What is a plane polarised e.m. wave?

What is meant by plane polarised ligth ?Which type f waves show the property of polarisation ?Briefly discuss: polarisation by scattering and

What is linearly polarised light?

Defien a linearly polarised or plane polarised light.Why is the phenomenon of polarisation not observed by sound waves?

Which of the following waves can be polarised heat waves sound waves? Give reason to support your answer.

What are plane of polarisation and plane of vibration?