Published by:
CGP EDU Academic Team
Published on: August 23, 2026
A bar magnet has total length 
units and the field point 
is at a distance 
units from the centre of the magnet. If the relative uncertainty of length measurement is 
, then uncertainty of the magnetic field at point 
is :
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
-
(b, / c)
Method-1 :
Without considering uncentainity in 
.
% uncertainity in 
Method-2 :
With considering uncentainity in 
.
% uncertainity in 
──────────────────────────────────────────────────────────────────────────────────────────
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
Section - A
A uniform magnetic field of 0.4 T acts perpendicular to a circular copper disc 20 cm in…
A parallel plate capacitor of capacitance is charged to a potential difference of 20 V . The dista…
Match List-I with List-II
List-I List-II
The ratio of vapour densities of two gases at the same temperature is , then the ratio of r.m.s. v…
The kinetic energy of translation of the molecules in 50 g of gas at is :
In a long glass tube, mixture of two liquids A and B with refractive indices 1.3 and 1.4 respective…