Two polaroids are oriented with their transmision axes making angle of 30° with each other. The fraction of incident un polarised light is transmitted.

Question

Two polaroids are oriented with their transmision axes making angle of 30° with each other. The fraction of incident un polarised light is transmitted. (A) 37% (B) 37.5% (C) 3.36% (D) 36.5%

Tardigrade Admin · Accepted Answer

I1 = (I0/2) ; I2 = I1 cos2 θ Fraction (I2/I0) = (3/8)

Q. Two polaroids are oriented with their transmision axes making angle of 30 $^{\circ}$ with each other. The fraction of incident un polarised light is transmitted.

37%

37.5%

3.36%

36.5%

$I_{1} = \frac{I _{0}}{2}; I_{2} = I_{1} cos^{2} θ$
Fraction $\frac{I _{2}}{I _{0}} = \frac{3}{8}$

Q. Two polaroids are oriented with their transmision axes making angle of 30∘ with each other. The fraction of incident un polarised light is transmitted.

37%

37.5%

3.36%

36.5%

I1​=2I0​​;I2​=I1​cos2θ Fraction I0​I2​​=83​

Q. Two polaroids are oriented with their transmision axes making angle of 30 $^{\circ}$ with each other. The fraction of incident un polarised light is transmitted.

$I_{1} = \frac{I _{0}}{2}; I_{2} = I_{1} cos^{2} θ$
Fraction $\frac{I _{2}}{I _{0}} = \frac{3}{8}$