Answer(1)
If a carved black utensil is heated to high
temperature and then brought in dark then:
(1) Both utensil and its carving will shine
(2) Only carving will shine
(3) Only utensil will shine
(4) None of the utensil and carving will shine.
Both utensil and its carving will shine.
The reason is that the thermal radiation are emitted spontaneously by many ordinary objects.
Therefore this phenomenon can be called as black-body radiation.
When a body absorbs so much heat then it emits thermal radiations according to its temperature.
