Q 11-02-082JEE MainJEE Main 2023 (10 Apr, Shift 2)Easy
A person travels $x$ distance with velocity $v_1$ and then $x$ distance with velocity $v_2$ in the same direction. The average velocity of the person is $v$, then the relation between $v$, $v_1$ and $v_2$ will be
Answer: (D) $\dfrac2v=\dfrac1{v_1}+\dfrac1{v_2}$
$v=\dfrac{2x}{\frac x{v_1}+\frac x{v_2}}\Rightarrow\dfrac2v=\dfrac1{v_1}+\dfrac1{v_2}$.
Solution by Sreeraj P, M.Sc Physics