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BINA LIBRARY-Optics-I-EXERCISE
- A near point of hypermetropic person is 50 cm from the eye. What is th...
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- An astronomical telescope uses two lenses of powers 10 dioptre and 1 d...
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- The focal length of a convex lens of R.I. 1.5 in air is 2 cm. The foca...
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- Time taken by sunlight to pass through a window of thickness 4 mm whos...
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- Radius of curvature of a convex mirror is 40 cm and the size of the ob...
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- A convex lens has a focal length f. It is cut into two parts along a l...
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- Two thin lenses of focal lengths f1, and f2 are placed co-axially in ...
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- The plane surface of a plano convex lens of focal length f is silvered...
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- The magnifying power of a telescope is m. If the focal length of the e...
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- When red glass is heated in a dark room it seems
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- Focal length of a convex lens will be maximum for
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- Rainbow is due to a combination of
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- An astronaut in a spaceship sees the sky as
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- The sky looks blue due to-
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- A convex lens of focal length 0.5 m and a concave lens of focal length...
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- An enlarged virtual image can be obtained only in
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- A convex mirror gives images which are
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- A vitrual image larger than the object can be produced by
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- A concave mirror forms an image of a real object. Which statement is w...
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- Give reasons why convex mirrors are generally used as driving mirrors.
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