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 Physics Questions

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Q:

What is measured with the Nephometer?

 

A) volume of rainfall B) Cloud volume and speed
C) Salinity of Sea D) All options are correct.
 
Answer & Explanation Answer: B) Cloud volume and speed

Explanation:
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Q:

Which of the following represents a relation for ‘heat lost = heat gained’?

 

A) Principle of thermal equilibrium B) Principle of colors
C) Principle of calorimetry D) Principle of vaporization
 
Answer & Explanation Answer: C) Principle of calorimetry

Explanation:

Heat lost by hot object = Heat gained by cold object

where we ignore heat gained or lost from/to the surroundings.

The study of heat gained and lost in this manner is often called Calorimetry.

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Q:

Calculate the pressure (in Pa) if a thrust of 1000 N is applied to an area of 5 sq.m.

 

A) 200 B) 50
C) 100 D) 25
 
Answer & Explanation Answer: A) 200

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Q:

Which of the following electromagnetic waves has minimum wavelength?

 

A) Alpha B) Gamma
C) Infrared D) X-rays
 
Answer & Explanation Answer: B) Gamma

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Q:

Which instrument is used to measure humidity?

 

A) Pyrometer B) Hydrometer
C) Hygrometer D) Calorimeter
 
Answer & Explanation Answer: C) Hygrometer

Explanation:

Hygrometer is used for measuring humidity of air.

 

 

 

 

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Q:

____ is not a type of heat transfer.

 

A) Diffusion B) Reflection
C) Convection D) Radiation
 
Answer & Explanation Answer: B) Reflection

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Q:

Any body kept in a fluid experiences an upward force called _____________.

 

A) torque B) moment
C) pressure D) upthrust
 
Answer & Explanation Answer: D) upthrust

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Q:

Generally atomic radius is measured in which unit?

 

A) Fermi B) Millimeter
C) Angstrom D) Micrometer
 
Answer & Explanation Answer: C) Angstrom

Explanation:
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