JEE Main 2012 — Capacitance Question with Solution
JEE Main 2012 (26 May Online)
Question
This question has Statement 1 and Statement 2 . Of the four choices given after the Statements, choose the one that best describes the two Statements.
Statement 1: It is not possible to make a sphere of capacity 1 farad using a conducting material.
Statement 2: It is possible for earth as its radius is .
Choose an option
Show full solutionCorrect option: D
Correct answer
DStatement 1 is true, Statement 2 is false.
Step-by-step explanation
Capacitance of sphere is given by:
If, then radius of sphere needed:
or,
is very large, it is not possible to obtain such a large sphere. Infact earth has radius only and capacitance of earth is .
Practice this on the real CBT interface
Solve this JEE Main question (and the rest of the Capacitance chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.
Solve interactively →About this question
This is a previous-year question from JEE Main 2012, covering the Capacitance 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.