Chap#02 Vectors and Scalars

Question 1

Which of the following is a scalar quantity?

Answer 1

Density

Question 2

Which of the following is the only vector quantity?

Answer 2

Momentum

Question 3

Which of the following lists of physical quantities consists only o vectors:

Answer 3

Force, acceleration, velocity

Question 4

The angle between rectangular components of a vector is:

Answer 4

90°

Question 5

A force of 10N is acting along the y-axis. Its component along x-axis is:

Answer 5

Zero

Question 6

Two forces are acting together on an object. The magnitude of their resultant is minimum when the angle between the force is:

Answer 6

180°

Question 7

Two forces of 10N and 15N are acting simultaneously on an object in the same direction. Their resultant is:

Answer 7

25N

Question 8

If the dot product of two non-zero vectors vanishes, the vectors will be:

Answer 8

Perpendicular to each other

Question 9

If two non-zero vectors A and B are parallel to each other, then A . B is equal to:

Answer 9

AB

Question 10

The dot product of two vectors is negative when:

Answer 10

They are anit-parallel vectors