Polarisation (HSC SSCE Physics): Quizzes

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Polarisation
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What does polarisation of electromagnetic radiation specifically relate to?

Direction of electric field oscillation

How is light from incandescent sources like the Sun described?

Unpolarised

What does plane polarisation mean?

All fields oscillate in same 2D plane

Which method does NOT convert unpolarised light into plane-polarised light?

Increasing light intensity

Why is reflected sunlight from a lake plane-polarised?

Ions oscillate parallel, not perpendicular

How is intensity II related to amplitude AA in electromagnetic radiation?

I∝A2I \propto A^2

What is Malus' Law?

I=Imaxcos⁡2θI = I_{\text{max}}\cos^2\theta

When does an analyser transmit zero intensity of polarised light?

When perpendicular to polarisation

Which physicist pioneered the study of polarisation?

Etienne Louis Malus

What is the SI unit for light intensity?

Lux

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