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:

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:

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:

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 sliding friction is _______________ than the static friction.

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

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Q:

A covex mirror of focal length f (in air) is immersed in a liquid (u=4/3). The focal length of the mirror in the liquid will be :

A) f B) (4/3)f
C) (3/4)f D) (7/3)f
 
Answer & Explanation Answer: A) f

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Q:

The first equation of motion gives the relation between

A) position and time B) position and velocity
C) velocity and time D) velocity and acceleration
 
Answer & Explanation Answer: C) velocity and time

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