QUESTION 1 Find the divergence of the vector yi+zj+xk. 3 -1 None of the others 1 QUESTION 2 If F is a vector field, then div curl F gives A zero value None of the others A non-zero value The zero vector A non-zero vector QUESTION 3 Find the curl of the vector A=yzi + 4xyj + yk i+yj + (4y-z)k None of the others xi+yj+(2-4y)k Ori+yj+(2-4y)k Ori+j+ (4y-z)k QUESTION 4 If F is a vector field, then div div F is Zero A scalar field Meaningless A vector field None of the others QUESTION 5 Identify the nature of the field If the curl is zero then it is rotational. If the curl is zero then it is irrotational. If the curl is non-zero then it is irrotational. None of the others If the div is non-zero then it is incompressible.