JEE Main 2023 · PhysicsNumerical answerNumerical valueEasyCalculation

JEE Main 13 April 2023, Shift 2, Physics Q54

Question 54 of 90 in this shift, Physics question 24 of 30, Section B.

In an experiment with sonometer when a mass of 180 g is attached to the string, it vibrates with fundamental frequency of 30 Hz. When a mass m is attached, the string vibrates with fundamental frequency of 50 Hz. The value of m is ______ g.

Official answer

500

NTA final key.

Chapter: Waves
Topic: Waves on Strings
Idea tested: Sonometer Laws

Same idea in other shifts

Asked 4× in all

8 Apr 2023, Shift 2 · Q51A guitar string of length 90 cm vibrates with a fundamental frequency of 120 Hz. The length of the string producing a fundamental…EasyNumerical value
9 Jan 2020, Shift 2 · Q11A wire of length $L$ and mass per unit length $6.0\times10^{-3}\ \mathrm{kg\,m^{-1}}$ is put under tension of 540 N. Two consecutive…MediumSingle correct
2 Sep 2020, Shift 1 · Q10Two identical strings $X$ and $Z$ made of same material have tension $T_X$ and $T_Z$ in them. If their fundamental frequencies are 450 Hz…EasySingle correct

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.