A ligth of wavelength 6000 `Å` , in air, enters, a medium with refractive index 1.5. Inside the medium, its frequency is `"________________"` Hz and its wavelength is `"________________" Å`

Explanation

To solve the problem, we need to find the frequency and wavelength of light in a medium with a refractive index of 1.5, given that the wavelength in air is 6000 Å (Angstroms).

### Step-by-Step Solution:

**Step 1: Understand the relationship between wavelength and refractive index.**

The refractive index (n) of a medium is related to the speed of light in that medium and the speed of light in a vacuum (or air). The relationship can be expressed as:
\[ n = \frac{c}{v} \]
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