Mechanical waves in the surface of a liquid are
Transverse
Longitudinal
Torsional
Both transverse and longitudinal
Mechanical Wave -
It can be produced and propagated only in those material media which possess elasticity and inertia.
- wherein
e.g. disturbance in water on dropping a pebble in it.
Option 1)
Transverse
This is incorrect.
Option 2)
Longitudinal
This is incorrect.
Option 3)
Torsional
This is incorrect.
Option 4)
Both transverse and longitudinal
This is correct.
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