Physics Questions

Q:

What is the SI unit of intensity of sound?

A) Decible B) Newton
C) Heartz D) Tesla
 
Answer & Explanation Answer: A) Decible

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Q:

Who discovered theory of relativity?

A) Isaac Newton B) Albert Einstein
C) Niel Bohr D) Michael Faraday
 
Answer & Explanation Answer: B) Albert Einstein

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Q:

Why the Earth is having its own atmosphere ?

A) Winds B) Clouds
C) Gravity D) Rotation of the Earth
 
Answer & Explanation Answer: C) Gravity

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Q:

Which motion has magnitude of static frictional force directly proportional to normal reaction?

A) Impending motion B) Actual motion
C) Both 1 and 2 D) None of the above
 
Answer & Explanation Answer: A) Impending motion

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Q:

Which of the following is not a vector quantity?

A) Acceleration B) Electric current
C) Force D) Velocity
 
Answer & Explanation Answer: B) Electric current

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Q:

A galvanometer can be converted to a voltmeter by connecting

A) a high resistance in parallel B) a high resistance in series
C) a low resistance in series D) a low resistance in parallel
 
Answer & Explanation Answer: B) a high resistance in series

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Q:

The boiling point of an alcohol is 78°C. What is the temperature in Kelvin scale?

A) 78K B) 341 K
C) 373 K D) 351 K
 
Answer & Explanation Answer: D) 351 K

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Q:

The sliding friction is _______________ than the static friction.

A) double B) same
C) greater D) smaller
 
Answer & Explanation Answer: D) smaller

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