Physics
Grade-8
Easy
Question
One end of a slinky lying on a table is fixed to a rigid support. The free end of the slinky is pushed back and forth. As a result, it was observed that some loops of the slinky come closer together and others spread apart. The former and the latter types of regions are called ____ and _____ respectively.
- Rarefaction and compression
- Compression and rarefaction
- Compression and compression
- Rarefaction and rarefaction
Hint:
Compression and rarefaction are created from the sound waves
The correct answer is: Compression and rarefaction
- By fixing one end on a rigid support and holding the other end waves can be generated.
- By moving it back and forth, longitudinal waves can be generated.
- Some loops which are closer make the region of compression.
- And the loops which spread apart are the region of rarefaction.
- So, the correct option is b.
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