Question

Himanshu wanted to boil water but he had run out of gas. He now has two options - either to use a black colored container or a white colored container to heat water under the sun.

Which of the following is correct?

• A. He should use a black coloured container.
• B. He should use a white coloured container.
• C. Either of the containers will take same amount of time.
• D. It depends whether it is before noon or after noon.

Answer 1

The correct option is A

He should use a black coloured container.

We know that the temperature of a body rises with the absorption of heat energy and that a black body is a good absorber of heat energy. Hence, the rise in temperature of the body will be faster in the case of a black coloured container.