Electromagnetic Spectrum Calculations

Calculate the wavelength of light that has a frequency of 5.2 x 10^{12 1}/s.

• 5.8 x 10 ^-5 m

• 5.8 x 10 ^-7 m

• 5.19 x 10 ¹⁴ m

• 1.56 x 10 ²³ m

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NGSS.HS-PS4-1

IRAS, the Infrared Astronomy Satellite launched by NASA in 1983, had a detector that measured infrared or heat radiation from different regions of space. What is the frequency of infrared light that has a wavelength of 1.10 X 10^-6 m?

• 3.67 x 10^-15 Hz

• 3.67 x 10^-3 Hz

• 2.73 x 10² Hz

• 2.73 x 10¹⁴ Hz

Tags

NGSS.HS-PS4-1

A common infrared laser operates at 1.06 x 10³ nm. What is the energy of a photon with this wavelength? (1 x 10⁹ nm = 1m)

• 7.02 x 10^-40 J

• 6.25 x 10^-28 J

• 3.54 x 10^-15 J

• 1.87 x 10^-19 J

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NGSS.HS-PS4-1

The relationship between wavelength and frequency is λ=c/f.  Calculate the wavelength of light that has a frequency of 5.2 x 10¹² 1/s. The speed of of light is 3.0x 10⁸ m/s.

• 5.8 x 10 ^-5 m

• 5.8 x 10 ^-7 m

• 5.19 x 10 ¹⁴ m

• 1.56 x 10 ²³ m

Tags

NGSS.HS-PS4-1

A student drew a diagram shown to model an electromagnetic wave from the sun. Scientists have shown that ultraviolet light from the sun that has a wavelength of 315 to 400 nanometers can damage the retina. Use the drop-down menus to create the BEST question for the student to ask to determine whether the electromagnetic wave modeled will cause damage to the retina. What is the ​ (a)   distance between point ​ (b)   on the model?

• horizontal

• W and point Z

• vertical

• Y and point Z

• X and point Y

• W and point Y

Answer explanation

“Horizontal” is the correct response for the first drop-down menu because the wavelength is the horizontal

distance between the same relative locations on two successive wave oscillations. “W and point Z” is the

correct response for the second drop-down menu because these are the same relative locations, the peaks

on two successive wave oscillations.

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NGSS.HS-PS4-3

Solve this problems using the equation: 
C = λν
If an AM radio station broadcasts at
9.95 x 10⁵ Hz, what is the wavelength of this radiation?

• 6.59 x 10^-28 m

• 1.01 x 10^-6 m

• 3.32 x 10^-3 m

• 302 m

Tags

NGSS.HS-PS4-1

What is the frequency of a photon whose energy is 3.4x10^-19J?

• 8.8x10²⁶ Hz

• 5.1x10¹⁴ Hz

• 1.9x10^-15 Hz

• 2.3x10^-52 Hz

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

The EM spectrum increases from left to right in________________.

• Wavelength

• Frequency

• Amplitude

• Height

Tags

NGSS.HS-PS4-1

Which EM waves are have a SHORTER wavelength than visible?

• radio

• none

• infrared

• x-rays

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NGSS.HS-PS4-1

What happens to frequency when wavelength decreases?

• stays the same

• decreases

• increases

• There is no relationship between wavelength & frequency.

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NGSS.HS-PS4-1