Question

46. A vector of zero magnitude which has no direction associated with it is ^called (A) Unit Vector (B) Null Vector (C) Polar Vector (D) none of these​

Answer 1

Answer:

null vector

Explanation:

Zero Vector or null vector is a vector which has zero magnitude and an arbitrary direction.

It is represented by 0 Ԧ . If a vector is multiplied by zero, the result is a zero vector.

If a Ԧ = −b → , then a Ԧ +b Ԧ = 0 Ԧ It is important to note that we cannot take the above result to be a number, the result has

to be a vector and here lies the importance of the zero or null vector. The physical

meaning of 0 Ԧ can be understood from the following examples.

 The position vector of the origin of the coordinate axes is a zero vector.

 The displacement of a stationary particle from time t to time tl is zero.

 The displacement of a ball thrown up and received back by the thrower is a zero

vector.

 The velocity vector of a stationary body is a zero vector.

 The acceleration vector of a body in uniform motion is a zero vector.

Answer 2

Answer:

Null Vector, Option (B),

Explanation:

may I hope this will help you.