Calculations Electromagnetic Spectrum

A certain photon of light has a wavelength of 4.22x10^-7nm. What is the frequency? (v=c/λ)

• 7.11x10¹⁴ Hz
• 7.11Hz
• 1.41x10^-15
• -1.41x10¹⁵

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Certain blue lights have a frequencey of 6.91x10¹⁴Hz. What is the wavelength? (λ=c/v)

• 4.34x10²¹
• 4.34x10^-21
• 4.34x10^-7
• 2.07x10²³

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What is the wavelength for a quantum of light with energy of 7.56x10^-19J? (λ=hc/E) 

• 2.62x10^-7m
• 2.62x10⁷m
• 2.64x10^-45m
• 2.64x10⁴⁵m

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The energy for a quantum of light is 2.84x10^-19J. What is the wavelength. (λ=hc/E)

• 6.97x10^-45m
• 6.97x10⁴⁵m
• 6.97x10^-7m
• 6.97x10⁷m

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A communications satellite transmits a radio wave at a frequency of 5.0 x 10⁹ Hz. What is the signal’s wavelength? Assume the wave travels in a vacuum.

• (5.0 x 10^9 Hz) x (3.0 x 10^8 m/s)

• (5.0 x 10^9 Hz) / (3.0 x 10^8 m/s)

• (3.0 x 10^8 m/s) / (5.0 x 10^9 Hz)

• (5.0 x 10^9 Hz) + (3.0 x 10^8 m/s)

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Infrared rays have a shorter wavelength than

• Ultraviolet ray.

• X-rays.

• radar waves.

• gamma rays

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The blue section of the wave is measuring _________________.

• wavelength
• crest
• trough
• amplitude 

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