Verified Solution • 2025–26 Session moderate

QJEEM20Ph51e3: JEE Main 2020 Physics - Class 11 JEEM20Ph51e3 Solution: Two steel wires having same length are suspended from a ceiling …

Two steel wires having same length are suspended from a ceiling under the same load. If the ratio of their energy stored per unit volume is 1 : 4, the ratio of their diameters is:

Multiple Choice Options

  • A 1:02
  • B 2:01
  • C 1:02
  • D 2:01

Step-by-Step Verified Solution

dudv = 12 × stress × strain

= 12FA×FAY ∝ 1A2 ∝ 1d4

dudv = 14

⇒ (d1d2)4 = 4

⇒ d1d2=(4)14 = 2:1

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