Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Communication

Question:

Options:

a

b

c

$n_1 > n_2$

Correct Answer:

$n_1 > n_2$

Explanation:

In an optical fibre, the inner core is more dense than the cladding. The function of the cladding is to provide a lower refractive index at the core interface in order to cause reflection within the core so that light waves are transmitted through the fiber.

so $n_1 > n_2$