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Define focus....

Define focus.

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BINA LIBRARY-Optics-I-EXERCISE
  1. By what length is the tube of a terrestrial telescope longer than the ...

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  2. Define the magnifying power of a telescope.

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  3. Define focus.

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  4. Draw a lebelled ray diagram to show the formation of image using a con...

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  5. Draw diagram to show formation of virtual image by a concave mirror.

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  6. Find an expression for the linear magnification of a real and a virtua...

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  7. Find an expression for lateral deviation.

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  8. What is the condition for total internal reflection?

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  9. What is the condition for total internal reflection?

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  10. Describe briefly the formation of mirage.

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  11. Establish the following relation for total deviation delta of a ray li...

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  12. What is meant by despersion of light?

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  13. Write a brieft note on formation of a rainbow.

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  14. If an eye produces too much covergence in the incident beam what is th...

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

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

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

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

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

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

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