Q: What is the critical angle of incidence (in degrees) of a fiber optic cable when the refractive index of core and cladding are 3.2 and 1.6 respectively? फाइबर ऑप्टिक केबल में महत्वपूर्ण आपतन कोण (डिग्री में) क्या है यदि कोर के अपवर्तक सूचकांक और अनुलग्नक क्रमश: 3.2 और 1.6 है?
A.
15
B.
30
C.
45
D.
60
Correct Answer:
Option B -
Explanations:
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