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Q:

The motion of a freely falling body is an example of ________________________ motion.

A) uniformly accelerated B) non-uniformly accelerated
C) constant velocity D) constant speed
 
Answer & Explanation Answer: A) uniformly accelerated

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Q:

A raised hammer possesses

A) Kinetic energy B) Mechanical energy
C) Muscular energy D) Potential energy
 
Answer & Explanation Answer: D) Potential energy

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Q:

Propagation of sound can be visualised as propagation of _____________ variations in the medium.

A) energy B) power
C) force D) pressure
 
Answer & Explanation Answer: D) pressure

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Q:

The force of friction between two surfaces will increase if:

A) a layer of lubricant is kept between the two surfaces B) the two surfaces are pressed harder
C) air gap is created between the two surfaces D) irregularities on both the surfaces are removed
 
Answer & Explanation Answer: B) the two surfaces are pressed harder

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Q:

Which of the following waves cannot be polarised?

A) Radio B) Ultra violet
C) Infrared D) Ultrasonic
 
Answer & Explanation Answer: D) Ultrasonic

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Q:

At boiling point of liquids , its

A) Temperature increases B) Atmospheric pressure increases
C) Temperature remains constant D) Vapour pressure decreases
 
Answer & Explanation Answer: C) Temperature remains constant

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Q:

A body has a weight W on the surface of Earth. What is its weight on a planet whose mass is 15 times that of Earth and a radius that is 4 times that of the earth?

A) 15/4 W B) 16/9 W
C) 16/7 W D) 16/15 W
 
Answer & Explanation Answer: D) 16/15 W

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Q:

One Gigabyte = ? (in decimal value)

A) 1000 bytes B) 10002 bytes
C) 10003 bytes D) 10004 bytes
 
Answer & Explanation Answer: C) 10003 bytes

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