Physics · 2015
NEET 2015 · 25 July · Code C · Q24
A string is stretched between fixed points separated by 75.0 cm. It is observed to have resonant frequencies of 420 Hz and 315 Hz. There are no other…
A string is stretched between fixed points separated by $\displaystyle 75.0$ cm. It is observed to have resonant frequencies of $\displaystyle 420$ Hz and $\displaystyle 315$ Hz. There are no other resonant frequencies between these two. The lowest resonant frequency for this string is :
Official answer
From NTA’s final answer key for this paper.
(2)
$\displaystyle 105$ Hz
More from Waves
- The second overtone of an open organ pipe has the same frequency as the first overtone of a closed pipe L metre long. The length of the open pipe…2016
- A pipe open at both ends has a fundamental frequency f in air. The pipe is now dipped vertically in a water drum to half of its length. The…2025
- 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…2020
- If the initial tension on a stretched string is doubled, then the ratio of the initial and final speeds of a transverse wave along the string is:2022
- A tuning fork is used to produce resonance in a glass tube. The length of the air column in this tube can be adjusted by a variable piston. At room…2018
- The fundamental frequency in an open organ pipe is equal to the third harmonic of a closed organ pipe. If the length of the closed organ pipe is 20…2018
- The two nearest harmonics of a tube closed at one end and open at other end are 220 Hz and 260 Hz. What is the fundamental frequency of the system?2017
- Three sound waves of equal amplitudes have frequencies (n-1), n,(n+1). They superimpose to give beats. The number of beats produced per second will be2016
NEET (UG) 2015 Physics question, with the answer from NTA’s final answer key. Where our answers come from.