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An optical fibre (RI = 1.72) is surround...

An optical fibre (RI = 1.72) is surrounded by a glass coating (RI= 1.50). Find the critical angle for total internal reflection at the fibre-glass interface.

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`theta_C = sin^(-1) (75 )/( 86 )`
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AAKASH SERIES-RAY OPTICS-PROBLEMS ( LEVEL-I)
  1. Calculate the refractive index of material with respect to air if its ...

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  2. The velocities of light in two different media are 2*10^8m/s and 2.5 *...

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  3. An optical fibre (RI = 1.72) is surrounded by a glass coating (RI= 1.5...

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  4. A ray of light travelling in glass (mug=3//2) is incident on a horizon...

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  5. A liquid of refractive index 1.5 is poured into a cyclindrical jar of ...

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  6. The radii of curvature of a lens are + 20 cm and + 30 cm. The material...

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  7. The radii of curvature of a lens are + 20 cm and + 30 cm. The material...

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  8. An object of size 3.0 cm is placed 14 cm in front of a concave lens of...

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  9. A concave - convex lens has faces of radii 4 cm and 3 cm respectively ...

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  10. A concave - convex lens has faces of radii 4 cm and 3 cm respectively ...

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  11. A concave - convex lens has faces of radii 4 cm and 3 cm respectively ...

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  12. If the angle of prism is 60^@ and the angle of minimum deviation is al...

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  13. A ray of light passing through a prism having refractive index sqrt2 s...

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  14. A ray of light passes through an equilateral glass prism, such that th...

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  15. A ray of light is incident at an angle of 60^(@) on the face of a pris...

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  16. A ray of light is incident normally on one of the refracting surfaces ...

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  17. For an equilateral prism, it is observed that when a ray strikes grazi...

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  18. A flint glass prism and a crown glass prism are to be combined in such...

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  19. An air bubble is seen inside a solid sphere of glass (n=1.5) of 4.0 cm...

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  20. A 5.0 diopter lens forms a virtual image which is 4 times the object p...

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