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 Physics Questions

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Q:

If the resistance of a conductor is doubled, the current gets halved. This is because

A) I = V - R B) I = V/R
C) I = Rn/V D) I = VR
 
Answer & Explanation Answer: B) I = V/R

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Q:

The instrument used to determine the rotation speed of a shaft is called

A) Speedometer B) Tachometer
C) Anemometer D) Chronometer
 
Answer & Explanation Answer: B) Tachometer

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Q:

A spoon which looks bent is an example of which of the following?

A) Reflection B) Refraction
C) Retention D) Focus
 
Answer & Explanation Answer: B) Refraction

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Q:

Instrument for measuring low temperatures is called

A) Diagometer B) Cryometer
C) Chromatoptometer D) Cymometer
 
Answer & Explanation Answer: D) Cymometer

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Q:

Nautical miles to km formula

Answer

km ÷ 1.852 = nautical miles


Hence, 1 nmi = 1.852 km.

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Subject: Physics Exam Prep: CAT , Bank Exams

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Q:

Warm air is ______.

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

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Q:

While releasing the arrow from a stretched bow, the PE of the bow is converted into?

A) chemical energy B) kinetic energy
C) sound energy D) heat energy
 
Answer & Explanation Answer: B) kinetic energy

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Q:

The apparent weight of a person in a lift which is moving down with uniform acceleration is _______.

A) greater than the weight when the person is stationary B) twice the weight when the person is stationary
C) less than the weight when the person is stationary D) same as the weight when the person is stationary
 
Answer & Explanation Answer: C) less than the weight when the person is stationary

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