The reading of pressure metre attached with a closed pipe is 4.5 × 10^4 N/m2 . On opening the valve, water starts flowing and the reading of pressure metre falls to 2.0 × 10^4 N/m2 . The velocity of water is found to be √Vm / s . The value of V is ________
JEE-2024
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The magnetic field at the centre of a wire loop formed by two semi circular wires of radii R1 = 2 πm and R2 = 4π m carrying current I = 4A as per figure given below is a × 10^–7 T. The value of a is ______. (Centre O is common for all segments)
