JEE Main 2017PhysicsMathematics in PhysicsMediumMCQ

JEE Main 2017 — Mathematics in Physics Question with Solution

JEE Main 2017 (02 Apr)

Question

The following observations were taken for determining surface tension T of water by capillary method:

diameter of capillary, D=1.25×10-2 m

rise of water, h=1.45×10-2 m

Using g=9.80 m s-2 and the simplified relation T=rhg2×103 N m-1 the possible error in surface tension is closest to:

Choose an option

Show full solutionCorrect option: C
Correct answer
C1.5%

Step-by-step explanation

Percentage error in surface tension 

∆TT=∆rr+∆hh

∆rr=∆DD=0.011.25

∆hh=0.011.45

∴% error in T=∆TT×100=0.011.25+0.011.45×100=1.489≈1.5

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About this question

This is a previous-year question from JEE Main 2017, covering the Mathematics in 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.