Physics - MOST IMPORTANT Bihar Police SI Previous Year Questions
Practice real questions from previous year exams of Bihar Police SI.
📘 Current Electricity📚 Electric Current
Q1
What is the S.I. unit of electric current?
🎯 Bihar Police SI (Excise Sub Inspector) Preliminary Examination-2025
📘 Human Eye📚 Parts of the Eye
Q2
What is the diameter of the human eyeball?
🎯 Bihar Police SI (Excise Sub Inspector) Preliminary Examination-2025
📘 Mechanical Properties of Solid📚 Elasticity
Q3
Which of the following materials is the most elastic?
🎯 Bihar Police SI (Excise Sub Inspector) Preliminary Examination-2025
📘 Light and Optics📚 Refraction and related Terminology
Q4
Why does a coin dropped in water appear to be raised from its surface?
🎯 Bihar Police SI (Excise Sub Inspector) Preliminary Examination-2025
📘 Thermal Properties of Matter📚 Change of Phase between Gases and Solids- Sublimation and Deposition
Q5
In the process of sublimation, what is the change in the state of matter?
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📘 Work, Energy and Power📚 Transformation of Energy
Q6
To light a bulb using solar energy, the energy conversion that takes place is -
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📘 Current Electricity📚 Electric Power
Q7
What is the unit of 'electric power'?
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📘 Units and Dimensions📚 Misc
Q8
A solid ball has a diameter of 4.2 cm and a density of 8.9 g/cm³. Find the mass of the ball.
🎯 Bihar Police SI Main Examination, 2023
📘 Light and Optics📚 Total Internal Reflection and Critical Angle
Q9
On which of the following principles do optical fibers work?
🎯 Bihar Police SI Main Examination, 2023
📘 Modern Physics📚 Misc
Q10
What is the characteristic of a Bose-Einstein condensate?
🎯 Bihar Police SI Main Examination, 2023
📘 Fluid Mechanics📚 Pressure and its applications
Q11
At what temperature does water boil on mountains?
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📘 Fluid Mechanics📚 Pressure and its applications
Q12
How is blood pressure expressed?
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📘 Work, Energy and Power📚 Law of Conservation of Energy
Q13
The energy of a freely falling body...
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📘 Instruments to Measure things📚 List of Instruments to Measure Physical Quantities
Q14
What is the name of the instrument used to measure the area of a planar figure by tracing its boundary on a map?
🎯 Bihar Police SI Main Examination, 2023
📘 Atomic and Nuclear Physics📚 Misc
Q15
What is the change in angular momentum when an electron in a hydrogen atom moves from the first orbit to the second?
🎯 Bihar Police SI Main Examination, 2023
📘 Force and Motion📚 Physical Quantities related to Motion- acceleration, displacement, etc.
Q16
The ratio of displacement to distance is always :
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📘 Human Eye📚 Parts of the Eye
Q17
The curvature of the eye lens can be modified by-
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📘 Light and Optics📚 Use of Spherical Mirrors
Q18
Why is the use of a parabolic mirror in a telescope more beneficial than an objective convex lens? Select the most correct answer.
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📘 Force and Motion📚 Circular Motion and related terms (angular displacement, time period, etc.)
Q19
In uniform circular motion, the following quantity remains constant-
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📘 Sound📚 Characteristics of Sound waves- wavelength, time period, etc.
Q20
Sound waves travel in air as :
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