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Write a short note on optical fibre....

Write a short note on optical fibre.

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R G PUBLICATION-RAY OPTICS AND OPTICAL INSTRUCMENTS-EXERCISE
  1. Give some examples of total internal reflection in nature.

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  2. What is optical fibres? What principle is used in it?

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  3. Write a short note on optical fibre.

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

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  5. Deduce the familiar thin lens formula 1/v-1/u=1/f.

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  6. What is dispersion by a prism. Write with a ray diagram.

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

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  8. What is hypermetropia Describe.

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  9. Draw the ray diagram of a simple microscope.

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  10. Write the working of a compound microscope with a ray diagram for the ...

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  11. Write the working principle of a telescope.

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  12. Derive lens maker's formula for a spherical surface.

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  13. For a simple microscope prove that magnification m=1+D//f.

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  14. For a compound microscope prove that magnification is multiplied.

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  15. Describe the working and construction of Galileos telescope.

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

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  17. Deduce the expression for refractive index n of a prism, which is give...

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  18. When an object is placed at a distance 6 cm from a concave lens a virt...

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  19. The angle of minimum deviation produced by a 60 o prism is 40 o ....

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  20. From power prove that for lens. P=P1+P2+P3+.........Pn ​

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