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How far apart are an object and an image formed by

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Answer #1

Image is real means q is +ve

M = -q/p = 2

q = 2p

1/p + 1/q = 1/f

1/p + 1/2p = 1/0.46

3/2p = 1/0.46

p = 3*0.46/2 = 0.69 m = 69 cm

q = 2p = 138 cm

so objec and image are separated by = 69 + 138 = 207 cm

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