Question

For a particle whose speed decreases as it undergoes a circular motion with instantaneous velocity $\overrightarrow{v}$,

जब एक कण तात्क्षणिक वेग $\overrightarrow{v}$ से वृत्तीय गति करता है, इसकी चाल घटती है, तब इस कण के लिए

• A. $\left|\frac{d\overrightarrow{v}}{dt}\right|\ne 0$
• B. $\frac{d\left|\overrightarrow{v}\right|}{dt}=0$
• C. $\frac{d\overrightarrow{v}}{dt}\cdot \overrightarrow{v}=0$
• D. $\left|\frac{d\overrightarrow{v}}{dt}\times \overrightarrow{v}\right|=0$

Answer 1

The correct option is A $\left|\frac{d\overrightarrow{v}}{dt}\right|\ne 0$

Solution