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7. Two capillary tubes P and Q are dipped in water. The height of water level in capillary P is 2/3 to the height in Q capillary. The ratio of their diameters is

(a) 2 : 3

(b) 3 : 2

(c) 3 : 4

(d) 4 : 3

Ans. b

(12)

5/5 - (1 vote)

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