Q. In a meter bridge experiment, the ratio of the left gap resistance to right gap resistance is 2:3, the balance point from left is
A) 60 cm
B) 50 cm
C) 40 cm
D) 20 cm
Explanation
(c) Here, $\frac{P}{Q} = \frac{2}{3}$
we know
$\frac{P}{Q} = \frac{l}{100 - l}$
$\Longrightarrow \ \frac{2}{3} = \frac{l}{100 - l}$
$\Longrightarrow l = 40\ cm$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.