JEE Main 2026 — Mechanical Properties of Solids Question with Solution
JEE Main 2026 (06 April Shift 1)
Question
The two wires and of equal cross-section but of different materials are joined together. The ratio of Young's modulus of wire and wire is . When the joined wire is kept under certain tension the elongations in the wires and are equal. If the length of wire is m, then the length of wire is _______ m.
Choose an option
Show full solutionCorrect option: C
Correct answer
C
Step-by-step explanation
Given that the wires have equal cross-sectional area and are under the same tension , the elongation is given by:
Since the elongations in both wires are equal ():
Substituting the given values m and :
m
Answer:
Since the elongations in both wires are equal ():
Substituting the given values m and :
m
Answer:
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This is a previous-year question from JEE Main 2026, covering the Mechanical Properties of Solids 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.