Monochromatic light of wavelength 590 nm is incident from air on water.
If the refractive index of water is 3/2 then its wavelength is?
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Monochromatic light of wavelength 590 nm is incident from air on water.
If the refractive index of water is 3/2 then its wavelength is?
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Explanation:
Wavelength of incident light λ=589nm=589×10
−9
m
Speed of light in air c=3×10
8
m/s
μ=1.33
Frequency
ν=
λ
c
=
589×10
−9
3×10
8
=5.09×10
14
Hz
Velocity
v=
μ
c
v=
1.33
3×10
8
v=2.25×10
8
m/s
Wavelength
λ=
ν
v
=
5.09×10
14
2.25×10
8
=444nm
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