Physics Questions

Q:

_________________ is a measure of the moisture in air.

A) Density B) Viscosity
C) Impurity D) Humidity
 
Answer & Explanation Answer: D) Humidity

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Q:

Meter in a vehicle that calculates distance covered by the vehicle is called __________.

A) Speedometer B) Odometer
C) Thermometer D) Kilometre
 
Answer & Explanation Answer: B) Odometer

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Q:

If the acceleration due to gravity on the surface of earth is g, then the acceleration due to gravity on the surface of a planet whose mass is same as that of earth and radius is half as that of earth is _________________.

 

A) 2g B) g/4
C) g/2 D) 4g
 
Answer & Explanation Answer: D) 4g

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Q:

The greater the difference in _____________, the faster the air moves.

A) humidity B) pressure
C) altitude D) latitude
 
Answer & Explanation Answer: B) pressure

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Q:

________________ refers to the superposing of two or more coherent waves to produce regions of maxima and minima in space, according to the principle of superposition.

A) Interference B) Rectification
C) Intensity D) Diffraction
 
Answer & Explanation Answer: A) Interference

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Q:

As a sailor jumps in the forward direction, the boat moves backwards. This example illustrates Newton's :

A) Second Law of Motion B) First and Second Law of Motion
C) Third Law of Motion D) First Law of Motion
 
Answer & Explanation Answer: C) Third Law of Motion

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Q:

Which of the following is false with reference to a photo-voltaic cell?

A) It is another name as solar cell B) It can be used as infra-red detectors
C) It can store light energy in the form of electrical energy D) It converts electric energy into light energy
 
Answer & Explanation Answer: D) It converts electric energy into light energy

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Q:

Terminal velocity ________.

A) first increases before decreasing B) is constant
C) first decreases before increasing D) always keeps on increasing
 
Answer & Explanation Answer: B) is constant

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