Polarising angle of a transparent medium is `60^(@)`, angle of refraction will be

Options

A. `120^(@)`
B. `45^(@)`
C. `30^(@)`
D. `60^(@)`

Explanation

To find the angle of refraction when the polarizing angle of a transparent medium is given as \(60^\circ\), we can use Brewster's Law. According to this law, the angle of polarization (\(i_p\)) and the angle of refraction (\(r\)) are related as follows:

1. **Identify the given values**:
- Polarizing angle (\(i_p\)) = \(60^\circ\)

2. **Use Brewster's Law**:
- Brewster's Law states that the angle of polarization and the angle of refraction are related by the equation:
\[ i_p + r = 90^\circ \]
- This means that the angle of refraction can be calculated as:
\[ r = 90^\circ - i_p \]

3. **Substitute the known value**:
- Substitute \(i_p = 60^\circ\) into the equation:
\[ r = 90^\circ - 60^\circ \]

4. **Calculate the angle of refraction**:
- Perform the subtraction:
\[ r = 30^\circ \]

Thus, the angle of refraction is \(30^\circ\).