Question 1 (1 point) When light encounters a boundary, leaving one transparent m

Question

Question 1 (1 point)

When light encounters a boundary, leaving one transparent material for another transparent
material of lower refractive index

Question 1 options:

It is always refracted towards the normal.

It is always refracted away from the normal.

Its direction is unpredictable.

It is absorbed. ,

Question 2 (1 point)

A radio signal is broadcast at a frequency of 80 MHz (8.0 x 107 cycles per second). How far
will this signal travel in 67 ms? (ms is milliseconds)

Question 2 options:

3.0 x 108 m

2.0 x 107 m

80 m

67 m ,

Question 4 (1 point)

Light enters a sheet of with an index of refraction or 1.40 at an angle of 26o . What is the sine of the angle of refraction?

Your Answer:_____________

Question 5 (1 point)

An object is located 3.8 m in front of a plane mirror. The image formed by the mirror appears to be

Question 5 options:

Question 6 (1 point)

A ray of light strikes a plane mirror perpendicular to the mirror. What is the angle of reflection?

Question 6 options:

Question 7 (1 point)

A laser beam strikes a plane's reflecting surface with an angle of incidence of 43°. What is the angle between the incident ray and the reflected ray?

Question 7 options:

It is always refracted towards the normal.

It is always refracted away from the normal.

Its direction is unpredictable.

It is absorbed. ,

Explanation / Answer

1)

Light bends at an angle when it traveles from one medium to another. The size of the angle depends on refractive index of the medium. Light bends towards the normal when the refractive index of the second medium is higher than first medium and vice versa.

So answer is (b)

The light bends away from the normal when the refractive index of the second medium is lower than first medium.

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