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)

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

Exam 33: Electromagnetic Waves

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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 21

The speed of light in vacuum is about:

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Question 22

A vertical automobile radio antenna is sensitive to electric fields that are polarized:

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Question 23

If n_water = 1.50 and n_glass = 1.33, then total internal reflection at an interface between this glass and water:

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Question 24

Which of the following types of electromagnetic radiation travels at the greatest speed in vacuum?

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Question 25

The diagram shows total internal reflection. Which of the following statements is NOT true?

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Question 26

The index of refraction of benzene is 1.80. The critical angle for total internal reflection, at a benzene-air interface, is about:

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Question 27

In a plane electromagnetic wave in vacuum, the ratio E/B of the amplitudes in SI units of the two fields is:

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Question 28

Light with an intensity of 1 kW/m² falls normally on a surface and is completely reflected. The radiation pressure is:

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Question 29

A company claims to have developed material that absorbs light energy without a transfer of momentum. Such material is:

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Question 30

Three polarizing sheets are placed in a stack with the polarizing directions of the first and third perpendicular to each other. What angle should the polarizing direction of the middle sheet make with the polarizing direction of the first sheet to obtain maximum transmitted intensity when unpolarized light is incident on the stack?

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Question 31

Three polarizing sheets are placed in a stack with the polarizing directions of the first and third perpendicular to each other. What angle should the polarizing direction of the middle sheet make with the polarizing direction of the first sheet to obtain zero transmitted intensity when unpolarized light is incident on the stack?

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Question 32

As used in the laws of reflection and refraction, the "normal" direction is:

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Question 33

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:

(Multiple Choice)

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Question 34

The electric field for a plane electromagnetic wave traveling in the +y direction is shown. Consider a point where is in the +z direction. The field is:

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Question 35

When the distance between a point source of light and a light meter is reduced from 6.0 m to 2.0 m, the intensity of illumination at the meter will be the original value multiplied by:

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Question 36

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 37

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

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Question 38

The theoretical upper limit for the frequency of electromagnetic waves is:

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Question 39

If the magnetic field in a plane electromagnetic wave is along the y axis and its component is given by B_m sin (kx - $\omega$ t), in SI units them the electric field is along the z axis its component is given by"

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Question 40

Showing 21 - 40 of 79

Exam 33: Electromagnetic Waves

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

The speed of light in vacuum is about:

A vertical automobile radio antenna is sensitive to electric fields that are polarized:

If nwater = 1.50 and nglass = 1.33, then total internal reflection at an interface between this glass and water:

Which of the following types of electromagnetic radiation travels at the greatest speed in vacuum?

The diagram shows total internal reflection. Which of the following statements is NOT true?

The index of refraction of benzene is 1.80. The critical angle for total internal reflection, at a benzene-air interface, is about:

In a plane electromagnetic wave in vacuum, the ratio E/B of the amplitudes in SI units of the two fields is:

Light with an intensity of 1 kW/m2 falls normally on a surface and is completely reflected. The radiation pressure is:

A company claims to have developed material that absorbs light energy without a transfer of momentum. Such material is:

As used in the laws of reflection and refraction, the "normal" direction 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 electric field for a plane electromagnetic wave traveling in the +y direction is shown. Consider a point where is in the +z direction. The field is:

When the distance between a point source of light and a light meter is reduced from 6.0 m to 2.0 m, the intensity of illumination at the meter will be the original value multiplied by:

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:

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

The theoretical upper limit for the frequency of electromagnetic waves is:

If the magnetic field in a plane electromagnetic wave is along the y axis and its component is given by Bm sin (kx - ω \omega ω t), in SI units them the electric field is along the z axis its component is given by"

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

If n_water = 1.50 and n_glass = 1.33, then total internal reflection at an interface between this glass and water:

Light with an intensity of 1 kW/m² falls normally on a surface and is completely reflected. The radiation pressure 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 relation n₁sin $\theta$ ₁ = n₂ sin $\theta$ ₂ which applies as a ray of light strikes an interface between two media, is known as:

If the magnetic field in a plane electromagnetic wave is along the y axis and its component is given by B_m sin (kx - $\omega$ t), in SI units them the electric field is along the z axis its component is given by"