Absolute zero temperature is
- A−273.15 °C
- B0 °C
- C−459 °C
- D−100 °C
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Answer: (A) −273.15 °C
Delhi Police Constable Physics Questions with Answers & Explanations
20 Physics questions from the General Knowledge / Current Affairs section of Delhi Police Constable, each with the correct answer and a worked explanation. Try each question first, then tap Show answer to check. When you're ready, take the timed chapter-wise test to see your all-India rank.
Which colour of light has the longest wavelength?
- AViolet
- BRed
- CBlue
- DGreen
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Answer: (B) Red
The SI unit of electrical resistance is the
- AAmpere
- BOhm
- CVolt
- DFarad
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Answer: (B) Ohm
The SI unit of pressure is the
- APascal
- BNewton
- CJoule
- DBar
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Answer: (A) Pascal
The SI unit of work and energy is the
- ANewton
- BWatt
- CPascal
- DJoule
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Answer: (D) Joule
Sound cannot travel through
- AVacuum
- BWater
- CSteel
- DAir
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Answer: (A) Vacuum
A rainbow is formed due to
- ADispersion and total internal reflection of light
- BScattering only
- CPolarisation
- DOnly reflection
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Answer: (A) Dispersion and total internal reflection of light
Which mirror is used as a rear-view mirror in vehicles?
- APlane mirror
- BConcave mirror
- CConvex mirror
- DCylindrical mirror
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Answer: (C) Convex mirror
Absolute zero temperature is
- A−100 °C
- B−273.15 °C
- C0 °C
- D−459 °C
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Answer: (B) −273.15 °C
The instrument used to measure atmospheric pressure is the
- ABarometer
- BThermometer
- CHygrometer
- DAmmeter
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Answer: (A) Barometer
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Timed General Knowledge / Current Affairs test · 50 questions · instant rank
Which colour of light has the longest wavelength?
- AGreen
- BBlue
- CViolet
- DRed
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Answer: (D) Red
The sky appears blue because of
- ADispersion of light
- BScattering of light
- CRefraction of light
- DReflection of light
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Answer: (B) Scattering of light
The instrument used to measure electric current is the
- AVoltmeter
- BGalvanometer only
- CAmmeter
- DOhmmeter
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Answer: (C) Ammeter
The bending of light when it passes from one medium to another is called
- ARefraction
- BDiffraction
- CDispersion
- DReflection
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Answer: (A) Refraction
The acceleration due to gravity on Earth is about
- A8.9 m/s²
- B10.8 m/s²
- C9.8 m/s²
- D1.6 m/s²
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Answer: (C) 9.8 m/s²
An electric motor converts
- AHeat into electricity
- BMechanical energy into electrical energy
- CElectrical energy into mechanical energy
- DLight into electricity
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Answer: (C) Electrical energy into mechanical energy
The SI unit of electric current is the
- AOhm
- BVolt
- CAmpere
- DCoulomb
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Answer: (C) Ampere
Which lens is used to correct myopia (short-sightedness)?
- AConcave lens
- BCylindrical lens
- CConvex lens
- DBifocal lens
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Answer: (A) Concave lens
The SI unit of pressure is the
- ABar
- BPascal
- CJoule
- DNewton
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Answer: (B) Pascal
The SI unit of power is the
- AWatt
- BAmpere
- CJoule
- DVolt
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Answer: (A) Watt
These are RankerClub practice questions written in the Delhi Police Constable pattern. They are not official SSC/IBPS/RRB papers.
