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Physics - MOST IMPORTANT Bihar Police Constable Previous Year Questions

Practice real questions from previous year exams of Bihar Police Constable.

📘 Magnetism📚 Magnetic Field Lines and its Characteristics

Q1

What is the nature of the magnetic field inside a current carrying solenoid?

🎯 Bihar Police Constable Exam-2025 (Exam 03.08.2025)

A.

Strong uniform magnetic field

B.

Strong non-uniform magnetic field

C.

Weak uniform magnetic field

D.

Weak non-uniform magnetic field

📘 Light and Optics📚 Types of Objects- Transparent, Translucent, Opaque

Q2

What is the main reason for the formation of shadow?

🎯 Bihar Police Constable Exam-2025 (Exam 03.08.2025)

A.

Light is absorbed by transparent objects

B.

Opaque objects block the path of light

C.

Light bends while passing through water

D.

Light travels faster in dark areas

📘 Thermal Properties of Matter📚 Change of Phase between Gases and Solids- Sublimation and Deposition

Q3

In which of the following phenomena does a solid change directly into a gaseous state without changing into a liquid state?

🎯 Bihar Police Constable Exam-2025 (Exam 03.08.2025)

A.

Fusion

B.

Deposition

C.

Freezing

D.

Sublimation

📘 Gravitation📚 Types of Artificial Satellites- Geosynchronous and Polar

Q4

Indian satellite series 'INSAT' is an example of

🎯 Bihar Police Constable Exam-2025 (Exam 03.08.2025)

A.

Military related satellite

B.

Polar orbiting satellite

C.

Meteorology related satellite

D.

Resource satellite

📘 Light and Optics📚 Types of Objects- Transparent, Translucent, Opaque

Q5

Which of the following materials is transparent?

🎯 Bihar Police Constable Exam-2025 (Exam 03.08.2025)

A.

Wood

B.

Glass

C.

Metal

D.

Cardboard

📘 Thermal Properties of Matter📚 Modes of Heat Transfer- Conduction, Convection and Radiation

Q6

Which method of heat transfer does not require a medium?

🎯 Bihar Police Constable Exam-2025 (Exam 03.08.2025)

A.

Convection

B.

Radiation

C.

Conduction

D.

Evaporation

📘 Gravitation📚 Relation between Mass and Weight

Q7

What is the SI unit of Weight?

🎯 Bihar Police Constable Exam-2025 (Exam 23.07.2025)

A.

Gram

B.

Kilogram

C.

Newton

D.

Dyne

📘 Force and Motion📚 Friction Basics and its application

Q8

Match the following:
List-I
A. Heart
B. Friction
C. Condensation
D. Lungs

List-II
I. Expand and Contract
II. Necessary Evil
III. Pump
IV. Gas to Liquid

🎯 Bihar Police Constable Exam-2025 (Exam 23.07.2025)

A.

a-ii, b-i, c-iii, d-iv

B.

a-iii, b-ii, c-iv, d-i

C.

a-iii, b-i, c-ii, d-iv

D.

a-i, b-ii, c-iv, d-iii

📘 Natural Phenomenon📚 Dispersion of Light through a Prism

Q9

Which of the seven colors of white light is deviated the least after dispersion through a glass prism?

🎯 Bihar Police Constable Exam-2025 (Exam 23.07.2025)

A.

Red

B.

Blue

C.

Orange

D.

Violet

📘 Scientists and their Inventions📚 Inventors and Inventions

Q10

Match List-I (Scientists) with List-II (Laws of Physics) and choose the correct answer using the codes given below the lists.
List-I
A. Heisenberg
B. Einstein
C. Newton
D. Kepler

List-II
I. Laws of Motion
II. Laws of Planetary Motion
III. Photoelectric Effect
IV. Uncertainty Principle

🎯 Bihar Police Constable Exam-2025 (Exam 23.07.2025)

A.

