Red light has wavelength `750 n m`, whereas violet light has wavelength `400 n m`. Calculate their frequency and energ

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Q 3122280131.     Red light has wavelength `750 n m`, whereas violet
light has wavelength `400 n m`. Calculate their
frequency and energy (`c = 3 xx 10^8 m s^(-1)` ,
`h = 6.63 xx 10^( -34) J s)`.

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(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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