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 Physics Questions

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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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Filed Under: Physics
Exam Prep: Bank Exams

0 1963
Q:

Electrical Arcing occurs when

Answer

An electric arc is a visible plasma discharge between two electrodes that is caused by electrical current ionizing gasses in the air. Electric arcs occur in nature in the form of lightning.

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Subject: Physics Exam Prep: AIEEE , Bank Exams , GATE
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0 1962
Q:

For which one of the following does the centre of mass lie outside the body?

A) A fountain pen B) A cricket ball
C) A ring D) A book
 
Answer & Explanation Answer: C) A ring

Explanation:

For balancing the weight of ring, you need to put your finger or any solid object inside the ring so that you will be able to sustain their own weight because they are not able to sustain their own weight.so its centre of mass lies outside the body.

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Exam Prep: Bank Exams

0 1958
Q:

Supercooling is cooling of liquid _____.

A) below melting point B) below freezing point
C) at melting point D) above melting point
 
Answer & Explanation Answer: B) below freezing point

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2 1956
Q:

Current in a conductor can be increased by

A) increasing the voltage across it. B) reducing its resistance.
C) both A and B D) none of the above
 
Answer & Explanation Answer: C) both A and B

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4 1956
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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Filed Under: Physics
Exam Prep: Bank Exams , AIEEE

0 1953
Q:

If objects appear enlarged and inverted in a rear view mirror, then which type of mirror is used?

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

Explanation:
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3 1952
Q:

In projectile motion, the total flight time is _______.

A) equal to the time required to reach the maximum height B) thrice the time required to reach the maximum height
C) four times the time required to reach the maximum height D) twice the time required to reach the maximum height
 
Answer & Explanation Answer: D) twice the time required to reach the maximum height

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1 1951