it is easier to see through the glass tube

glass tube is cheaper than a metallic tube

it is not possible to conduct this experiment with any other tube

all of the above

Correct

Incorrect

length of both the pipes is same

diameter of both the pipes is same

loss of head and discharge of both the pipes is same

loss of head and velocity of flow in both the pipes is same

double

four times

eight times

sixteen times

higher

lower

zero

none of these