Physics Questions

Q:

The bending of light when it passes around a corner or a slit is due to ______.

A) reflection B) refraction
C) diffraction D) total internal reflection
 
Answer & Explanation Answer: C) diffraction

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Q:

The power of an earthquake is expressed in terms of a magnitude on a scale called __________ scale.

A) Schmitt B) Hutton
C) Werner D) Richter  
 
Answer & Explanation Answer: D) Richter  

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Q:

Sudden fall in the barometric reading is an indication of _______.

A) Storm B) Scorching heat
C) Rain D) Clear weather
 
Answer & Explanation Answer: A) Storm

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Q:

The numerical value of a physical quantity is its _______________.

A) vector B) magnitude
C) direction D) property
 
Answer & Explanation Answer: B) magnitude

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Q:

Which one of the following processes is responsible for the glittering of air bubble rising through water?

A) Reflection of light B) Refraction of light
C) Total internal reflection of light D) Scattering of light
 
Answer & Explanation Answer: C) Total internal reflection of light

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Q:

What is the process of conversion of solid state directly to gaseous state called?

A) Evaporation B) Condensation
C) Sublimation D) Distillation
 
Answer & Explanation Answer: C) Sublimation

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Q:

Transformer is a device to convert

A) D.C. to A.C. B) Low voltage D.C. into high voltage D.C.
C) Low voltage A.C. into high voltage A.C. D) Mechanical energy into Electrical energy
 
Answer & Explanation Answer: A) D.C. to A.C.

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Q:

The reflector of a search light is a :

A) Convex mirror B) Concave mirror
C) Plane mirror D) Cylindrical mirror
 
Answer & Explanation Answer: B) Concave mirror

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