JEE Main 2020 · PhysicsMultiple choiceSingle correctEasyCalculation

JEE Main 2 September 2020, Shift 1, Physics Q10

Question 10 of 75 in this shift, Physics question 10 of 25.

Two 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 and 300 Hz, respectively, then the ratio

T_X/T_Z

is :

(1)1.5
(2)2.25Official answer
(3)1.25
(4)0.44

Official answer

Option 2

NTA final key (Sep 2020).

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
13 Apr 2023, Shift 2 · Q54In 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…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

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.