In a good thermos flask, heat loss is reduced through the...
In a good thermos flask, heat loss is reduced through the following features EXCEPT?
the lens surface
the insulating cork
silvered walls
the cork lid
Correct answer is A
The silver coating on the inner bottle of a thermos flask is used to prevent heat transfer by radiation
A body is said to be moving with uniform acceleration if it experiences equal ...
A man will exact the greatest pressure on a bench when he ...
The velocity ratio of an inclined plane where angle of inclination in θ is ...
Production of x-ray tube begins with ...
The rise or fall of a liquid in a narrow tube is because of the ...
In a series R - C circuit, the resistance of the resistor is 4 Ω and capacitive reactance is 3...