Define polarising angle for polarisation by reflection .

lamda_a and lamda_m are the wavelengths of light in air and medium respectively. If i_p is the polarising angle, the correct relation between lamda_(a), lamda_m and i_p is

What is polarisation of light?

Explain the terms plane of polarisation and plane of vibration .

The relation between the polarising angle (i_(p)) and the refractive index (n) of the medium is given by

Define Total internal reflection

Angle of incidence is less than critical angle : Partial reflection :: Angle of incidence is greater than critical angle : ____

With the help of a neat labelled diagram, explain partial reflection, critical angle and total internal reflection.

The ralation between the polarising angle and the critical angle is

The relation between refractive index of the medium and angle of polarisation is called

Assertion: The electromagnetic waves of all wavelengths can be polarised. Reaseon : Polarisationo is independent of the wavelegths of electromagnetic waves.