Class 11 NEET Physics Motion in a Plane Questions

The cross product

→

A

×

→

B

is a vector, with its direction perpendicular to both

→

A

and

→

B

.

→

A

×

→

B

is area. If side B is zero, area is zero.

→

A

×0 is a zero vector.
If in case 0 is a scalar, then also the product is zero. But a scalar × a vector is also a vector.Hence one gets a zero vector in any case.