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The rate of rise and fall of a sine wave is called its _____.


A) amplitude
B) frequency
C) wavelength
D) velocity

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The smallest quantity of any type of electromagnetic radiation is a(n) _____.


A) photon
B) electron
C) neutrino
D) quark

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The energy of a photon is directly proportional to its _____.


A) amplitude
B) frequency
C) velocity
D) wavelength

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B

The intensity of radiation on an object is reduced with distance because the radiation _____.


A) reduces its velocity
B) increases in wavelength
C) loses its energy
D) is spread out over a greater area

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The mass equivalent of a 100 KeV photon of radiation can be calculated using the _____.


A) inverse square formula
B) equivalent Planck equation
C) relativity formula
D) Planck quantum equation

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Photons with the highest frequencies have the _____.


A) highest velocity
B) lowest energy
C) longest wavelengths
D) shortest wavelengths

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A hertz (Hz) is equal to _____ cycle(s) per second.


A) 103
B) 102
C) 10
D) 1

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The lowest energy range of the electromagnetic spectrum is _____.


A) sound waves
B) radio waves
C) gamma rays
D) microwaves

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B

Photons tend to interact with matter _____ their wavelength.


A) equal in size to
B) larger in size than
C) smaller in size than
D) unequal in size to

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X-rays are usually identified by their _____.


A) energy
B) velocity
C) wavelength
D) hertz

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If the wavelength of a beam of electromagnetic radiation increases by a factor of 2,then its frequency must _____.


A) double
B) increase four times
C) decrease by half
D) remain constant

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C

The four properties of photons are _____,_____,_____ and _____.


A) size, shape, spin, mass
B) frequency, mass, amplitude, wavelength
C) frequency, wavelength, velocity, amplitude
D) refraction, velocity, spin, amplitude

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The diagnostic range of x-ray energy is _____.


A) 30 to 150 kVp
B) 200 to 300 kVp
C) 300 to 1000 kVp
D) over 1 MV

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The reduction of radiation intensity due to scattering and absorption is called _____.


A) reflection
B) refraction
C) attenuation
D) dispersion

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The intensity of radiation _____ in _____ proportion to the square of the distance of the object from the source.


A) increases, direct
B) decreases, direct
C) increases, inverse
D) decreases, inverse

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Gamma rays are produced in the _____ of the atom.


A) outer electron shell
B) inner electron shell
C) nucleus
D) K-shell

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If the intensity of light from a flashlight is 4 millilumens (mlm) at a distance of 3 feet,what will the intensity be at 6 feet?


A) 0.4 millilumens
B) 1 millilumen
C) 2 millilumens
D) 16 millilumens

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The _____ of electromagnetic radiation is constant.


A) amplitude
B) velocity
C) frequency
D) wavelength

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What is the electromagnetic wave equation?


A) c=fλ\mathrm { c } = \mathrm { f } \lambda
B) c=f/λc = f / \lambda
C) c = fv
D) c=fλc = f - \lambda

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