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What is critical angle for a material of...

What is critical angle for a material of refractive index `sqrt(2)` ?

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If C is critical angle.
`sin C=(1)/(sqrt2)`
`rArr C=45^(@)`
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MODERN PUBLICATION-RAY OPTICS AND OPTICAL INSTRUMENTS-Revision Exercises (Short Answer Questions)
  1. Prove that mu = (1)/(sin C)' where C is the critical angle.

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  2. What is total internal reflection ? What are its conditions ? Establis...

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  3. What is critical angle for a material of refractive index sqrt(2) ?

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  4. What is optical fibre ? On what principle it works ? Give two applicat...

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  5. Explain the term critical angle for a pair of media. Derive a relation...

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  6. State the conditions under which total internal reflection occurs. One...

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  8. Obtain an expression for focal length of a combination of thin lenses ...

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  10. Draw the schematic diagram of a Cassegrain telescope.

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  11. Deduce the equivalent focal length of two convex lenses of focal lengt...

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  12. An equiconvex lens of refractive index mu(1), focal length 'f' and ra...

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  13. The image of a candle is formed by a convex lens on a screen. The lowe...

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  14. A figure divided into squares, each of size 1.0 mm^2 is being viewed a...

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  15. Two monochromatic rays of light are incident normally on the face AB o...

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  16. Obtain an expression for the combined focal length for two thin convex...

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  17. लेंस समीकरण (1)/(v) -(1)/(u) =(1)/(f) की सहायता से दर्शाइए कि अवतल ल...

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  18. A ray of light falling at an angle of 50^@ is refracted through a pris...

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  19. How does angle of deviation vary with the angle of incidence in case o...

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  20. Sky appears blue in colour. Explain.

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