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kirill [66]
3 years ago
9

A light beam has speed c in vacuum and speed v in a certain plastic. The index of refraction n of this plastic is

Physics
1 answer:
Mnenie [13.5K]3 years ago
3 0

Answer:

n = \frac{c}{v}

Explanation:

Refractive Index: It is a measure to find how fast the light travels through a medium. It is ration of the speed of light in vacuum to speed of light in the medium. Speed of light is not constant and varies depending on the density of the medium.

In vacuum the speed of light is 300000 km/s and is denoted by c. When the light beam enters any medium the speed will decrease. Here it is given that the speed in plastic is v. Thus the refractive index(n) is given as:

n = \frac{c}{v}

It is a dimensionless no.

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anastassius [24]

Answer: There is two (PO4) in the formula

Explanation:

Just be aware of the difference between numbers to the right and left: 5Mg3 means there are a total of 5 Mg (if 3 is a number in the bottom left) the 3 in (PO4) means there are 3 PO4 but because of the 2 it could mean there are 6.

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3 years ago
At what distance along the z-axis is the electric field strength a maximum?
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<span>(x^2 + R^2) - 3*x^2 = 0 </span>

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