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an object is 9 cm high and is placed 27 cm in front of a concave lens of focal length -18 cm. what is the height of the image ?
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an object is 9 cm high and is placed 27 cm in front of a concave lens of focal length -18 cm. what is the height of the image ?

User Narender
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6 votes
ummm is there a picture
User Mark Larter
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