How far in front of a concave mirror of focal length 10 cm , would you place a 2 cm pin in order to obtain an erect image 4 cm in height ?
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4
Answer:
So At -6.7cm distance from a concave mirror of focal length 10 cm should an object 2 cm long be placed in order to get an erect image 6 cm tall.
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26
Explanation:
the answer is 6
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