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Question

the magnification produced in a pinhole camera is 1/5.find the size of image,when the height of object is 20cm.ifthe length of the camera is 5 cm,find how far the object is from the pinhole?

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Solution

Dear student,
m = -v/u = -h_i/ho
1/5 = -h_i/20cm
h_i= 4 cm
Position of object =u = v/m
1/5 = -5 cm/u
u = 25 cm

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