Heat Test - 25...

Cooking utensils are made up of 

A cotton sheet is ironed with hot electricity. How is energy transferred through the metal base of the iron to the sheet?

The process in which rate of transfer of heat is maximum is :

For an ideal conductor, thermal resistance is :

The lowest attainable fahrenheit temperature is

Statement-1
Radiation involves transfer of heat by electromagnetic waves.
Statement-2
Electromagnetic waves do not required any material medium for propagation.

Which of the follwing is the smallest rise in temperature?

If we place our hand below a lighted electric bulb. We feel warmer because of :

By which of the following methods could a cup of hot tea lose heat when placed on metallic table in a class room
a) conduction
b) convection
c) radiation
d) evaporation of liquid.

Assertion (A): When hot water is poured in a thick glass tumbler then the tumbler breaks.
Reason (R): Glass is a bad conductor of heat