Directions: In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:
If an oil drop is poured on water, then it will: (1) remain spherical on water surface (2) spread as thin film (3) become distored drop (4) partly spherical and partly distortedA) 1 and 2 are correct
B) 2 and 3 are correct
C) 1 and 4 and correct
D) 1, 2 and 4 are correct
Correct Answer: A
Solution :
If the force of surface tension of oil is greater or equal than that of water, the oil drop will remain spherical on water surface. If the force of surface tension of oil is greater or equal than that of water, the oil drop will remain spherical on water surface. If the force surface tension of the coil is less than surface tension of water, the oil drop will spread as thin film.
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