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The alignment of the molecules in a polaroid gives the ____________

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The alignment of the molecules in a polaroid gives the ____________

(a) Propagation axis

(b) Polarization axis

(c) Unpolarized axis

(d) Pass-axis

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This interesting question is from Polaroids topic in portion Polarisation of Engineering Physics II

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Correct choice is (b) Polarization axis

For explanation: When a light wave is polarized, the electric vectors along the direction of propagation are absorbed by the polaroid. The alignment of the molecules in the polaroid gives us the polarization axis.

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