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Questions  

The area of two holes A and B are 2a and a, respectively. The holes are at height (H/3) and (2H/3) from the surface of water. Find the correct option(s):

a
The velocity of efflux at hole B is 2 times the velocity of efflux at hole A.
b
The velocity of efflux at hole B is 2 times the velocity of efflux at hole A.
c
The discharge is same through both the holes.
d
The discharge through hole A is 2 time the discharge through hole B.

detailed solution

Correct option is B

VA=2gH31/2VB=4gH31/2=22gH31/2=2VAQA=VA(2a)and QB=VB(a)=VA2(a)    QAQB=2

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