Physics, asked by kartikeswarlimal, 4 months ago

What is black when it’s clean and white when it’s dirty?

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Answered by harshvardhan0418

5

Answer:

A chalkboard (or blackboard). It's solid black when clean, and as you write on it with white chalk it becomes dirty. A chalkboard (or blackboard).

Answered by Mysteryboy01

3

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