The wavelength range of the visible spectrum extends from violet (400 nm) to red (750 nm). Express these wavelengths in frequencies(Hz), (1nm=10^(-9)m).

The wavelength range of the visible spectrum extends from violet (400

1.	The wavelength range of the visible spectrum extends from violet (400 nm) to red (750 nm). Express these wavelengths in frequencies(Hz), (1nm=10^(-9)m).
Answer» Solution :Frequency of violet light `V=c/lambda=(3.00xx10^8ms^(-1))/(400xx10^(-9))=7.50xx10^14Hz` Frequency of RED light `lambda=c/lambda=(3.00xx10^8ms^(-1))/(750xx10^(-9))=4.0xx10^14Hz` The range of VISIBLE SPECTRUM is from `4.0xx10^14` to `7.5xx10^14` Hz.in terms of frequency UNITS.