Wave Optics-Polarization (NEET Physics): Questions 5 - 7 of 9

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Question number: 5

» Wave Optics » Polarization

MCQ▾

Question

Out of the following statements which are correct?

(1) Nicol prism works on the principle of double refraction and total internal reflection

(2) Nicol prism can be used to produce and analyses polarised light

(3) Calcite and Quartz are both doubly refracting crystals

(4) When unpolarised light passes through a Nicol prism, the emergent light is elliptically polarized

Select the correct answers and mark it according to the following codes:

Codes:

Choices

Choice (4) Response

a.

1 and 3 are correct

b.

1, 2 and 3 are correct

c.

2 and 4 are correct

d.

1 and 2 are correct

Question number: 6

» Wave Optics » Polarization

MCQ▾

Question

V 0 and V E represent the velocities, µ 0 and μ E the refractive indices of ordinary and extraordinary rays for a doubly refracting crystal. Then

Choices

Choice (4) Response

a.

V0VE,μ0μE if the crystal is calcite

b.

V0VE,μ0μE if the crystal is quartz

c.

V0VE,μ0μE if the crystal is quartz

d.

V0VE,μ0μE if the crystal is calcite

Question number: 7

» Wave Optics » Polarization

MCQ▾

Question

Plane polarised light is passed through a polaroid. On viewing through the polaroid we find that when the polaroid is given one complete rotation about the direction of the light, which of the following is not observed?

(1) The intensity of light gradually decreases to zero and remains at zero

(2) The intensity of light gradually increases to a maximum and remains at maximum

(3) There is no change in intensity

(4) The intensity of light is twice maximum and twice zero

Select the correct answers and mark it according to the following codes:

Codes:

Choices

Choice (4) Response

a.

2 and 4 are correct

b.

1, 2 and 3 are correct

c.

1 and 3 are correct

d.

1 and 2 are correct

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