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3 years ago

Total internal reflection can most accurately be described as...

Physics

1 answer:

Phoenix [80]3 years ago

4 0

Answer:

a. reflection of all the light at a surface.

Explanation:

When light rays passing from the denser medium to the rarer medium and the angle of incidence is greater than the critical angle, the refraction of light does not take place and the incident ray is totally reflected back into the denser medium. This phenomenon is called total internal reflection.

There are two conditions that need to be fulfilled in order for the total internal reflection to take place:

1. The ray of light should be incident from denser to rarer medium.

2. The angle of incidence should be greater than the critical angle.

Therefore, the correct option will be:

a. reflection of all the light at a surface.

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Answer

given,

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λ = 0.870 - 0.540

λ = 0.33 m

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v = f x λ

340 = f x 0.33

$f =\dfrac{340}{0.33}$

f = 1030.3 Hz

a) phase difference

the expression of phase difference is given by

$\phi = \dfrac{2\pi}{\lambda}\ \delta$

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now,

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3 years ago

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vlabodo [156]

To solve this problem it is necessary to apply the concepts given in the kinematic equations of movement description.

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At the same time we know that the acceleration is given as the change of speed in a fraction of the time, that is

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Where

$\alpha =$ Angular acceleration

$\omega =$ Angular velocity

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Our values are

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At the same time the angular acceleration would be

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$\alpha = \frac{66.67}{6}$

$\alpha = 11.11rad/s^2$

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