Concepts Of Physics MCQ Edition [Volume 1]PhysicsLight Waves

In air, sodium light has a wavelength of 589 nm . Determine its wavelength in water (refractive index = 1.33 ).

Options

A443 nm
B589 nm
C783 nm
D333 nm

Correct answer

A. 443 nm

Step-by-step solution

The wavelength of light in a medium is given by ' = n where is the wavelength in air and n is the refractive index of the medium. Substituting the given values: ' = 589 1.33 ' 443 nm

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