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Please help me guys please help please
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14 votes
14 votes
Please help me guys please help please

Please help me guys please help please-example-1
User JaimeJorge
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1 Answer

13 votes
13 votes

Answer:

C = frequency × wavelength, where C is the speed of the photons which is the speed of light ~3×10^8

frequency = C/wavelength

f = 3×10^8/400×10^-9m

f = 3/4 × 10^15Hz

f = 0.75×10^15Hz

f = 7.5×10^14Hz

User Sergei G
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