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Q

Which one of the statement is incorrect regarding mass.

(1)  

It is scalar quantity

(2)  

Value of mass not depends on gravity

(3)  

mass of a body is given by m=\frac{m_o}{\left (1-\frac{v^2}{c^2} \right )}, here symbol have their usual meaning.

(4)  

mass can never be zero.

Answers (1)
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Option (3) is correct. 

Because the "m" here is relativistic mass and m_{0} is rest mass.This equation tells about the relativistic mass change when an object travels at a very high speed. Hence this is incorrect about the mass. 

Also mass is a scalar quantity and it can not be zero, because according to law f conservation od mass, Mass can neither be created nor destroyed.

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