The sun is about 1.5* 1011 m away.The time for light to travel this distance is about:

A) 4.5 * 1019 s B) 8 s C) 8 min D) 8 hr E) 8 yr A) 4.5 * 1019 s B) 8 s C) 8 min D) 8 hr E) 8 yr

The relation n1sin $\theta$1 = n2 sin $\theta$2 which applies as a ray of light strikes an interface between two media, is known as:

A) Gauss' law B) Snell's law C) Faraday's law D) Cole's law E) law of sines A) Gauss' law B) Snell's law C) Faraday's law D) Cole's law E) law of sines

A ray of light in water (index n1)is incident on its surface (with air)at the critical angle.Some oil (index n2)is now floated on the water.The angle between the ray in the oil and the normal is:

A) sin-1(1.00) B) sin-1(1/n1) C) sin-1(1/n2) D) sin-1(n1/n2) E) sin-1(n2/n1) A) sin-1(1.00) B) sin-1(1/n1) C) sin-1(1/n2) D) sin-1(n1/n2) E) sin-1(n2/n1)

Exam 33: Electromagnetic Waves

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A clear sheet of polarizing material is placed on top of a second, similar sheet so that their polarizing axes make an angle of 30° with each other.The ratio of the intensity of emerging light to incident unpolarized light is:

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Question 1

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For a beam of light in air (n = 1)reflecting off glass (n = 1.5), what is Brewster's angle?

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Question 2

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The separation of white light into colors by a prism is associated with:

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Question 3

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When an electromagnetic wave meets a reflecting surface, the direction taken by the reflected wave is determined by:

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Question 4

If n_water = 1.33, what is the angle of refraction for the ray shown? $If n<sub>water</sub> = 1.33, what is the angle of refraction for the ray shown?$

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Question 5

The order of increasing wavelength for blue (b), green (g), red (r), and yellow (y)light is:

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Question 6

The index of refraction for diamond is 2.5.Which of the following is correct for the situation shown? $The index of refraction for diamond is 2.5.Which of the following is correct for the situation shown?$

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Question 7

Radio waves differ from visible light waves in that radio waves:

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Question 8

The sun is about 1.5* 10¹¹ m away.The time for light to travel this distance is about:

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Question 9

The relation n₁sin $\theta$ ₁ = n₂ sin $\theta$ ₂ which applies as a ray of light strikes an interface between two media, is known as:

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Question 10

A sinusoidal electromagnetic wave has an electric field whose rms value is 100 V/m.What is the instantaneous rate S of energy flow for this wave?

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Question 11

A point source emits electromagnetic energy at a rate of 100 W.The intensity 10 m from the source is:

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Question 12

The critical angle for total internal reflection at a diamond-air interface is 25°.Suppose light is incident at an angle of $\theta$ with the normal.Total internal reflection will occur if the incident medium is:

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Question 13

For linearly polarized light the plane of polarization is:

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Question 14

A ray of light passes through three media as shown.The speeds of light in these media obey:

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Question 15

The speed of light in vacuum is about:

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Question 16

The time averaged energy in a sinusoidal electromagnetic wave is:

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Question 17

A ray of light in water (index n₁)is incident on its surface (with air)at the critical angle.Some oil (index n₂)is now floated on the water.The angle between the ray in the oil and the normal is:

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Question 18

The units of index of refraction are:

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Question 19

The time for a radar signal to travel to the Moon and back, a one-way distance of about 3.8*10⁸ m, is:

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Question 20

Showing 1 - 20 of 83

Exam 33: Electromagnetic Waves

A clear sheet of polarizing material is placed on top of a second, similar sheet so that their polarizing axes make an angle of 30° with each other.The ratio of the intensity of emerging light to incident unpolarized light is:

For a beam of light in air (n = 1)reflecting off glass (n = 1.5), what is Brewster's angle?

The separation of white light into colors by a prism is associated with:

When an electromagnetic wave meets a reflecting surface, the direction taken by the reflected wave is determined by:

If nwater = 1.33, what is the angle of refraction for the ray shown?

The order of increasing wavelength for blue (b), green (g), red (r), and yellow (y)light is:

The index of refraction for diamond is 2.5.Which of the following is correct for the situation shown?

Radio waves differ from visible light waves in that radio waves:

The sun is about 1.5* 1011 m away.The time for light to travel this distance is about:

The relation n1sin θ\thetaθ 1 = n2 sin θ\thetaθ 2 which applies as a ray of light strikes an interface between two media, is known as:

A sinusoidal electromagnetic wave has an electric field whose rms value is 100 V/m.What is the instantaneous rate S of energy flow for this wave?

A point source emits electromagnetic energy at a rate of 100 W.The intensity 10 m from the source is:

The critical angle for total internal reflection at a diamond-air interface is 25°.Suppose light is incident at an angle of θ\thetaθ with the normal.Total internal reflection will occur if the incident medium is:

For linearly polarized light the plane of polarization is:

A ray of light passes through three media as shown.The speeds of light in these media obey:

The speed of light in vacuum is about:

The time averaged energy in a sinusoidal electromagnetic wave is:

A ray of light in water (index n1)is incident on its surface (with air)at the critical angle.Some oil (index n2)is now floated on the water.The angle between the ray in the oil and the normal is:

The units of index of refraction are:

The time for a radar signal to travel to the Moon and back, a one-way distance of about 3.8*108 m, is:

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If n_water = 1.33, what is the angle of refraction for the ray shown? $If n<sub>water</sub> = 1.33, what is the angle of refraction for the ray shown?$

The index of refraction for diamond is 2.5.Which of the following is correct for the situation shown? $The index of refraction for diamond is 2.5.Which of the following is correct for the situation shown?$

The sun is about 1.5* 10¹¹ m away.The time for light to travel this distance is about:

The relation n₁sin $\theta$ ₁ = n₂ sin $\theta$ ₂ which applies as a ray of light strikes an interface between two media, is known as:

The critical angle for total internal reflection at a diamond-air interface is 25°.Suppose light is incident at an angle of $\theta$ with the normal.Total internal reflection will occur if the incident medium is:

A ray of light in water (index n₁)is incident on its surface (with air)at the critical angle.Some oil (index n₂)is now floated on the water.The angle between the ray in the oil and the normal is:

The time for a radar signal to travel to the Moon and back, a one-way distance of about 3.8*10⁸ m, is: