calculate the frequency wave length 480 pm
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frequency= speed of light/wavelength
= 3×10^8m/s/480m
= 10^8m/s/160
=10^7m/s/16
=625000s
= 3×10^8m/s/480m
= 10^8m/s/160
=10^7m/s/16
=625000s
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