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The principal behind optical fibres is...

The principal behind optical fibres is

A

total internal reflection

B

total external reflection

C

both (a) and (b)

D

diffraction of light

Text Solution

Verified by Experts

The correct Answer is:
A, C
Optical fibres work on the principal of total internal reflection.
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  11. Magnification at least distance of distinct vision is 25 cm of a simpl...

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  12. Magnification of a compound is 30. Focal length of eyepiece is 5 cm an...

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  13. The astronomical microscope consists of objective and eyepiece. The fo...

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  14. The number of lenses in terrestrial telescope is

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  15. An achromatic combination of lenses is formed by joining

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  19. When a glass lens with mu = 1.47 is immersed in a troug of liquid, it ...

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