15.5 Polarisation

Question 1

Which type of waves can be polarised?

Answer 1

transverse only

Question 2

Why cannot longitudinal waves be polarised?

Answer 2

They only travel in one plane already, so will just pass straight through or be blocked

Question 3

What is a plane polarised wave(just a polarised wave)

Answer 3

A wave in which medium (particles) are oscillating in one plane

Question 4

What can we use to create a plane polarised wave ? for light

Answer 4

polarising filters

Question 5

What is a perfect example which shows a longitudinal wave cannot be polarised?

Answer 5

sound will pass through any slit

Question 6

What is the name of the plane that lets the wave through?

Answer 6

plane of polarisation

Question 7

What would happen if two filters are held together in front of a transverse wave source and originally the wave passes through both in one plane, but the second plane is now rotated.

Answer 7

we will see a reduction in intenisty until it reaches zero where the planes of polarisation are perpendicular to each other from the two filters.