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 Physics Questions

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Q:

Which of the following describes an electric motor?

A) Is found in many appliances with moving parts, like a vacuum cleaner or a blender. B) Changes electric energy to mechanical energy.
C) Uses the interaction between a spinning coil of wire and magnet. D) Can be powered by a hand crank.
 
Answer & Explanation Answer: B) Changes electric energy to mechanical energy.

Explanation:

An electric motor is an electrical machine that converts electrical energy into mechanical energy.

                                   Which_of_the_following_describes_an_electric_motor1596165769.jpg image

Most electric motors operate through the interaction between the motor's magnetic field and electric current in a wire winding to generate force in the form of torque applied on the motor's shaft. 

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0 1409
Q:

For which of the following game, players must have the knowledge of Pascal's law?

A) Climbing B) Paragliding
C) Rafting D) Scuba diving
 
Answer & Explanation Answer: D) Scuba diving

Explanation:
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3 1407
Q:

Instrument for measuring wind velocity is called

A) Coulombmeter B) Anemometer
C) Cyanometer D) Chronometer
 
Answer & Explanation Answer: B) Anemometer

Explanation:
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1 1406
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  

Explanation:
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1 1406
Q:

_____ is same on every point on a rotating body.

A) Linear velocity B) Linear momentum
C) Angular torque D) Angular velocity
 
Answer & Explanation Answer: D) Angular velocity

Explanation:
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0 1402
Q:

Convex mirror is generally used in _____.

A) solar cookers B) opthalmoscope
C) reflector for head light D) rear view mirror
 
Answer & Explanation Answer: D) rear view mirror

Explanation:
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1 1401
Q:

Which one of the following is the correct sequence of passage of light in a compound microscope?

A) Condenser -Objective lens -Eye -piece -Body tube B) Objective lens -Condenser -Body tube -Eye piece
C) Condenser -Objective lens -Body tube -Eyepiece D) Eyepiece -Objective lens -Body tube -Mirror
 
Answer & Explanation Answer: C) Condenser -Objective lens -Body tube -Eyepiece

Explanation:
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2 1399
Q:

Instrument for measuring rainfall is called

A) Lucimeter B) Galactometer
C) Hyetometer D) Hygrometer
 
Answer & Explanation Answer: C) Hyetometer

Explanation:
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