JEE Main 2019PhysicsExperimental PhysicsHardMCQ

JEE Main 2019 — Experimental Physics Question with Solution

JEE Main 2019 (10 Apr Shift 1)

Question

In a meter bridge experiment, the circuit diagram and the corresponding observation table are shown in figure.
S. No. RΩ lcm

1.
2.
3.
4.
1000
100
10
1
60
13
1.5
1.0

Which of the reading is inconsistent?

Choose an option

Show full solutionCorrect option: D
Correct answer
D4

Step-by-step explanation

For meter bridge:  Rl=X100-l
1→100060=X40⇒X=20003=666.67 Ω
2→10013=X27⇒X=669.23 Ω
3→101.5=X98.5⇒X=656.67 Ω
4→11=X99⇒X=99 Ω
Resistance calculated by using data from 4th observation is most inconsistent.

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About this question

This is a previous-year question from JEE Main 2019, covering the Experimental Physics chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.