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⁞ Physics

General Science ➤ Physics ➤ 1
Question 16
Q16.  Nuclear sizes are expressed in a unit named
 

Answer :  Fermi


Fermi - A unit of length equal to 10-15 meter (one femtometer), used in nuclear physics. It is similar to the diameter of a proton.
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Question 17
Q17.  Mirage is due to
 

Answer :  unequal heating of different parts of the atmosphere


Mirage is due to unequal heating of different parts of the atmosphere.
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Question 18
Q18.  Metals are good conductors of electricity because
 

Answer :  they contain free electrons


Metals are good conductors of electricity because they contain free electrons.
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Question 19
Q19.  If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same
 

Answer :  momentum


If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same momentum.
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Question 20
Q20.  Rectifiers are used to convert
 

Answer :  Alternating current to Direct current


Rectifiers are used to convert Alternating current to Direct current.
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