Question

The frequency range of visible light is from
3.75 X 10^14 Hz to 7.5 x 10^14 Hz. Calculate its
wavelength range. Take speed of light = 3 x 10^8 ms^-1.


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Answer 1

Explanation:

Given, (In air)

Velocity V=340m/s

Frequency f=20,000Hz

Wavelegth λ=?

V=f.λ

λ=FV=20,000340=0.017Hz

Also, Given (in Water)

Velocity, V=1480m/s

Frequencyf=20,000Hz

wavelength, λ=?

V=F.λ

λ=FV=20,0001480=0.074Hz