Question

Distinguish Gravity waves and ripplest
How Surface tension of water us
determined experimentally by Ripple method​

Answer 1

Explanation:

distinguish gravity waves and ripplest

For waves on the surface of water there are actually restoring forces, gravity and surface tension. On long length scale like a boat wake, the surface tension plays an insignificant role. ... So ripples on water could have combination from both gravity and surface tension depending on how small they are.

how surface tension of water is determined experimentally by ripple method

By setting up ripples on the surface of water, the surface tension can be measured. A small wire connected to a speaker cone driven by a function generator sets up the surface ripples, and a HeNe laser is angled at the water surface. The ripples act as a diffraction grating, yielding interference spots on a screen.