Verified Solution • 2025–26 Session hard

QJEEM_2024_17: JEE Main 2024 JEEM_2024_17 Solution: Simple pendulum of length ‘l = 4’ is taken to height ‘R’ above…

Simple pendulum of length ‘l = 4’ is taken to height ‘R’ above earth surface calculate time period at its height {R → Radius of Earth & Taken π² = g}.

Multiple Choice Options

  • A 4 sec
  • B 8 sec
  • C 2 sec
  • D 10 sec

Step-by-Step Verified Solution

T = 2π√(l/g') => g' = g/(1 + R/R)² = g/4 => T = 8 sec

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