If the error in the measurement of head in a 'V' notch is 1%, then the error in the measurement of discharge will be
The head over a V-notch at the end of a channel is 75 cm. If an error of 0.15 cm is possible In the measurement of the head, then the percentage error in computing the discharge is
The absolute percentage error in the computed discharge over a rectangular weir corresponding to an absolute error of 1.5% in the measurement of head over the sill of the weir would be