5. If total internal reflection is happening, as in the case of fiber-optics, wh

Question

5. If total internal reflection is happening, as in the case of fiber-optics, what is ALWAYS the

angle of refraction?

a. The same as the angle of incidence

b. Not enough information is provided to know the answer

c. 1/2 of the angle of incidence

d. 90 deg

6. The polarization of a light beam describes the…

a. direction that the light is moving.

b. direction of the electric field of the light beam.

c. direction of the magnetic field of the light beam.

d. speed of the light beam.

7. You are underwater swimming in a pool about 1 meter below the surface. Due to the refractive

index difference between the water and the air above, the life guard thinks that

a. you are 1 meter below the surface.

b. you are less than 1 meter below the surface.

c. you are more than 1 meter below the surface.

d. you are floating above the water.

8. If our sun only generated light at a red wavelength of 650 nm, we would still see the

occasional rainbow. TRUE OR FALSE

9. According to Snell’s Law, when light is incident at an angle of 0 degrees on a slab of glass,

what is the angle of refraction?

a. 30 deg.

b. 15 deg.

c. 0 deg.

d. -15 deg.

10. Which of the following is a photon with the highest amount of energy?

a. Visible red light

b. Microwave

c. Infrared

d. Radiowave

Explanation / Answer

(5)

In the case of the angle of incidence reaches a value known as the critical angle the rays refracted to an angle of 90°. ( Total Internal Reflection )

Correct option is ( d )

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(6)

The polarization of a light beam describes the direction of the electric field of the light beam.

Correct option is ( b )

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(7)

Due to refraction, the object in the water appear to you are less than 1 meter below the surface.

Correct option is ( b )

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(8)

Given statement is False. Because, the rainbow generated by white light only

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(9)

According to Snell’s Law, when light is incident at an angle of 0 degrees on a slab of glass,

what is the angle of refraction will 0 degrees

Thus, the correct option is ( c)

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(10)

In given options, Visible red light has more energy as its frequency is higher

Correct option is ( a )

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