Physics Questions

Q:

What does it mean if a micrograph is false colored?

Answer

If a micrograph is false-colored, it means that the computer has created the colour for the object since we know that the electron microscopes sees only black and white colours.

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Q:

Rear view mirror of car is convex or concave?

A) Convex B) Concave
C) Both A & B D) Can't be determined
 
Answer & Explanation Answer: A) Convex

Explanation:

The side view mirror, in all the vehicles we use only convex mirror. This mirror makes the objects and small to show them in the mirror. That's why in all such mirrors, "Ojects in the mirror are closer than they appear."

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Q:

If the current flowing through a circuit is 0.6 A for 6 mins, the amount of electric charge flowing through it is .......

A) 360C B) 216 C
C) 60 C D) 36 C
 
Answer & Explanation Answer: B) 216 C

Explanation:
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Q:

Increased wind speed is accompanied by a reduced air _____________.

A) humidity B) pressure
C) density D) aridity
 
Answer & Explanation Answer: B) pressure

Explanation:
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Q:

What are the two kinds of Rotatory motion?

A) Spin and Vibrational motion B) Spin and Projectile motion
C) Spin and Orbital motion D) Spin and Translatory motion
 
Answer & Explanation Answer: C) Spin and Orbital motion

Explanation:
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Q:

The humidity of the air depends upon

A) Weather B) Temperature
C) Location D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

Humidity means the amount of watervapour present in the atmosphere. It depends on weather, location and temperature of the place.

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Q:

A circuit breaker is a

A) Switch B) Resistor
C) Fuse D) Resettable protective device
 
Answer & Explanation Answer: D) Resettable protective device

Explanation:

A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by excess current from an overload.

 

circuit_breaker_is_a1600689504.jpg image

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Q:

The term photon refers to

A) light ray B) sub atomic particle
C) radiation D) None of the above
 
Answer & Explanation Answer: B) sub atomic particle

Explanation:

The photon is a type of elementary particle, the quantum of the electromagnetic field including electromagnetic radiation such as light, and the force carrier for the electromagnetic force. The photon has zero rest mass and always moves at the speed of light within a vacuum.

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