Vectors Test

Result

Vectors Test - 25

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Weekly Quiz Competition

Question 1
4 / -1

A particle has displacement of 12 m towards east and 5 m towards north then 6 m vertically upward. The sum of these displacement is

A
12 m

B
10.04 m

C
14.31 m

D
None of these

Solution
Question 2
4 / -1

Three concurrent forces of the same magnitude are in equilibrium. What is the angle between the force ? Also name the triangle formed by the forces as sides

A
60° equilateral triangle

B
120° equilateral triangle

C
120°, 30°, 30° an isosceles triangle

D
120° an obtuse angled triangle

Solution
Question 3
4 / -1

For the figure

A

B

C

D
Question 4
4 / -1

A

B

C

D

Solution
Question 5
4 / -1

Following sets of three forces act on a body. Whoseresultant cannot be zero

A
10, 10, 10

B
10, 10, 20

C
10, 20, 23

D
10, 20, 40
Question 6
4 / -1

Two forces 3 N and 2 N are at an angle θ such that the resultant is R. The first force is now increased to 6 N and the resultant become 2R. The value of θ is

A
30°

B
60°

C
90°

D
120°

Solution
Question 7
4 / -1

The sum of two forces acting at a point is 16 N. If the resultant force is 8 N and its direction is perpendicular to smaller force then the forces are

A
6 N and 10 N

B
8 N and 7 N

C
4 N and 12 N

D
2 N and 14 N

Solution
Question 8
4 / -1

Which pair of the following forces will never give (c) 2 N and 2 N (c) 1 N and 3 Nresultant force of 2 N

A
2 N and 2 N

B
1N and 1 N

C
1 N and 3 N

D
N and 4 N

Solution
Question 9
4 / -1

The resultant of two vectors A and B is perpendicular to the vector A and its magnitude is equal to half the magnitude of vector B. The angle between A and B is

A
120°

B
150°

C
135°

D
None of these

Solution
Question 10
4 / -1

A
Zero

B
tan^–1(P/Q)

C
tan^–1(Q / P)

D
tan^–1(P / Q)(P + Q)

Solution