A beam of unpolarised light of intensity I_0 | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) When unpolarised light of intensity $I_0$ passes through the first polaroid $A$,the intensity of the transmitted light becomes $I_1 = \frac{I_0}{2

Vedclass · Accepted Answer

$\frac{I_0}{4}$

Vedclass · Answer

(D) When unpolarised light of intensity $I_0$ passes through the first polaroid $A$,the intensity of the transmitted light becomes $I_1 = \frac{I_0}{2}$.According to Malus' Law,when this polarised light passes through the second polaroid $B$ whose transmission axis makes an angle $	heta = 45^{\circ}$ with the axis of $A$,the intensity of the emergent light $I_R$ is given by:$I_R = I_1 \cos^2(	heta)$Substituting the values:$I_R = \left(\frac{I_0}{2}ight) \cos^2(45^{\circ})$Since $\cos(45^{\circ}) = \frac{1}{\sqrt{2}}$,we have $\cos^2(45^{\circ}) = \frac{1}{2}$.Therefore,$I_R = \frac{I_0}{2} 	imes \frac{1}{2} = \frac{I_0}{4}$.

$A$ beam of unpolarised light of intensity $I_0$ is passed through a polaroid $A$ and then through another polaroid $B$ which is oriented so that its principal plane makes an angle of $45^{\circ}$ relative to that of $A$. The intensity of the emergent light is

Similar Questions

It is possible to distinguish between the transverse and longitudinal waves by studying the property of

Unpolarized light falls on two polarizing sheets placed one after another. What should be the angle between the pass axes of the sheets so that the final transmitted light has one-fourth the intensity of the incident light?

The angle between a polarizer and an analyzer is $60^o$. If light with an amplitude $A$ is incident on the polarizer,what is the amplitude of the light emerging from the analyzer?

The intensity of incident unpolarized light on a polaroid is $I_1$ and the intensity of emergent polarized light from this polaroid is $I_2$. The relation between $I_1$ and $I_2$ is $.......$

The transverse nature of light was confirmed by the phenomenon of

Vedclass Test Series

Exam Paper Generator

Online Exam Module