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प्रश्न
If water in one flask and castor oil in other are violently shaken and kept on a table, which will come to rest earlier?
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उत्तर
Castor oil will come to rest more quickly because it has a greater coefficient of viscosity than water.
Castor oil has a higher viscosity than water. It will therefore, lose kinetic energy and come to rest faster than water.
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संबंधित प्रश्न
'n' droplets of equal size of radius r coalesce to form a bigger drop of radius R. The energy liberated is equal to...................
(T =Surface tension of water)
`(a) 4piR^2T[n^(1/3)-1]`
`(b) 4pir^2T[n^(1/3)-1]`
`(c) 4piR^2T[n^(2/3)-1]`
`(d)4 pir^2T[n^(2/3)-1]`
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(Surface tension of water = 7 × 10-2 N/m)
