I just need answers for the Q1 - Q6 any other information will be helpful Optica

Question

I just need answers for the Q1 - Q6 any other information will be helpful
Optical Activity Introduction The electric (E) and magnetic (B) vectors in a traveling electromagnetic wave (such as light for example) oscillate in directions perpendicular to each other and to the direction of travel of the beam. In general, if the light is traveling in the positive z-direction, the E and B vectors oscillate in random directions in the x-y plane, but are perpendicular to each other at any point in space and time. Fig. 1: The electric field vector E in a plane-polarized light beam. Fig. 2c Fig. 2d Coordinate System Fig. 2a: Unpolarized EVector Fig. 2b Fig. 2: Different cases of polarization of a light beam. Figure 2a shows the unpolarized case. The axis of oscillation of the E vector is in the x-y plane but, at random direction with respect to any of the two axes. Figure 2b shows polarization along the x direction. The E vector oscillates only in the x-direction. Figure 2c

Explanation / Answer

Ans (1.) Not necessary to be polarised.

Ans(2.) Two points of minimum intensity.

Ans(3.) Minimum intensity will be at 90 degree or 270 degree.

Ans (4.) Passing through bubble may introduce some path defference.

Ans(5.) Origin may used as an additional constraint but it's not always true.

Ans (6.) Yes, it may. (depends on curve you got finally)

Thankyou.

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