Three objects coloured black, gray and white can withstand hostile conditions upto 280 0 ∘ C . These objects are thrown into a furnace where each of them attains a temperature of 200 0 ∘ C . Which object will glow brightest?

Question

Three objects coloured black, gray and white can withstand hostile conditions upto 280 0 ∘ C . These objects are thrown into a furnace where each of them attains a temperature of 200 0 ∘ C . Which object will glow brightest?, The white object, The black object, All glow with equal brightness, Gray object.

MARKS App · Accepted Answer

Black object. That which can absorb maximum can also emit maximum. (Kirchhoff's law).

Search any question & find its solution

Looking for more such questions to practice?