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 Physics Questions

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Q:

An object with a constant speed

A) is not accelerated B) might be accelerated
C) is always accelerated D) also has a constant velocity
 
Answer & Explanation Answer: B) might be accelerated

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Q:

In case of uniform circular motion, the acceleration is

A) Variable in magnitude but constant in direction B) Constant in magnitude and directed radially inwards
C) Variable in magnitude but tangential to the circle D) Zero
 
Answer & Explanation Answer: A) Variable in magnitude but constant in direction

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Q:

Max well is the unit of

A) intensity of magnetization B) permeability
C) magnetic flux D) magnetic susceptibility
 
Answer & Explanation Answer: C) magnetic flux

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Q:

The composition of electrician solder is

A) lead-37%, tin-63% B) Iron-37%, tin-63%
C) lead-37%, Steel-63% D) Steel-37%, copper-63%
 
Answer & Explanation Answer: A) lead-37%, tin-63%

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6 3669
Q:

According to Rutherford the radius of the nucleus is about ______ than the radius of the atom.

 

A)  105 times greater B) 105 times lesser
C) 109 times greater D) 107 times greater
 
Answer & Explanation Answer: B) 105 times lesser

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Q:

Which results in an increase in power?

A) doing more work in less time. B) doing less work in more time.
C) doing less work in less time. D) doing more work in more time.
 
Answer & Explanation Answer: A) doing more work in less time.

Explanation:

Doing more work in less time, results in an increase in power to do a work.

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Q:

What will be the acceleration produced when a force of 21 N is applied on an object of mass 3 kg?

 

A) 0.7 m/s2 B) 7 m/s2
C) 0.007 m/s2 D) 70 m/s2
 
Answer & Explanation Answer: B) 7 m/s2

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Q:

Which of the following is a scalar quantity

A) Displacement B) Electric field
C) Acceleration D) work
 
Answer & Explanation Answer: D) work

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