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Polarization

Total questions: 13

Worksheet time: 8mins

Name
Class
Date
1.

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

a)

1.38x10-3 cm

b)

1.43x10-3 cm

c)

1.53x10-3 cm

d)

1.63x10-3 cm

2.

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

a)

47.230

b)

51.030

c)

53.740

d)

63.430

3.

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.

a)

660

b)

550

c)

440

d)

330

4.

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

a)

Interference

b)

Diffraction

c)

Reflection

d)

Polarization

5.

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

a)

Light remains unaffected.

b)

The light is split into two rays.

c)

The light is split into more than two rays.

d)

None of these

6.

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

a)

Both rays travel with the same speed.

b)

o-ray travel faster than e-ray.

c)

e-ray travel faster than o-ray.

d)

none of these

7.

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

a)

π2\frac{\pi}{2}

b)

π\pi

c)

π4\frac{\pi}{4}

d)

00

8.

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

a)

Plane of vibration

b)

Plane of polarisation

c)

Principle plane

d)

none of these

9.

The acute angle of principle section of calcite crystal is

a)

710

b)

680

c)

1090

d)

1020

10.

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

a)

Rarer

b)

Denser

11.

Which phenomenon is used in Nicol prism to eliminate o-ray.

a)

Total internal reflection

b)

Double Refraction

c)

Refraction

d)

Polarisation

12.

In negative uniaxial crystal the sphere lies inside the ellipsoid.

a)

True

b)

False

13.

In positive uniaxial crystal o-ray travels faster than e-ray.

a)

True

b)

False