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Physics Laws and Principles — Physics Questions & Practice

Practise 35 Physics Laws and Principles questions from Physics 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 Laws and Principles — with answers

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1. What does Archimedes' Principle state?

Aat constant pressure, the volume of a gas is directly proportional to its absolute temperature
Bthe force needed to extend or compress a spring is directly proportional to the distance of that extension/compression
Ca body immersed in a fluid experiences an upward buoyant force equal to the weight of fluid displaced
Dthe total current entering a junction equals the total current leaving it

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Answer: C

Archimedes' Principle states that a body immersed in a fluid experiences an upward buoyant force equal to the weight of fluid displaced.

2. Which physics law/principle states that describes the relationship between the angles of incidence and refraction when light passes between two media?

ASnell's Law
BKirchhoff's Current Law
CFaraday's Law of Electromagnetic Induction
DCharles's Law

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Answer: A

Snell's Law states that describes the relationship between the angles of incidence and refraction when light passes between two media.

3. Which physics law/principle states that at constant pressure, the volume of a gas is directly proportional to its absolute temperature?

AArchimedes' Principle
BPascal's Law
CNewton's First Law of Motion
DCharles's Law

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Answer: D

Charles's Law states that at constant pressure, the volume of a gas is directly proportional to its absolute temperature.

4. Which physics law/principle states that it is impossible to simultaneously know both the exact position and exact momentum of a particle?

ALenz's Law
BPascal's Law
CHeisenberg's Uncertainty Principle
DCharles's Law

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Answer: C

Heisenberg's Uncertainty Principle states that it is impossible to simultaneously know both the exact position and exact momentum of a particle.

5. Which physics law/principle states that energy can neither be created nor destroyed, only transformed from one form to another?

ALaw of Conservation of Energy
BNewton's Law of Universal Gravitation
CFaraday's Law of Electromagnetic Induction
DLenz's Law

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Answer: A

Law of Conservation of Energy states that energy can neither be created nor destroyed, only transformed from one form to another.

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Physics Laws and Principles — Physics Questions & Practice

Practice questions on Physics Laws and Principles — with answers

1. What does Archimedes' Principle state?

2. Which physics law/principle states that describes the relationship between the angles of incidence and refraction when light passes between two media?

3. Which physics law/principle states that at constant pressure, the volume of a gas is directly proportional to its absolute temperature?

4. Which physics law/principle states that it is impossible to simultaneously know both the exact position and exact momentum of a particle?

5. Which physics law/principle states that energy can neither be created nor destroyed, only transformed from one form to another?

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