Worksheet 1 Key

# Worksheet 1 Key - Fall 2010 CH301 Worksheet 1 Answer Key 1 Calculate the frequency of light that corresponds to the following wavelengths in a

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Fall 2010 CH301 Worksheet 1 Answer Key 1. Calculate the frequency of light that corresponds to the following wavelengths in a vacuum. a) 120 nm c = λ·ν 3.00 x 10 8 m/s = (120 x 10 -9 m) ·ν ν = (3.00 x 10 8 ms -1 )/(12 x 10 -8 m) NOTE: You could have rewritten the 120 E-9 term as 1.2 E-7, but 3/12 makes it an easy calculation. ν = 0.25 x 10 16 s -1 = 2.5 x 10 15 hz b) 6 km c = λ·ν 3.00 x 10 8 m/s = (6 x 10 3 m) ·ν ν = (3.00 x 10 8 ms -1 )/(6 x 10 3 m) ν = 0.5 x 10 5 s -1 = 5 x 10 4 hz c) 100 Å (1 Å = 10 -10 m, a conversion factor you should know.) ν = (3.00 x 10 8 ms -1 )/(1 x 10 -8 m) ν = 3 x 10 16 s -1 2. How would doubling the frequency of a given wave affect the following values? a) λ it would be halved b) c no change 3. Calculate wavelength from the following frequencies. a) 900. kHz λ = c/ν λ = (3.00 E8 m/s)/(900 E3 Hz) = (3.00 x 10 8 m/s)/(9.00 x 10 5 s -1 ) = 0.333 x 10 3 m b) 300 MHz λ = (3.00 E8 m/s)/(3.00 E5 Hz) = 1 x 10 3 m 4. Estimate the wavelength of light with a frequency of 92 GHz.

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## This note was uploaded on 09/19/2011 for the course CH 301 taught by Professor Fakhreddine/lyon during the Fall '07 term at University of Texas at Austin.

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Worksheet 1 Key - Fall 2010 CH301 Worksheet 1 Answer Key 1 Calculate the frequency of light that corresponds to the following wavelengths in a

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