Two forces, ${\mathrm{F}}_{1}$ and ${\mathrm{F}}_{2}$ are acting on a body. One force is doubled of the other force and the resultant is equal to the greater force. Then the angle between the two forces is -

(A)

(B)

(C)

(D)

Concept Questions :-

Resultant of Vectors
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

If the angle between vector a and b is an acute angle, then the difference a$-$b is -

(A)  the main diagonal of the parallelogram

(B)  the minor diagonal of the parallelogram

(C)  any of the above

(D)  none of the above

Concept Questions :-

Resultant of Vectors
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

What displacement must be added to the displacement   to give a displacement of  pointing in the x-direction?

(A)

(B)

(C)

(D)

Concept Questions :-

Resultant of Vectors
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

The value of unit vector in the direction of vector , is -

(A)  $\stackrel{^}{\mathrm{i}}$

(B)  $\stackrel{^}{\mathrm{j}}$

(C)  $\left(\stackrel{^}{\mathrm{i}}+\stackrel{^}{\mathrm{j}}\right)/13$

(D)

Concept Questions :-

Resultant of Vectors
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

A child pulls a box with a force of  at an angle of $60°$above the horizontal. Then the horizontal and vertical components of the force are -

(A)  100 N, 175 N

(B)  86.6 N, 100 N

(C)  100 N, 86.6 N

(D)  100 N, 0 N

Concept Questions :-

Resolution of vectors
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

A man rows a boat with a speed of  in northwest direction. The shoreline makes an angle of $15°$ south of west. Obtain the component of the velocity of the boat along the shoreline.

(A)

(B)

(C)

(D)

Concept Questions :-

Resolution of vectors
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

A bird moves from point (1, -2) to (4, 2). If the speed of the bird is 10 m/sec, then the velocity vector of the bird is:

(A)  $5\left(\stackrel{^}{\mathrm{i}}-2\stackrel{^}{\mathrm{j}}\right)$

(B)  $5\left(4\stackrel{^}{\mathrm{i}}+2\stackrel{^}{\mathrm{j}}\right)$

(C)  $0.6\stackrel{^}{\mathrm{i}}+0.8\stackrel{^}{\mathrm{j}}$

(D)  $6\stackrel{^}{\mathrm{i}}+8\stackrel{^}{\mathrm{j}}$

Concept Questions :-

Resultant of Vectors
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

Which of the following is perpendicular to $\stackrel{^}{\mathrm{i}}-\stackrel{^}{\mathrm{j}}-\stackrel{^}{\mathrm{k}}$ ?

(A)  $\stackrel{^}{\mathrm{i}}+\stackrel{^}{\mathrm{j}}+\stackrel{^}{\mathrm{k}}$

(B)  $-\stackrel{^}{\mathrm{i}}+\stackrel{^}{\mathrm{j}}+\stackrel{^}{\mathrm{k}}$

(C)  $\stackrel{^}{\mathrm{i}}+\stackrel{^}{\mathrm{j}}-\stackrel{^}{\mathrm{k}}$

(D)  None of these

Concept Questions :-

Scalar Product
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

If the angle between the unit vectors $\stackrel{^}{\mathrm{a}}$ and $\stackrel{^}{\mathrm{b}}$ is $60°$, then $|\stackrel{^}{\mathrm{a}}-\stackrel{^}{\mathrm{b}}|$ is :

(A)  0

(B)  1

(C)  2

(D)  4

Concept Questions :-

Resultant of Vectors
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

For the figure -

1.  A+B=C

2.  B+C=A

3.  C+A=B

4.  A+B+C=0

Concept Questions :-

Resultant of Vectors