Q.27. Where must be an object placed so that a convex lens acts as a lens of
(a) cine projector
(b) photograhic camera?

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Solution

Dear student,

For a projector the object should be placed between f and 2f so that a real, magnified and inverted image is formed at 2f.

For a photographic camera the object is placed beyond 2f so that an inverted, real and diminished image is formed between f and 2f.

Regards

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Q.27. Where must be an object placed so that a convex lens acts as a lens of (a) cine projector (b) photograhic camera?

Dear student, For a projector the object should be placed between f and 2f so that a real, magnified and inverted image is formed at 2f. For a photographic camera the object is placed beyond 2f so that an inverted, real and diminished image is formed between f and 2f. Regards

Q.27. Where must be an object placed so that a convex lens acts as a lens of
(a) cine projector
(b) photograhic camera?

Dear student,

For a projector the object should be placed between f and 2f so that a real, magnified and inverted image is formed at 2f.

For a photographic camera the object is placed beyond 2f so that an inverted, real and diminished image is formed between f and 2f.

Regards