EAMCET Engineering 2010 Solved Paper

Section: Physics

Question : 93 of 160

Marks: +1, -0

In an optical fibre, core and cladding were made with materials of refractive indices 1.5 and 1.414 respectively. To observe total internal reflection, what will be the range of incident angle with the axis of optical fibre?

0∘−60∘
0−48∘
0∘−30∘
0∘−82∘

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