B. Neutrons
C. Protons
D. Holes
Answer: D
Explanation:
Doping with trivalent impurities produces holes as dominant charge carriers.
17. The slope of velocity-time graph represents:
A. Displacement
B. Acceleration
C. Momentum
D. Force
Answer: B
Explanation:
Change in velocity over time equals acceleration.
18. If frequency of AC source increases, inductive reactance:
A. Decreases
B. Becomes zero
C. Remains constant
D. Increases
Answer: D
Explanation:
XL=2πfLX_L = 2πfLXL=2πfL; hence reactance rises with frequency.
19. Which law explains buoyant force?
A. Archimedes’ principle
B. Pascal’s law
C. Newton’s third law
D. Bernoulli’s theorem
Answer: A
Explanation:
Upthrust equals weight of displaced fluid according to Archimedes’ principle.
20. Coherent light sources must have same:
A. Amplitude only
B. Polarization only
C. Intensity only
D. Phase difference constant
Answer: D
Explanation:
Constant phase relationship ensures stable interference patterns.
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Preparation Tips for KPPSC Physics Exams
Effective preparation requires both conceptual clarity and strategic practice. First, revise fundamental principles from Class 11 and 12 textbooks because most KPPSC physics questions originate from these core concepts. Next, focus on formulas, units, and dimensional analysis since they frequently appear in MCQs. Additionally, solve mixed-difficulty practice tests regularly to improve time management.
It is also helpful to analyze incorrect answers carefully. Understanding why an option is wrong prevents repeated mistakes. Furthermore, maintain concise revision notes for quick review before exams. Finally, consistent study routines and periodic self-assessment significantly enhance performance in competitive physics examinations.
Conclusion
Physics preparation for KPPSC recruitment exams demands steady effort, conceptual understanding, and regular practice. MCQs serve as an efficient tool to test knowledge, reinforce theory, and develop exam confidence. By focusing on fundamental principles, practicing varied questions, and reviewing explanations carefully, candidates can strengthen their readiness for BPS-17 level tests.
Consistency remains the key factor. Even short daily revision sessions can produce noticeable improvement over time. With structured preparation, disciplined practice, and a clear focus on concepts, candidates can approach physics sections of recruitment exams with greater confidence and competence.