A camera fitted with a lens of focal length 50 mm is being used to photograph a flower that is 5 cm in diameter. The flower is placed 20 cm in front of the camera lens.
At what distance from the film should the lens be adjusted to obtain a sharp image of the flower?
Focal length, f = 50 mm = 5 cm
Object distance, u =-20 cm
Image distance, v = ?
Putting these values in lens formula, we get:
Film should be adjusted at a distance of 6.66 cm behind the lens.
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