In a projection lantern of focal length f, the object distance u, is such that

Physics

JAMB 1994

A. u > 2f > f
B. u < f < 2f
C. u = f < 2f
D. f < u < 2f

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Correct Answer: Option D

Explanation

the object is always located between the optical center of the lens and twice the focal length. or the object is placed at a point between F and 2F to produce a real, enlarged, upright image of the inverted object.

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In a projection lantern of focal length f, the object distance u, is such that

Correct Answer: Option D

Explanation

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