Mathematics In Physics Test

Result

Mathematics In Physics Test - 9

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Weekly Quiz Competition

Question 1
1 / -0

If a, b and c are three non-zero vectors such that then the value of will be:

A
Less than zero

B
equal to zero

C
greater than zero

D
3

Solution

In question,
Question 2
1 / -0

Two vectors inclined at an angle θ w.r.t. each other have a resultant which makes an angle If the directions of are interchanged, then the resultant will have the same

A
magnitude

B
direction

C
magnitude as well as direction

D
neither magnitude nor direction

Solution

If are interchanged in directions only, then there will be no change in the angle between them and in their magnitudes so, the magnitude of resultant will be same but the direction will be different.
Question 3
1 / -0

A
can be zero

B
cannot be zero

C

D

Solution
Question 4
1 / -0

The vector sum of the forces of 10 N and 6 N can be

A
2 N

B
8 N

C
18 N

D
20 N

Solution

Maximum resultant of vectors = 10 + 6 = 16 N

Minimum resultant of vectors = 10 − 6 = 4 N

Force should lie in between maximum and minimum resultant of vectors.
Question 5
1 / -0

A set of vectors taken in a given order gives a closed polygon. Then the resultant of these vectors is a

A
scalar quantity

B
pseudovector

C
unit vector

D
null vector

Solution
Question 6
1 / -0

The vector sum of two vectors P and Q is minimum when the angle θ between their positive directions, is

A
π/4

B
π/3

C
π/2

D
π

Solution
Question 7
1 / -0

If the vector sum of two vectors is maximum, then the angle θ between two vectors will be:

A
0°

B
30°

C
45°

D
60°

Solution
Question 8
1 / -0

A
θ = 0°

B
θ = 90°

C
P = 0

D
Q = 0

Solution
Question 9
1 / -0

A

B

C

D

Solution
Question 10
1 / -0

A

B

C

D

Solution