1
Q:

Which of the following devices helps to maintain a potential difference across a conductor?

A) Galvanometer B) Ammeter
C) Voltmeter D) A cell or battery

Answer:   D) A cell or battery



Explanation:
Subject: Physics
Exam Prep: Bank Exams
Q:

In Force equation, F is equal to

 

A) ma B) mv
C) u+at D) mgh
 
Answer & Explanation Answer: A) ma

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Q:

Sound CANNOT travel through

A) Air B) Vacuum
C) Liquid D) Solid
 
Answer & Explanation Answer: B) Vacuum

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Q:

Mechanical energy is the sum of

A) kinetic energy + heat energy B) kinetic energy + potential energy
C) potential energy + heat energy D) chemical energy + electrical energy
 
Answer & Explanation Answer: B) kinetic energy + potential energy

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Q:

The unit of power used in industry is

A) Joule B) Watts
C) Horse power D) Kilowatts
 
Answer & Explanation Answer: C) Horse power

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Q:

The capacity to do work is called

A) Pressure B) Force
C) Power D) Energy
 
Answer & Explanation Answer: D) Energy

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Q:

To hear a distinct echo the time interval between the original sound and the reflected sound must be at least

A) 0.2 second B) 1 second
C) 0.1 second D) 2 seconds
 
Answer & Explanation Answer: C) 0.1 second

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0 5
Q:

If the Distance-Time graph is a curve then it represents _______________.

 

A) uniform speed   B) constant displacement  
C) uniform momentum   D) non-uniform speed
 
Answer & Explanation Answer: B) constant displacement  

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Q:

What is the heat released by a heating filament rated 20 W when it is kept on for 2 seconds?

 

A) 40 B) 10
C) 80 D) 20
 
Answer & Explanation Answer: A) 40

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