Physics - MOST IMPORTANT UPPSC ACF/RFO Previous Year Questions
Practice real questions from previous year exams of UPPSC ACF/RFO.
📘 Fluid Mechanics📚 Surface Tension and its applications
Q1
Hair of shaving brush clings together when the brush is removed from the water due to-
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📘 Fluid Mechanics📚 Archimedes Principle and its applications
Q2
While floating in the sea, how much part of an iceberg is above the sea level?
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📘 Fluid Mechanics📚 Archimedes Principle and its applications
Q3
While floating in the sea, how much part of an iceberg is above the sea level?
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📘 Light and Optics📚 Plane Mirrors
Q4
How many images will be formed if a point light source is placed between two parallel plane mirrors?
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📘 Human Eye📚 Defects in Eyes- Myopia
Q5
The defect of myopic eye is cured:
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📘 Human Eye📚 Working of the Human Eye
Q6
Image formed on the retina of the human eye is:
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📘 Electrostatics📚 Electric Field
Q7
Assertion (A) : A person travelling in a car with closed glass windows and doors is safe from the lightening strike. Reason (R) : Actually a closed car behaves like a hollow conductor, so charges cannot enter inside the car.
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📘 Modern Physics📚 Semiconductor
Q8
Consider the following statements:
Assertion (A): The electrical conductivity of semiconductors increases with rise of temperature.
Reason (R): Semiconductors possess a negative temperature coefficient of resistance.
Select the correct answer by using the code given below:
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📘 Thermal Properties of Matter📚 Temperature Scales- Kelvin, Celsius, etc.
Q9
Which of the following pair is not correctly matched?
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📘 Units and Dimensions📚 Fundamental and Supplementary Units of Measurement
Q10
Which of the following is not a time unit?
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📘 Atomic and Nuclear Physics📚 Radioactivity
Q11
Which one is not the unit of Radioactivity?
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📘 Current Electricity📚 Electrical Energy
Q12
Kilowatt-Hour is unit of
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📘 Instruments to Measure things📚 List of Instruments to Measure Physical Quantities
Q13
'Ringelmann scale' is used to measure density of
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📘 Work, Energy and Power📚 Forms of Energy- Kinetic Energy and Potential Energy
Q14
When the velocity of a movable object is doubled then its kinetic energy would be-
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📘 Sound📚 Characteristics of Sound waves- wavelength, time period, etc.
Q15
Sound waves travelling in air transport:
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📘 Light and Optics📚 Misc
Q16
Light from the Sun reaches Earth in approximately:
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📘 Light and Optics📚 Reflection of Light and Terminology involved
Q17
Objects are visible in light due to-
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📘 Light and Optics📚 Reflection of Light and Terminology involved
Q18
In which colour, green colour glass plate is visible in red colour light?
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📘 Light and Optics📚 Refraction and related Terminology
Q19
By which property, a rod dipped in a vessel full of water appears bent?
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📘 Natural Phenomenon📚 Advanced sunrise and delayed sunset
Q20
Sun appears in oval shape at sunrise and sunset.
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