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Zolol [24]
3 years ago
12

A fiber-optic rod consists of a central strand of material surrounded by an outer coating. The interior portion of the rod has a

n index of refraction of 1.97. If all rays striking the interior walls of the rod with incident angles greater than 50.4° are subject to total internal reflection, what is the index of refraction of the coating?
Physics
1 answer:
matrenka [14]3 years ago
6 0

Answer:

The refractive index of the outer coating is 1.52.

Explanation:

Refractive index of interior part, n' = 1.97

critical angle, C = 50.4°

Let the refractive index of the coating is n.

Use the Snell's law,  

n\times sin r = n'\times sinC\\\\n\times sin 90 = 1.97 \times sin 50.4\\\\n = 1.52

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A small but measurable current of 5.8 × 10-10 A exists in a copper wire whose diameter is 3.0 mm. The number of charge carriers
swat32

Answer:

a) The current density ,J = 2.05×10^-5

b) The drift velocity Vd= 1.51×10^-15

Explanation:

The equation for the current density and drift velocity is given by:

J = i/A = (ne)×Vd

Where i= current

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b) Drift velocity, Vd = J/ (ne)

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8 0
3 years ago
Read 2 more answers
330 g of water at 55°c are poured into an 855 g aluminum container with an initial temperature of 10°
Olenka [21]
The final temperature of the system is 32.5°
we know,  H = mcT 
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c = Specific heat
T = Change in temperature
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The net heat remains constant i.e. 
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⇒ 330 x 1 x (45 - T) = 855 x \frac{900}{4200} x (T - 10) 

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⇒ - 513.21 T = - 16682

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3 0
3 years ago
If you make multiple measurements of your height, you are likely to find that the results vary by nearly half an inch in either
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Answer:

Height h= 1.7 m

Explanation:

Supposing we have to find height in meter.

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8 0
3 years ago
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