Question

Calculate the numerical aperture of an optical fibre whose core and cladding are made of materials of refractive index 1.6 and 1.5 respectively. *

1 point

0.55677

55.77

0.2458

0.647852 up​

Answer 1

( 1sqrt(n1^2-n2^2)

Numerical aperture=0

0.55677