If $V_r$ is real expansion of liquid, $V_a$ is apparent expansion and $V_b$ is expansion of bulb, then —

Question

Accepted Answer

$V_r = V_a - V_b$

Answer

$V_a = V_r - V_b$

Answer

$V_a = V_r + V_b$

Answer

$V_r = V_b - V_a$

If VrV_rVr​ is real expansion of liquid, VaV_aVa​ is apparent expansion and VbV_bVb​ is expansion of bulb, then —