Physics Questions

Q:

What is the unit of the physical quantity, Electrical conductance?

A) lux B) ohm
C) farad D) siemens
 
Answer & Explanation Answer: D) siemens

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Q:

In nuclear reactor, cadmium rods are used as which of the following?

A) Fuel B) Moderator  
C) Controller   D) Lubricant
 
Answer & Explanation Answer: C) Controller  

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Q:

A person holding a pen in his left hand sees his reflection in the mirror holding the pen in his right hand. This is due to which of the following phenomena?

A) Diffused reflection B) Total internal reflection
C) Lateral inversion D) Refraction
 
Answer & Explanation Answer: C) Lateral inversion

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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:

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:

The force ultimately responsible for mass movement

A) erosion B) gravity
C) deposition D) weathering
 
Answer & Explanation Answer: B) gravity

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Q:

In a qualitative way, the tendency of undisturbed objects to stay at rest or to keep moving with the same velocity is called _________.

A) force B) acceleration
C) friction D) inertia
 
Answer & Explanation Answer: D) inertia

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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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