The SI unit of work and energy is the
- ANewton
- BJoule
- CWatt
- DPascal
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Answer: (B) Joule
RRB NTPC Physics Questions with Answers & Explanations
20 Physics questions from the General Awareness section of RRB NTPC, 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.
The instrument used to measure electric current is the
- AVoltmeter
- BGalvanometer only
- COhmmeter
- DAmmeter
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Answer: (D) Ammeter
The SI unit of electric current is the
- AAmpere
- BOhm
- CCoulomb
- DVolt
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Answer: (A) Ampere
The bending of light when it passes from one medium to another is called
- ADiffraction
- BRefraction
- CDispersion
- DReflection
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Answer: (B) Refraction
Which colour of light has the longest wavelength?
- AGreen
- BViolet
- CRed
- DBlue
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Answer: (C) Red
Which is a good conductor of electricity?
- ACopper
- BWood
- CRubber
- DGlass
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Answer: (A) Copper
The acceleration due to gravity on Earth is about
- A9.8 m/s²
- B10.8 m/s²
- C1.6 m/s²
- D8.9 m/s²
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Answer: (A) 9.8 m/s²
Which mirror is used as a rear-view mirror in vehicles?
- ACylindrical mirror
- BPlane mirror
- CConcave mirror
- DConvex mirror
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Answer: (D) Convex mirror
A rainbow is formed due to
- APolarisation
- BOnly reflection
- CDispersion and total internal reflection of light
- DScattering only
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Answer: (C) Dispersion and total internal reflection of light
The SI unit of power is the
- AAmpere
- BVolt
- CWatt
- DJoule
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Answer: (C) Watt
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Timed General Awareness test · 40 questions · instant rank
The unit of momentum is
- AJ/s
- Bkg·m/s²
- Ckg·m/s
- DN/m
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Answer: (C) kg·m/s
An electric motor converts
- AHeat into electricity
- BLight into electricity
- CElectrical energy into mechanical energy
- DMechanical energy into electrical energy
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Answer: (C) Electrical energy into mechanical energy
Which lens is used to correct myopia (short-sightedness)?
- AConvex lens
- BBifocal lens
- CCylindrical lens
- DConcave lens
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Answer: (D) Concave lens
Which device converts mechanical energy into electrical energy?
- ABattery
- BGenerator
- CMotor
- DTransformer
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Answer: (B) Generator
The SI unit of electrical resistance is the
- AVolt
- BFarad
- COhm
- DAmpere
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Answer: (C) Ohm
Newton's first law of motion is also called the law of
- AAcceleration
- BInertia
- CMomentum
- DGravitation
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Answer: (B) Inertia
Which colour of light has the longest wavelength?
- AViolet
- BRed
- CGreen
- DBlue
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Answer: (B) Red
The SI unit of electric current is the
- AVolt
- BAmpere
- CCoulomb
- DOhm
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Answer: (B) Ampere
The SI unit of force is the
- AWatt
- BJoule
- CPascal
- DNewton
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Answer: (D) Newton
The SI unit of pressure is the
- ANewton
- BJoule
- CBar
- DPascal
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Answer: (D) Pascal
These are RankerClub practice questions written in the RRB NTPC pattern. They are not official SSC/IBPS/RRB papers.
