The vacuum between the double walls of a thermos flask re...
The vacuum between the double walls of a thermos flask reduces heat loss through
conduction and radiation
convection and conduction
radiation only
conduction only
Correct answer is B
No explanation has been provided for this answer.
The point beyond which a stretched spring does not return to its original length is called the...
Which of the following factors does not affect the the electric resistance of a wire? ...
In which of the following media does sound travel faster? ...
Control in nuclear reactors is effected with boron rods because rhe rods have the ability to ...
Ice of mass 10g at 5°C was completely converted to water at 0°C, calculate the quantity of h...