Miscellaneous: Practice Problem & Solution
An electromagnetic radiation of frequency $n$, wavelength $\lambda$, travelling with velocity $v$ in air, enters a glass slab of refractive index $\mu$. The frequency, wavelength and velocity of light in the glass slab will be respectively (1997)
Solution Explained:
To solve this problem, we apply the core principles of Miscellaneous. Understanding the underlying formula is key to arriving at the correct answer below:
When light passes from one medium to another, its frequency $n$ remains constant as it depends on the source. The velocity of light decreases to $v' = \frac{v}{\mu}$, and correspondingly, the wavelength decreases to $\lambda' = \frac{\lambda}{\mu}$.
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