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Photograph of the ground are taken form an air-craft ,flying at an altitude of 2000 m by a camera with a lens of focal length `50 cm`. The size of the film in the camera is `18xx18cm`.What area of the ground can be photography by this camera at any one time.

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The correct Answer is:
`1 km^(2)`
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Photograph of the ground ar taken form an air-craft ,flying at an altutude of 2000m by a camera with a lens of focal length 50cm .The size of the film in the camera si 18xx18cm .What area of the ground can be photography by this camera at any one time.

An aircraft flying at a altitude of 2000 metre, takes the photographs of the ground by a camera with a lens of focal length 0.5 m. The size of the film in the camera is 12 cm xx 12 cm . What area of the ground can be photographed by this camera at any time ?

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Find the focal length and power of a convex lens, which when placed in contact with a concave lens of focal length 25 cm forms a real image 5 times the size of the object placed 20 cm from the combination.

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PHYSICS GALAXY - ASHISH ARORA-GEOMETRICAL OPTICS-Unsolved Numerical Problems
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