Question

What happens when a wave of compression is reflected from (i) a rarer
medium (ii) a denser medium?

Answer 1

Answer:

froma denser medium is reflected

Answer 2

Dear Student,

◆ Answer -

(i) Compression wave reflects back as rarefaction from rarer medium.

(ii) Compression wave reflects back as compression from denser medium.

◆ Reflection of longitudinal waves -

Longitudinal waves consist of compression and rarefaction.

1. In rarer medium after reflection, phase difference is 0. Therefore, compression becomes rarefaction and rarefaction as compression.
2. In denser medium after reflection, phase difference is π. Therefore, compression becomes compression and rarefaction as rarefaction.

Thanks dear. Hope this helps you...