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Physics - General Concepts — Science Questions & Practice

Practise 16 Physics - General Concepts questions from Science for competitive exams such as UPSC, Banking, SSC and Railway. Read the worked questions below, check every answer with an explanation, and track what you get wrong.

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Practice questions on Physics - General Concepts — with answers

Try each question first, then open the answer. Explanations are included.

1. In which medium does sound travel fastest?

ALiquids
BSolids
CVacuum (sound cannot travel in a vacuum)
DGases

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Answer: B

Sound travels fastest in solids because their particles are closely packed, allowing vibrations to transfer more quickly than in liquids or gases.

2. What is the SI unit of frequency?

AWatt
BJoule
CHertz (Hz)
DNewton

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Answer: C

The correct answer is 'Hertz'.

3. Which type of energy is stored in a stretched rubber band?

AChemical Energy
BThermal Energy
CKinetic Energy
DPotential Energy (Elastic Potential Energy)

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Answer: D

The correct answer is 'Potential energy'.

4. What is the speed of light in a vacuum (approximately)?

A3 x 10^8 m/s
B3 x 10^10 m/s
C3 x 10^5 m/s
D3 x 10^6 m/s

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Answer: A

The correct answer is '3 x 10^8 m/s'.

5. What is the phenomenon of splitting white light into its constituent colours called?

ADiffraction
BRefraction
CDispersion
DReflection

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Answer: C

The correct answer is 'Dispersion'.

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