JEE Main 2019PhysicsLaws of MotionMediumMCQ

JEE Main 2019Laws of Motion Question with Solution

JEE Main 2019 (12 Apr Shift 2)

Question

A spring whose unstrentches length is l has a force constant k. The spring is cut into two pieces of unstretches lengths l1 and l2 where, l1=nl2 and n is an integer. The ratio k1/k2  of the corresponding force constants, k1 and k2 will be:

Choose an option

Show full solutionCorrect option: D
Correct answer
D1n

Step-by-step explanation

Spring constants of the spring will be inversely proportional to length.
k1k2=l2l1=1n

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About this question

This is a previous-year question from JEE Main 2019, covering the Laws of Motion 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.