Question

Explain the reflection of transverse and longitudinal waves from a denser medium and a rarer medium.

Answer 1

When a wave undergoes a reflection at a denser medium then it’s crest reflected as trough and vice versa. So, it’s phase changes at 180(degree).

Answer 2

Welcome dear,

● Transverse waves -
- Transverse waves consists of crests and troughs.
- In denser medium after reflection, phase difference is π. Therefore, crest travels as trough and trough travels as crest.
- In rarer medium after refection, phase difference is 0. Therefore, crest travels as crest and trough travels as trough.

● Longitudinal waves -
- Longitudinal waves consist of compression and rarefaction.
- In denser medium after reflection, phase difference is π. Therefore, compression becomes compression and rarefaction as rarefaction.
- In rarer medium after reflection, phase difference is 0. Therefore, compression becomes rarefaction and rarefaction as compression.


Hope this helps you...