Wavelengths refresh

The frequency of violet light is 7.5x10¹⁴ Hz. What is its wavelength?

• 4.0x10^-7 m

• 4.0x10⁷ m

• 2.25x10²³m

• 2.25x10²³ Hz

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Red light has a wavelength of 675 x 10^-9 m. What is its frequency?

• 2.03x10¹¹ m

• 4.44x10¹⁴ Hz

• 4.44x10¹⁴ nm

• 2.03x10¹¹ Hz

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What is Planck's Constant?

• 6.63x10^-34 Js

• 6.63x10^-34 J/s

• 3.0x10⁸ ms

• 3.0x10⁸ m/s

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Which kind of wave has the greatest frequency?

• gamma rays

• infrared

• ultraviolet

• microwaves

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Which wave in the diagram has the greatest wavelength?

• 1

• 2

• 3

• 4

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Violet light has a wavelength of
4.10 x 10^-12  m. What is the frequency?

• 1.23 x 10^ -3 Hz

• 7.31 x 10^ 19 Hz

• 1.37 x 10^12 Hz

• 3.0 x 10^ 8 Hz

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High frequency waves have _________ wavelengths.

• varying

• long

• the same

• short

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The unit of frequency is ___.

• meters

• nanometers (nm)

• m/s

• Hertz

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