JEE Main201910 Apr 2019Morning ShiftPhysicsExperimental PhysicsActual
In a meter bridge experiment, the circuit diagram and the corresponding observation table are shown in figure. S. No. R Ω l c m 1. 2. 3. 4. 1000 100 10 1 60 13 1.5 1.0 Which of the reading is inconsistent?
Options
- A1
- B3
- C2
- D4
Correct answer
D. 4
Step-by-step solution
For meter bridge: R l = X 100 - l 1 → 1000 60 = X 40 ⇒ X = 2000 3 = 666.67 Ω 2 → 100 13 = X 27 ⇒ X = 669.23 Ω 3 → 10 1.5 = X 98.5 ⇒ X = 656.67 Ω 4 → 1 1 = X 99 ⇒ X = 99 Ω Resistance calculated by using data from 4 th observation is most inconsistent.