Physics Questions

Q:

______ is the perpendicular distance between point of application of force and axis of rotation.

A) Moment arm B) Moment of Inertia
C) Altitude D) Base
 
Answer & Explanation Answer: A) Moment arm

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Q:

A body is initially moving with a velocity of 10 m/s. It undergoes an acceleration of 2 m/s2 for 5 seconds. Find the displacement (in m) of this body in these 5 seconds.

 

A)  25 B)  37.5
C)  50 D)  75
 
Answer & Explanation Answer: D)  75

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Q:

During _____________ motion of an object along a straight line, the velocity remains constant with time.

A) linear B) translational
C) uniform D) equilibrium
 
Answer & Explanation Answer: C) uniform

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Q:

Cold air is ______.

A) lighter than warm air hence cold air settles down B) heavier than warm air hence cold air rises up
C) lighter than warm air hence cold air rises up   D) heavier than warm air hence cold air settles down  
 
Answer & Explanation Answer: D) heavier than warm air hence cold air settles down  

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Q:

The distance-time graph for the motion of an object moving with a constant speed is a __________.

A) Dot B) Circle
C) Straight Line D) Curve
 
Answer & Explanation Answer: C) Straight Line

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Q:

Instrument for measuring blueness of the sky or ocean is called ___________.

A) Bathymeter B) Ceraunograph
C) Cyanometer D) Barometer
 
Answer & Explanation Answer: C) Cyanometer

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Q:

The increasing order of the refractive index of certain materials is (left to right) .......

A) Rocksalt, Benzene, Kerosene, Ice B) Rock Salt, Ice, Benzene, Kerosene
C) Ice, Kerosene, Benzene, Rock Salt D) Kerosene, Ice, Benzene, Rock Salt
 
Answer & Explanation Answer: C) Ice, Kerosene, Benzene, Rock Salt

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Q:

Which device is used to measure the depth of ocean?

A) Lexometer B) Nanometer
C) Fathometer D) Hydrometer
 
Answer & Explanation Answer: C) Fathometer

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