Speed of Light Calculations and Electromagnetic Spectrum

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

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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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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

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EM waves _______ travel the same speed in a vacuum. 

• never

• sometimes

• always

• can

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The speed of light is

• 30,000 km/s

• 300,000 km/s

• 30,000 mi/ s

• 300,000 m/s

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Who performed the most famous experiment measuring the speed of light in 1880?

• Isaac Newton

• Albert Einstein

• Albert Michelson

• Niels Bohr

What was the approximate speed of light found by Michelson in his experiment?

• 299,920 km/s

• 300,000 km/s

• 299,792 km/s

• 186,000 miles/s

How is the speed of light calculated using the travel time and Earth's orbit distance?

• speed of light = distance / time

• speed of light = time / distance

• speed of light = distance x time

• speed of light = time x distance

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In what year did Ole Roemer become the first person to measure the speed of light?

• 1610

• 1644

• 1676

• 1710

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Who was the first person to measure the speed of light?

• Galileo Galilei

• Isaac Newton

• Ole Roemer

• Christiaan Huygens