Question

Observe the picture of the coin. Why does it appear dull? Explain the reason.

Answer 1

Answer:

the mirror is equal to the distance of the image in

Answer 2

Explanation:

As they are exposed to the environment, pennies become coated with a layer of copper oxide, making them look tarnished (with a dull, brown, dirty appearance). Copper oxide dissolves in a mixture of weak acid and table salt.

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