Question

how will you examine the plane polarised light with help of polaroids​

Answer 1

Answer:

1. by changing angle of polarised
2. ${ { \frac{ee \binom{}{?} }{?} }^{2} }^{?}$

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Answer 2

In a light, oscillations occur randomly perpendicular to the motion of wave.  A polarized light has oscillations in only direction. A Polaroid polarizes the light. A Polaroid absorbs vibrations in all directions except for one single plane. A Polaroid when used to analyze a polarized light is known as an Analyzer. The analyzer is moved, the intensity of the polarized light varies as per law of Malus.

$I=I_ocos^2\phi$

Where, $\phi$ is the angle between the Polaroid and analyzer. Maximum intensity is when $\phi$ =0, and minimum intensity is when $\phi$ =90°.

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