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BINA LIBRARY-Optics-I-EXERCISE
- An object is kept at 0.2 m from a convex lens of focal length 0.15 m. ...
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- A double convex lens made of glass of refractive index 1.5 has both ra...
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- Calculate the focal length of the combination of a convex lens of foca...
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- A converging lens has focal length of 20 cm in air. It is made of a ma...
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- Two lenses of powers, 15D and +5D are in contact with each other formi...
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- The refractive index of a prism of angle 60 degree is 1.62 for sodium ...
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- A ray of light incident on an equilateral glass prism shows minimum de...
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- A ray of light passes through an equilateral prism such that the angle...
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- An astronomical telescope of magnifying power 10 consists of two thin ...
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- 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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