Question

is
then
A beam of unpolarised light of
intensity Io passed through
another poleriods which is
oriented so that its principle plane makes an angle
of 45° relative to
that of A. The intensity of emergent
makes
light is?​

Answer 1

Explanation:

After passing through first polarizer I=

2

I

0

After second polarizer I=

2

I

0

cos

2

(30

o

)=

8

3

I

0

After third polarizer I=

8

3I

0

cos

2

(60

o

)=

32

3I

0

So final intensity =

32

3I

0

.