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Question : Why does a black board appears black in colour?

Option 1: It reflects black colour

Option 2: It absorbs black colour

Option 3: It reflects all colours

Option 4: It absorbs all the colours


Team Careers360 13th Jan, 2024
Answer (1)
Team Careers360 22nd Jan, 2024

Correct Answer: It absorbs all the colours


Solution : The correct option is it absorbs all colours.

When light, which is a blend of different wavelengths that correspond to different colors hits the blackboard, a sizeable percentage of it is absorbed, and very little of it is reflected. The surface's characteristically dark look, which we interpret as black, is caused by the absence of reflected light. Usually a body appears black because it absorbs all the light radiations and reflects a very small portion of it.

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