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The radius of curvature of a spherical m...

The radius of curvature of a spherical mirror is 20 cm. What is its focal length?

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An object is at a distance of 1 metre from the pole of a concave mirror. Its image is found to be one-third of the size of the object. Find the position of the image, radius of curvature of the mirror and its focal length.

A double convex lens is made of a glass of refractive index 1.55, with both faces of the same radius of curvature. Find the radius of curvature required, if the focal length is 20 cm.

BINA LIBRARY-Optics-I-EXERCISE
  1. What is astigmatism? How it can be removed?

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  2. What is astigmatism? How it can be removed?

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  3. The radius of curvature of a spherical mirror is 20 cm. What is its fo...

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  4. What is magnifying power of an astronomical telescope? Draw the necess...

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  5. Prove that 1/f=1/u+1/v in concave mirror for virtual image.

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  6. Prove the relationship1/f= 1/u + 1/v for a convex mirror.

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  7. Deduce the equation for the refraction at a spherical surface seperati...

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  8. Establish the lens maker's formula for a biconvex lens.

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  9. Deduce the relation 1/v-1/u=1/f for a concave lens.

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  10. Derive the lens formula 1/f=1/v-1/ufor a convex lens.

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  11. What is meant by power of a lens? What is its unit?

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  12. When two thin converging lenses of focal lengths f, and f, are held in...

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  13. What is meant by the angle of minimum deviation of a prism?

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  14. Find a relation between minimum deviation and the refractive index of ...

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  15. Explain why white light is dispersed while passing through a prism.

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  16. What are the two main defects of vision? State how these are rectified...

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  17. With the help of a labelled ray diagram, show the image formation by a...

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  18. Derive an expression for compound microscope's magnifying power.

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  19. Draw a labelled ray diagram of an astronomical telescope for a near po...

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  20. Write down the expression for astronomical magnifying power.

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