A light wave travels from air into a medium of refractive index 1.54. If the wavelength of the light in air is \(5.9\times10^{-7}\)m, calculate its wavelength in the medium
A.
\(2.5\times10^{-7}\)m
B.
\(3.8\times10^{-7}\)m
C.
\(4.6\times10^{-7}\)m
D.
\(5.2\times10^{-7}\)m
E.
\(6.1\times10^{-7}\)m
Correct Answer: Option B
Explanation
n =\(\frac{wavelength\, in\, air}{wavelength\, in \,medium}= \frac{5.9\times10^{-7}}{1.54}= 3.8\times10^{-7}\)m
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