A- $\displaystyle 1$ , B- $\displaystyle 2$ , C- $\displaystyle 3$ , D- $\displaystyle 4$

B.

A- $\displaystyle 2$ , B- $\displaystyle 1$ , C- $\displaystyle 3$ , D- $\displaystyle 4$

C.

A- $\displaystyle 3$ , B- $\displaystyle 1$ , C- $\displaystyle 4$ , D- $\displaystyle 2$

D.

A- $\displaystyle 4$ , B- $\displaystyle 3$ , C- $\displaystyle 1$ , D- $\displaystyle 2$

📘 Light and Optics📚 Refractive Index

Q11

(Left to Right) The correct ascending order of refractive index of some materials is -

🎯 Bihar Police Constable Exam-2025 (Exam 23.07.2025)

A.

Rock salt, Benzene, Kerosene, Ice

B.

Rock salt, Ice, Benzene, Kerosene

C.

Ice, Kerosene, Benzene, Rock salt

D.

Kerosene, Ice, Benzene, Rock salt

📘 Current Electricity📚 Resistance, Resistivity and specific resistance

Q12

When the temperature of a metallic object is increased, how is its resistance affected?

🎯 Bihar Police Constable Exam-2025 (Exam 23.07.2025)

A.

It always increases

B.

It always decreases

C.

Either increases or decreases

D.

Remains same

📘 Gravitation📚 Misc

Q13

A group of stars arranged in a definite pattern is called -

🎯 Bihar Police Constable Exam-2025 (Exam 23.07.2025)

A.

Galaxy

B.

Constellation

C.

Andromeda

D.

Solar System

📘 Force and Motion📚 Circular Motion and related terms (angular displacement, time period, etc.)

Q14

Butter is separated from milk by -

🎯 Bihar Police Constable Exam-2025 (Exam 23.07.2025)

A.

Fractional distillation

B.

Sublimation

C.

Churning

D.

Magnetic separation

📘 Light and Optics📚 Laws of Reflection

Q15

The law of reflection 'Angle of incidence equals angle of reflection' is true for the reflection of a ray of light on -

🎯 Bihar Police Constable Exam-2025 (Exam 23.07.2025)

A.

Only plane surface

B.

Only concave surface

C.

Only convex surface

D.

All of the above

📘 Current Electricity📚 Misc

Q16

Which of the following is the chemical effect of electric current?

🎯 Bihar Police Constable Exam-2025 (Exam 23.07.2025)

A.

Using electric current to produce a magnet

B.

Generating heat in an electric kettle

C.

Using electric bulb to produce light

D.

Production of H2 and O2 by passing current through water

📘 Light and Optics📚 Lens and its types

Q17

Concave lens is considered as ______ lens.

🎯 Bihar Police Constable Exam-2025 (Exam 20.07.2025)

A.

Converging

B.

Diverging

C.

Both $\displaystyle 1$ and $\displaystyle 2$

D.

None of these

📘 Units and Dimensions📚 Fundamental and Supplementary Units of Measurement

Q18

What is the SI unit of Force?

🎯 Bihar Police Constable Exam-2025 (Exam 20.07.2025)

A.

Diopter

B.

Newton

C.

Hertz

D.

Decibel

📘 Units and Dimensions📚 Fundamental and Supplementary Units of Measurement

Q19

Which of the following is the SI unit of Illuminance (Pradipti)?

🎯 Bihar Police Constable Exam-2025 (Exam 20.07.2025)

A.

Watt

B.

Lux

C.

Lumen

D.

Joule

📘 Fluid Mechanics📚 Archimedes Principle and its applications

Q20

Who discovered the principle that the buoyant force on an object is equal to the weight of the fluid displaced by that object?

🎯 Bihar Police Constable Exam-2025 (Exam 20.07.2025)

A.

Niels Bohr

B.

Isaac Newton

C.

Galileo Galilei

D.

Archimedes

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