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  • Q.4 A concave mirror of focal length 20 cm forms an image twice the size of the object. The position of the object will be at:(a) 25 cm(b) 40 cm(c) 10 cm(d) At infinity​

Q.4 A concave mirror of focal length 20 cm forms an image twice the size of the object. The position of the object will be at:(a) 25 cm(b) 40 cm(c) 10 cm(d) At infinity​

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shubham.krishnan

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