Question 1

Which region of the electromagnetic spectrum contains the greatest amount of energy per photon?

Accepted Answer

X-Rays

Question 2

A carbon–oxygen double bond within a sugar molecule absorbs electromagnetic radiation at a frequency of $$6.0 	imes 10$$^{13}$$ Hz. Which portion of the electromagnetic spectrum does this represent?

Accepted Answer

Infrared

Question 3

Which of the following sources of electromagnetic radiation will have the highest energy?

Accepted Answer

UV (B) $$310 nm$$

Question 4

What is the relationship between wavelength ($$\lambda) $$and frequency ($$f) in $$the electromagnetic spectrum?

Accepted Answer

$$\lambda = \dfrac{c}{f}$$

Question 5

Which color of visible light has the shortest wavelength?

Accepted Answer

Violet

Question 6

If the frequency of electromagnetic radiation increases, what happens to its wavelength?

Accepted Answer

It decreases

Question 7

Which of the following electromagnetic waves has the lowest frequency?

Accepted Answer

Radio Waves

Question 8

A hospital uses X-ray detectors that convert X-rays into light to detect X-rays indirectly. Which of the following would be picked up by an X-ray detector: radiation with a wavelength of $$0.18 nm or a $$frequency of $$6.25 	imes 10$$^{18}$$ Hz?

Accepted Answer

Radiation with a wavelength of $$0.18 nm$$

Question 9

Which equation correctly expresses the energy ($$E) of a $$photon in terms of its frequency ($$f$$)?

Accepted Answer

$$E = h \cdot f$$

Question 10

Which of the following statements about electromagnetic radiation is TRUE?

Accepted Answer

Visible light is only a small portion of the electromagnetic spectrum.

Question 11

A scientist is studying a molecule that absorbs light at $$450 nm. $$Which color of visible light is most likely being absorbed?

Accepted Answer

Blue

Question 12

Which of the following electromagnetic waves is most likely to cause ionization in biological tissues?

Accepted Answer

X-Rays

Question 13

If the speed of light ($$c) is$$ $$3.0 	imes 10^8$ m/s, what is the frequency (f$) of light with a wavelength ($$\lambda$$) of 600$ nm?

Accepted Answer

$$5.0 	imes 10$$^{14}$$ Hz

Question 14

Which of the following is the correct order of electromagnetic waves from lowest to highest frequency?

Accepted Answer

Radio Waves, Infrared, Visible Light, Ultraviolet, X-Rays, Gamma Rays

Question 15

Which property of electromagnetic waves determines their ability to penetrate materials?

Accepted Answer

Wavelength

Question 16

A student observes that ultraviolet light can cause sunburn, but visible light cannot. What is the best explanation for this observation?

Accepted Answer

Ultraviolet light has higher energy per photon than visible light.

Question 17

Which of the following is NOT a correct statement about the electromagnetic spectrum?

Accepted Answer

Microwaves have higher frequency than ultraviolet radiation.

Question 18

A molecule absorbs electromagnetic radiation with a frequency of $$1.0 	imes 10$$^{15}$$ Hz. Which type of electromagnetic radiation is this?

Accepted Answer

Ultraviolet

Question 19

Which of the following best describes the relationship between energy ($$E) $$and wavelength ($$\lambda) $$for electromagnetic radiation?

Accepted Answer

Energy decreases as wavelength increases.

Question 20

Which electromagnetic wave is most commonly used in medical imaging to view bones?

Accepted Answer

X-Rays

The Electromagnetic Spectrum: Fundamentals and Applications

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