When a drop of water is dropped on oil surface, then

When a drop of oil is spread on a water surface, it displays beautiful colours in daylight because of

When a drop of oil is spread on a water surface, it displays beautiful colours in daylight because of

When a drop of oil is spread on a water surface, it displays beautiful colours in daylight because of

When a stone is dropped on the surface of the still water, the waves produced are ________

A steel ball is dropped in oil, then

"A drop of oil placed on the surface of water spreads out. But a drop of water placed on oil contracts to a spherical shape". Why?

When a stone is dropped on the surface of still water, the waves produced are ………….