When a person stands 40 cm in front of cosmetic mirror, the direct image is twice...

Question

Question

When a person stands 40 cm in front of cosmetic mirror, the direct image is twice the size of the object. What is focal lengt

Answer 1

Answer #1

A cargmetic mirror is the concavemirror: Objeet oteo tances6= 40cm m = - 2 bo Image nupt be virtual erect, magnified o nust b

Answer 2

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