Light with an intensity of 1 kW/m2 falls normally on a surface with an area of 1 cm2 and is completely absorbed. The force of the radiation on the surface is:

A) 3.3 * 10-11 N B) 1.7 * 10-10 N C) 3.3 *10-10 N D) 6.7 *10-10 N E) 1.0 *10-4 N A) 3.3 * 10-11 N B) 1.7 * 10-10 N C) 3.3 *10-10 N D) 6.7 *10-10 N E) 1.0 *10-4 N

Exam 33: Electromagnetic Waves

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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?

(Multiple Choice)

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Question 61

The time averaged energy in a sinusoidal electromagnetic wave is:

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Question 62

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

(Multiple Choice)

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Question 63

Radio waves of wavelength 300 m have a frequency of:

(Multiple Choice)

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Question 64

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

(Multiple Choice)

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Question 65

The magnetic field in a sinusoidal light wave has an amplitude of 3.3 * 10^-7T. The intensity of the wave is:

(Multiple Choice)

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Question 66

If the electric field in a plane electromagnetic wave is along the y axis and its magnitude is given by E_msin (kx + $\omega$ t) in SI units, then the magnetic field is along the z axis and its magnitude is given by:

(Multiple Choice)

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Question 67

Light with an intensity of 1 kW/m² falls normally on a surface with an area of 1 cm² and is completely absorbed. The force of the radiation on the surface is:

(Multiple Choice)

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Question 68

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

(Multiple Choice)

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Question 69

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

(Multiple Choice)

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Question 70

Polarization experiments provide evidence that light is:

(Multiple Choice)

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Question 71

As light goes from one medium to another, it is bent away from the normal. Then:

(Multiple Choice)

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Question 72

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 $\degree$ with each other. The ratio of the intensity of emerging light to incident unpolarized light is:

(Multiple Choice)

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Question 73

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

(Multiple Choice)

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Question 74

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

(Multiple Choice)

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Question 75

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:

(Multiple Choice)

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Question 76

An electromagnetic wave is generated by:

(Multiple Choice)

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Question 77

A transmitter consists of an LC circuit with an inductance of 15 µH and a capacitance of 23 pF. What is the wavelength of the electromagnetic waves it emits?

(Multiple Choice)

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Question 78

Which of the following is NOT true for electromagnetic waves?

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Question 79

Of the following human eyes are most sensitive to:

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Question 80

Showing 61 - 80 of 83

Exam 33: Electromagnetic Waves

The time averaged energy in a sinusoidal electromagnetic wave is:

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

Radio waves of wavelength 300 m have a frequency of:

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

The magnetic field in a sinusoidal light wave has an amplitude of 3.3 * 10-7 T. The intensity of the wave is:

If the electric field in a plane electromagnetic wave is along the y axis and its magnitude is given by Em sin (kx + ω \omega ω t) in SI units, then the magnetic field is along the z axis and its magnitude is given by:

Light with an intensity of 1 kW/m2 falls normally on a surface with an area of 1 cm2 and is completely absorbed. The force of the radiation on the surface is:

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

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

Polarization experiments provide evidence that light is:

As light goes from one medium to another, it is bent away from the normal. Then:

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 °\degree° with each other. The ratio of the intensity of emerging light to incident unpolarized light is:

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

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

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:

An electromagnetic wave is generated by:

A transmitter consists of an LC circuit with an inductance of 15 µH and a capacitance of 23 pF. What is the wavelength of the electromagnetic waves it emits?

Which of the following is NOT true for electromagnetic waves?

Of the following human eyes are most sensitive to:

Measurement

Motion Along a Straight Line

Vector

Motion in Two and Three Dimensions

Force and Motion I

Force and Motion II

Kinetic Energy and Work

Potential Energy and Conservation of Energy

Center of Mass and Linear Momentum

Rotation

Rolling, Torque, and Angular Momentum

Equilibrium and Elasticity

Gravitation

Fluids

Oscillations

Waves I

Waves II

Temperature, Heat, and the First Law of Thermodynamics

The Kinetic Theory of Gases

Entropy and the Second Law of Thermodynamics

Electric Charge

Electric Fields

Gauss Law

Electric Potential

Capacitance

Current and Resistance

Circuits

Magnetic Fields

Magnetic Fields Due to Currents

Induction and Inductance

Electromagnetic Oscillations and Alternating Current

Maxwells Equations; Magnetism of Matter

Images

Interference

Diffraction

Relativity

Photons and Matter Waves

More About Matter Waves

All About Atoms

Conduction of Electricity in Solids

Nuclear Physics

Energy From the Nucleus

Quarks, Leptons, and the Big Bang

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

The magnetic field in a sinusoidal light wave has an amplitude of 3.3 * 10^-7T. The intensity of the wave is:

If the electric field in a plane electromagnetic wave is along the y axis and its magnitude is given by E_msin (kx + $\omega$ t) in SI units, then the magnetic field is along the z axis and its magnitude is given by:

Light with an intensity of 1 kW/m² falls normally on a surface with an area of 1 cm² and is completely absorbed. The force of the radiation on the surface is:

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

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

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 $\degree$ with each other. The ratio of the intensity of emerging light to incident unpolarized light is: