Question

According to Brewster's law, except for polished metallic surfaces, the polarizing angle,

• A. depends on wavelength and is different for different colours.
• B. independent of wavelength and is different for different colours.
• C. independent of wavelength and is same for different colours.
• D. depends on wavelength and is same for differents colours.

Answer 1

The correct option is A depends on wavelength and is different for different colours.

According to Brewster's laws $i_p={\tan }^{-1}\left(\mu \right)$
i. e. the polarizing angle depends on refractive index.

Now, the refractive index is different for different wavelengths and therefore, is different for different colors.

Hence, $\left(A\right)$ is the correct answer.