If the strength of gravity is 9.8 newtons per kilogram, that means:

Physics

2 answers:

PtichkaEL [24]3 years ago

8 0

Each kilogram of mass weighs about 9.8 newtons ... ON EARTH.

Igoryamba3 years ago

4 0

Here, E<span>ach kilogram of mass weighs 9.8 newtons as it's unit value of it.

In short, Your Answer would be Option D

Hope this helps!</span>

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Complete Question

The complete question is shown on the first uploaded image

Answer:

$\theta_{max} =18.38^o$

New $n_{cladding} =1.491$

Explanation:

From the question we are told that

The refractive index of the core is $n_{core} = 1.497$

The refractive index of the cladding is $n_{cladding} = 1.421$

Generally according to Snell's law

$n_{core} * sin(90- \theta) = n_{cladding} * sin (90)$

Where $\theta_{max}$ is the largest angle a largest angle a ray will make with respect to the interface of the fiber and experience total internal reflection