NEET UG 2020 · Physics · Question 147
NEET 2020 Physics, question 147
Question 147 of the NEET 2020 paper (code E1) is a Physics question from Waves. Its idea, Beats and String Tension, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 2.
Updated 2026-10-08
Q147 · Physics
In a guitar, two strings A and B made of same material are slightly out of tune and produce beats of frequency 6 Hz. When tension in B is slightly decreased, the beat frequency increases to 7 Hz. If the frequency of A is 530 Hz, the original frequency of B will be :
- 1523 Hz
- 2524 HzOfficial answer
- 3536 Hz
- 4537 Hz
Official answer: option 2 · NTA final answer key
Same idea
The only question on Beats and String Tension
No other NEET paper from 2017–2026 tested this exact idea.
Beats and String Tension: every question and how it was framed
The chapter
Waves in ten years of NEET
9 questions from 2017–2026, asked in 7 of 10 papers, about 0.9 a paper. Standing Waves, Organ Pipes and Beats alone had 7.