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29. In Jager’s method, at the time of bursting of the bubble

(a)  The internal pressure of the bubble is always greater than external pressure

(b)  The internal pressure of the bubble is always equal to external pressure

(c)   The internal pressure of the bubble is always less than external pressure

(d)   The internal pressure of the bubble is always slightly greater than external pressure

Ans. a

(8)

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