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 Physics Questions

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Q:

An electric fuse is based on

A) the chemical effect of the current B) the magnetic effect of the current
C) the heating effect of the current D) All of the above
 
Answer & Explanation Answer: C) the heating effect of the current

Explanation:

An electric fuse is based on the heating effect of the current.

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Q:

Negative acceleration is in the opposite direction of:

A) force B) distance
C) velocity D) momentum
 
Answer & Explanation Answer: C) velocity

Explanation:
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Q:

Increased wind speed is accompanied by a reduced air _____________.

A) humidity B) pressure
C) density D) aridity
 
Answer & Explanation Answer: B) pressure

Explanation:
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Q:

The humidity of the air depends upon

A) Weather B) Temperature
C) Location D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

Humidity means the amount of watervapour present in the atmosphere. It depends on weather, location and temperature of the place.

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Q:

If the current flowing through a circuit is 0.6 A for 6 mins, the amount of electric charge flowing through it is .......

A) 360C B) 216 C
C) 60 C D) 36 C
 
Answer & Explanation Answer: B) 216 C

Explanation:
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Q:

Which must be true for metamorphism to occur?

A) The grain size must become smaller B) The process must take place underwater
C) The parent rock must be in solid form D) The parent rock must be igneous
 
Answer & Explanation Answer: C) The parent rock must be in solid form

Explanation:

Metamorphism is the method of changing the structure of a rock by using heat and temperature.

Hence, for this to happen the parent rock must be in solid form only. Therefore, option C) is true.

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Q:

Every hot object emits _________________

A) X -­ rays B) Visible light
C) Infrared rays D) Ultraviolet rays
 
Answer & Explanation Answer: C) Infrared rays

Explanation:
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Q:

The light of distant stars is affected by

A) Interstellar Dust B) The Earth's Atmosphere
C) Both A & B D) None of the above
 
Answer & Explanation Answer: C) Both A & B

Explanation:
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