Question

A third polaroid is placed between p1 and p2 with its pass axis making an angle beta

Answer 1

Answer:

Hence, our angle beta is equal to 0 degrees.

Step-by-step explanation:

Our question is: A third polaroid is placed between p1 and p2 with its pass axis making an angle beta..

We know that, intensity of light is equal to:

• I1 = I0 / 2 ... (1)

• I2 = I0/2$cos^{2} \alpha$  ... (2)

• I3 = I2$cos^{2} \beta$  ... (3)

We can say that I1 is equal to I2, thus:

• I0 / 2 = I0/2 $cos^{2} \alpha$
• $cos^{2} \alpha = 1$
• $\alpha = 0 degrees$

In order to find the value of beta, we need to compare and to the same for each angle, and then we can take some conclusions.

We can also assure that I2 = I3, then, as we have seen in cases above:

• $\beta = 0 degrees$

Hence, our angle beta is equal to 0 degrees.