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AIIMS 2006
Exam
AIIMS
Year
2006
Subject
Physics
Chapter
Thermal Properties of Matter

AIIMS 2006 · Physics · Thermal Properties of Matter

Three objects coloured black, gray and white can withstand hostile...

Three objects coloured black, gray and white can withstand hostile conditions upto 2800∘C2800^{\circ} \mathrm{C}. These objects are thrown into a furnace where each of them attains a temperature of 2000∘C2000^{\circ} \mathrm{C}. Which object will glow brightest?

Options

  1. AThe white object
  2. BThe black object
  3. CAll glow with equal brightness
  4. DGray object.

Correct answer

B. The black object

Step-by-step solution

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