NEET 2007Medium
Q.In meter bridge, null point is obtained at 40 cm from one end. If a 10 Ω resistance is connected in series with unknown, null point shifts to 50 cm. The unknown resistance is
a
10 Ω
b
15 Ω
c
20 Ω
d
5 Ω
Correct Answer: Option A
The correct solution involves applying the fundamental concept to derive the final value step by step...