Vectors and Its Types

Q.

Assertion: Two vectors are said to be like vectors if they have the same direction but different magnitude.

Reason: Vector quantities do not have a specific direction.

1. both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

2. both Assertion and Reason are true but Reason is not the correct explanation of the Assertion.

3. Assertion is true but Reason is false.

4. Assertion is false but Reason is true.

5. Assertion and Reason both are false.

Q.

In a clockwise system

1. $\hat{j}\times \hat{k}=\hat{i}$

2. $\hat{i}.\hat{i}=0$

3. $\hat{j}\times \hat{j}=1$

4. $\hat{k}.\hat{j}=1$

Q. Find the angle between $\overrightarrow{A}$ and $\overrightarrow{B}$ in degrees.

1. 150
2. 180
3. 130
4. 30

Q. What is the angle between a vector and its negative vector?

1. $0$
2. $\frac{\pi }{2}$
3. $\pi$
4. $\frac{3\pi }{2}$

Q.

Which of the given vector is a negative vector?

1. Vector A

2. Vector B

3. There is no such thing as Negative Vector

4. None of these

Q.

Angular momentum is

1. A scalar

2. A polar vector

3. An axial vector

4. None of these

Q. The angle between vector $\overrightarrow{A}$ and $-2\overrightarrow{A}$ is

1. $0^{\circ }$
2. ${180}^{\circ }$
3. ${360}^{\circ }$
4. ${90}^{\circ }$

Q. When two vectors lie in a plane, then these vectors are called

1. collinear
2. coplanar
3. null
4. parallel

Q. If the speed of an object Is 3 m/s in front of a plane mirror, the speed of the image w.r.t object is

1. Zero
2. 3 m/s
3. 6 m/s
4. Infinite

Q.

Which of the given 2 vectors are same?

1. (A) & (C)

2. (C) & (B)

3. both option (A) & (B)

4. None of these