JEE Main 2012 — Units and Dimensions Question with Solution
JEE Main 2012 (12 May Online)
Question
A student measured the diameter of a wire using a screw gauge with the least count and listed the measurements. The measured value should be recorded as
Choose an option
Show full solutionCorrect option: D
Correct answer
D
Step-by-step explanation
The least count (L.C.) of a screw guage is the smallest length which can be measured accurately with it.
As least count is
Hence measured value should be recorded upto 3 decimal places i.e.,
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This is a previous-year question from JEE Main 2012, covering the Units and Dimensions 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.