Intensity of unpolarised light incident on a polarizer is $2 a^{2}$ then amplitude of emergent ray (Assuming zero absorption in the Polaroid)

\frac{a}{2}

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\frac{\sqrt{3} a}{2}

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\frac{3 a}{4}

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Solution

The correct option is B a
$I_{p} = \frac{I}{2}$
$A^{2} = \frac{2 a^{2}}{2}$
Amplitude $A = \sqrt{a^{2}}$ ; A = a

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Intensity of unpolarised light incident on a polarizer is 2a2 then amplitude of emergent ray (Assuming zero absorption in the Polaroid)

The correct option is B aIp=I2 A2=2a22 Amplitude A=√a2 ; A = a

Intensity of unpolarised light incident on a polarizer is $2 a^{2}$ then amplitude of emergent ray (Assuming zero absorption in the Polaroid)

The correct option is B a
$I_{p} = \frac{I}{2}$
$A^{2} = \frac{2 a^{2}}{2}$
Amplitude $A = \sqrt{a^{2}}$ ; A = a