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:

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