A vector $\vec{A}$ is rotated by a small angle $\Delta \theta \operatorname{radian}(\Delta \theta<<1)$ to get a new vector $\vec{B}$. In that case $|\vec{B}-\vec{A}|$ is :

Question:

A vector $\vec{A}$ is rotated by a small angle $\Delta \theta \operatorname{radian}(\Delta \theta<<1)$

to get a new vector $\vec{B}$. In that case $|\vec{B}-\vec{A}|$ is :

1. $|\overrightarrow{\mathrm{A}}| \Delta \theta$

2. $|\overrightarrow{\mathrm{B}}| \Delta \theta-|\overrightarrow{\mathrm{A}}|$

3. $|\overrightarrow{\mathrm{A}}|\left(1-\frac{\Delta \theta^{2}}{2}\right)$

4. 0

JEE Main Previous Year Single Correct Question of JEE Main from Physics Motion in a Plane chapter.

JEE Main Previous Year April 11, 2015

Correct Option: 1

Solution: