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 Physics Questions

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Q:

Which mirror is used as rear view mirror in vehicles?

A) Concave B) Plane
C) Convex D) Any of the above
 
Answer & Explanation Answer: C) Convex

Explanation:

Convex mirror is used as rear view mirror in vehicles. Because the image is smaller, more image can fit onto the mirror, so a convex mirror provides for a larger field of view than a plane mirror. This is why they are useful.

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Q:

Which among the following is a vector quantity?

A) Heat B) Angular momentum
C) Work D) Time
 
Answer & Explanation Answer: B) Angular momentum

Explanation:
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Q:

The path of a projectile is called its ______.

A) Altitude B) Range
C) Trajectory D) Flight
 
Answer & Explanation Answer: C) Trajectory

Explanation:
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Q:

When a ball is thrown vertically upwards, which of the following quantities remains constant during its motion?

A) Energy B) Displacement
C) Velocity D) Acceleration
 
Answer & Explanation Answer: A) Energy

Explanation:
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Q:

The strain produced in a body is directly proportional to the stress applied on it, is called _______.

A) Dollar's law B) Hooke's law
C) Miller's law D) Kepler's law
 
Answer & Explanation Answer: B) Hooke's law

Explanation:
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Q:

Instrument for measuring wind velocity is called

A) Coulombmeter B) Anemometer
C) Cyanometer D) Chronometer
 
Answer & Explanation Answer: B) Anemometer

Explanation:
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Q:

_____ is same on every point on a rotating body.

A) Linear velocity B) Linear momentum
C) Angular torque D) Angular velocity
 
Answer & Explanation Answer: D) Angular velocity

Explanation:
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Q:

What is impulse equal to?

A) Change in momentum B) Change in force
C) Change in velocity D) Change in acceleration
 
Answer & Explanation Answer: A) Change in momentum

Explanation:
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