Answer:
Option D.) 0.09 I₀
Explanation:
The intensity, I, of a polarized light after passing through a polarizing filter is given by
Original Intensity
Angle between the direction of polarization and the axis of filter
After passing through the first polarizer, the initial intensity,
is halved, i.e 
After passing through the second polarizer, the angle of polarization, θ = 30⁰


After passing through the third polarizer, the angle of polarization, θ = 90⁰-30⁰ = 60⁰



at any angle between -90 and 90 degrees. In the diffused reflection ,the surface is rough and the direction of light in not the same as the incident light. It can be reflected at any angle
Answer:
The net charge on the shell is 30x10^-9C
Explanation:
Pls see attached file
Answer:
and 
, second order does not exist
Explanation:
n = Number of lines grating = 
= Wavelength
m = Order
Distance between slits is given by


m = 1
We have the relation

m = 2

The first and second order angles for light of wavelength 400 nm are
and
.

m = 1

m = 2

Here
so there is no second order angle for this case.
The first order angle for light of wavelength 700 nm are
.
Second order angle does not exist.