Question
If the velocity (V1) of a car is 20m/s and velocity (V2) of bike is 40m/s, where both velocities are southward then which of the following would be the dot product of these velocities?
Select correct option:
-800
Zero
800 (not sure)
2
Question
The surface:z=f(x,y) neither falls nor rises(decreases or increases) at any point in the ——of Gradient(z).
Select correct option:
Direction
Opposite to the direction
Direction perpendicular to
Arbitrary direction
Question
Vector product of two non-zero vectors lying in xy-plane results into———.
Select correct option:
a vector perpendicular to least one vector
a vector perpendicular to both vectors
a vector not perpendicular to both vectors (not sure)
a scalar
Question
If two of the vectors are collinear among three non-zero vectors then their Scalar Triple Product is———-.
Select correct option:
3
-1
1
0
Question
If two dogs are pulling a bone with force=20Newtons in opposite direction, then the angle b/w two forces is——— degree
Select correct option:
180
Zero
90
270
Question
How many directional derivatives can be found at any point on the surface:z = f(x,y)?
Select correct option:
Unique
No such derivative can be found
Finitely many
Infinitely many
Question
Length or magnitude of a unit vector is——–.
Select correct option:
0
1
Question
Value of money is an example of ——– quantity
Select correct option:
Scalar
Vector
Question
A zero vector has magnitude equal to zero and makes an angle of ———- degree with x-axis.
Select correct option:
Arbitrary
Only zero
90
180
Question
If a vector of magnitude ‘4’ is making angle 30-degree with Y-axis then its component vector along x-axis is ———-.
Select correct option:
2
2*sqrt(3)
-2
-2*sqrt(3)