Jee Main
Simple Harmonic Motion
JEE Main 2026 (Online) 23rd January Morning Shift
MCQ+4 / -12026
A simple pendulum of string length 30 cm performs 20 oscillations in 10 s . The length of the string required for the pendulum to perform 40 oscillations in the same time duration is
$\_\_\_\_$ cm . [Assume that the mass of the pendulum remains same.]