List of top Physics Questions on Stress Strain Curve asked in MHT CET

"Water is flowing through a horizontal pipe in stream line flow at the narrowest part of the pipe?"

Water is flowing through a horizontal pipe in streamline flow. At the narrowest part of the pipe:

A vessel completely filled with water has holes A and B at depths \( h \) and \( 3h \) from the top, respectively. Hole A is a square of side \( L \), and B is a circle of radius \( r \). The water flowing out per second from both the holes is the same. Then \( L \) is equal to: