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 Physics Questions

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Q:

Radiocarbon dating technique is used to estimate the age of

A) fossils B) rocks
C) monuments D) soil
 
Answer & Explanation Answer: A) fossils

Explanation:

Radiocarbon dating also referred to as carbon dating or carbon-14 dating is a method for determining the age of an object containing organic material by using the properties of radiocarbon, a radioactive isotope of carbon.

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Q:

An image formed by a plane mirror, that cannot be obtained on a screen is called _______.

A) Virtual image B) Real image
C) Inverted image D) Erect image
 
Answer & Explanation Answer: A) Virtual image

Explanation:
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Q:

Which of the following has the lowest frequency?

A) Visible light B) Gamma rays
C) X­-rays D) Ultra violet rays
 
Answer & Explanation Answer: A) Visible light

Explanation:
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Q:

We are able to walk on earth without slipping because of

A) Gravitational force B) Frictional force
C) Viscous force D) Centrifugal force
 
Answer & Explanation Answer: B) Frictional force

Explanation:
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Q:

The quality or tone of a musical sound produced by a stringed instrument depends on

A) frequency of vibration B) length of the strings in the instrument
C) Amplitude of vibration D) waveform of the sound
 
Answer & Explanation Answer: D) waveform of the sound

Explanation:
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Q:

An ideal gas cannot be

A) liquified B) solidified
C) Both A & B D) None of the above
 
Answer & Explanation Answer: A) liquified

Explanation:

An ideal gas cannot be liquified because forces between the molecules are negligible.

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Q:

_______ optical data storage is a technology where data is stored in multiple layers in the optical disc.

A) 3D B) 30D
C) 300D D) 3000D
 
Answer & Explanation Answer: A) 3D

Explanation:
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Q:

Centrifugal force increases with

A) Temperature B) Pressure
C) Acceleration D) Humidity
 
Answer & Explanation Answer: C) Acceleration

Explanation:

Centrifugal force is the fictitious force that pulls out from the center on the body we feel while moving in the circular path. It increases with the rate of rotation of the axis i.e, acceleration of the body.

 

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