During the active phase of labour, the minimum effective dilatation of the cervix in primigravida should be at the rate of
Dilatation of cervix1cm/hr in primigravidae1.5cm/hr in multigravidaeD.C.DUTTA&;S TEXTBOOK OF GYNECOLOGY, Pg no;130,7th edition
0.5 cm/hour
1 cm/hour
1.5 cm/hour
2.5 cm/hour
General obstetrics