What should be the thickness of quarter wave plate for a light of wavelength 5000 Å if µ_e=1.553 and µ_o=1.544

• 1.38x10^-3 cm

• 1.43x10^-3 cm

• 1.53x10^-3 cm

• 1.63x10^-3 cm

The velocity of light in water is 1.5x10⁸ m/s. What is the polarizing angle of incidence.

• 47.23⁰

• 51.03⁰

• 53.74⁰

• 63.43⁰

A tube of length 20 cm containing 10 % sugar solution rotates the plane of polarization by 13.2⁰ . What is the specific rotation of sugar solution.

• 66⁰

• 55⁰

• 44⁰

• 33⁰

Which of the phenomena suggests that light may be a transverse wave?

• Interference

• Diffraction

• Reflection

• Polarization

What happen if ordinary unpolarized light passed through a uniaxial crystal?

• Light remains unaffected.

• The light is split into two rays.

• The light is split into more than two rays.

• None of these

What happen if o-ray and e-ray travel along the optic axis?

• Both rays travel with the same speed.

• o-ray travel faster than e-ray.

• e-ray travel faster than o-ray.

• none of these

How much phase change is introduced by a quarter wave plate between ordinary and extraordinary rays ?

• $\frac{\pi}{2}$

• $\pi$
  

• $\frac{\pi}{4}$

• $0$

The plane in which electric field vector of plane polarised light vibrates is known as

• Plane of vibration

• Plane of polarisation

• Principle plane

• none of these

The acute angle of principle section of calcite crystal is

• 71⁰

• 68⁰

• 109⁰

• 102⁰

Canada Balsam acts as ...... medium for o-ray

• Rarer

• Denser