Question

A Bulb of thermometer A is coated with Lamp Black and Bulb of thermometer B is coated with silver. Both the thermometers are placed in sunshine for equal time.
Which thermometer will show a higher rise in temperature?
What conclusion is obtained from the above observation​

Answer 1

Answer:

We know that black bodies are good heat absorber and radiator. While white bodies like silver(Ag) is not so good absorber of heat. Hence, The thermometer "A" which was coated with lamp-black show higher rise in temperature by its Mercury.