The condition for the length of the convergent part (L) and the length of the divergent part (L1) in venturimeter is:
1
length of the convergent part is equal to the length of the divergent part
2
length of convergent part is greater than length of divergent part
3
there is no such restrictions for the length of convergent and divergent parts
4
length of convergent part is less than length of divergent part