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A six feet tall lady wants to see her full image in a plane mirror . The minimum length of the mirror will be ?

A6 feet

B12 feet

C4 feet

D3 feet

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Answer and explanation

Correct Answer: D: 3 feet

Explanation: The correct answer is D: 3 feet. A six-foot tall lady needs a minimum mirror length of 3 feet (half her height) to see her full image. This is because light reflects at equal angles, so a mirror half the person's height is sufficient.

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