The instrument used to measure intensity of earthquakes is MCQ with Answer and Explanation

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The instrument used to measure intensity of earthquakes is

A. Richter scale

B. Hygrometer

C. Seismograph

D. Barometer

Answer: Option C

Solution (By JKSSB Mock Tests)

Seismograph records seismic waves. Richter scale quantifies magnitude.

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Practice More Physics Questions

Question #1

Uniform acceleration: v-t graph is:

A. Parabola

B. Straight line with slope

C. Hyperbola

D. Horizontal line

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Correct Answer: Option B

Explanation:
a = constant ⇒ v = u + at (linear in t). Slope = acceleration. Memory tip: 'v-t slope = acceleration; area = displacement'. Graph interpretation frequently tested in competitive kinematics sections.

This question belongs to: Science Physics

Question #2

Which scientist is associated with the theory of relativity?

A. Albert Einstein

B. Isaac Newton

C. James Watt

D. Galileo Galilei

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Correct Answer: Option A

Explanation:
Albert Einstein proposed special relativity (1905) and general relativity (1915), revolutionized concepts of space, time, gravity. E=mc². Newton classical mechanics. Galileo telescope, falling bodies. Watt steam engine.

This question belongs to: Science Physics

Question #3

Heat from the Sun reaches Earth by

A. Convection

B. Conduction

C. Radiation

D. Evaporation

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Correct Answer: Option C

Explanation:
Vacuum of space, only radiation (electromagnetic waves) can transfer heat.

This question belongs to: Science Physics

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