A drop of water on glass takes its shape because the surface tension at glass-air interface:

is greater than that at glass-water interface

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is less than that at glass-water interface

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is same as that at glass-water interface

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is equal to zero

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Solution

The correct option is A is greater than that at glass-water interface
Drop of water take its shape on glass due to greater adhesive forces between glass & air than that of glass water interface which result in greater stability.

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