A rainbow is formed due to
- AOnly reflection
- BDispersion and total internal reflection of light
- CPolarisation
- DScattering only
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Answer: (B) Dispersion and total internal reflection of light
SSC GD Constable Physics Questions with Answers & Explanations
18 Physics questions from the General Knowledge & General Awareness section of SSC GD 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.
The unit of momentum is
- Akg·m/s
- BJ/s
- Ckg·m/s²
- DN/m
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Answer: (A) kg·m/s
Which lens is used to correct myopia (short-sightedness)?
- AConvex lens
- BCylindrical lens
- CConcave lens
- DBifocal lens
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Answer: (C) Concave lens
Which mirror is used as a rear-view mirror in vehicles?
- APlane mirror
- BConvex mirror
- CCylindrical mirror
- DConcave mirror
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Answer: (B) Convex mirror
Which colour of light has the longest wavelength?
- ABlue
- BRed
- CGreen
- DViolet
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Answer: (B) Red
Newton's first law of motion is also called the law of
- AGravitation
- BAcceleration
- CMomentum
- DInertia
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Answer: (D) Inertia
The SI unit of work and energy is the
- AJoule
- BPascal
- CWatt
- DNewton
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Answer: (A) Joule
The acceleration due to gravity on Earth is about
- A8.9 m/s²
- B10.8 m/s²
- C1.6 m/s²
- D9.8 m/s²
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Answer: (D) 9.8 m/s²
The sky appears blue because of
- AReflection of light
- BRefraction of light
- CScattering of light
- DDispersion of light
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Answer: (C) Scattering of light
Which is a good conductor of electricity?
- ACopper
- BWood
- CRubber
- DGlass
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Answer: (A) Copper
Ready for the real thing?
Timed General Knowledge & General Awareness test · 20 questions · instant rank
The bending of light when it passes from one medium to another is called
- AReflection
- BDispersion
- CDiffraction
- DRefraction
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Answer: (D) Refraction
Ultrasound has a frequency greater than
- A200 Hz
- B20 Hz
- C20,000 Hz
- D2,000 Hz
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Answer: (C) 20,000 Hz
The SI unit of pressure is the
- APascal
- BBar
- CNewton
- DJoule
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Answer: (A) Pascal
The instrument used to measure electric current is the
- AGalvanometer only
- BOhmmeter
- CAmmeter
- DVoltmeter
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Answer: (C) Ammeter
Which device converts mechanical energy into electrical energy?
- ATransformer
- BGenerator
- CMotor
- DBattery
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Answer: (B) Generator
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
Absolute zero temperature is
- A−459 °C
- B0 °C
- C−273.15 °C
- D−100 °C
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Answer: (C) −273.15 °C
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
These are RankerClub practice questions written in the SSC GD Constable pattern. They are not official SSC/IBPS/RRB papers.
