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State the principle of which the …

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State the principle of which the working of an optical fiber is based? What are the necessary condition for this phenomenon to occur?

    • Posted by Kavitha Senthil 4 years, 10 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Gaurav Seth 4 years, 10 months ago

    (i) The working of optical fiber is based on total internal reflection.  Statement: When a light ray goes from denser to rarer medium at an angle greater than critical angle, the ray is totally reflected in first (denser) medium. This phenomenon is called total internal reflection. 

    (ii) Conditions:  (a) Ray of light must go from denser medium to rarer medium.  (b) Angle of incdience must be greater than critical angle (i.e.,i > C).v

     

    1Thank You

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