Physics · PYQ NEET UG 2019(2)

A person travelling in a straight line moves with a constant velocity \( v_1 \) for certain distance 'x' and with a constant velocity \( v_2 \) for next equal distance. The average velocity v is given by the relation

1. A
   \( v = \sqrt{v_1 v_2} \)
2. B
   \( \frac{1}{v} = \frac{1}{v_1} + \frac{1}{v_2} \)
3. C
   \( \frac{2}{v} = \frac{1}{v_1} + \frac{1}{v_2} \)
4. D
   \( v = \frac{v_1 + v_2}{2} \)