Embibe Experts Solutions for Chapter: Waves, Exercise 1: NEET - 1st May 2016

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:

The length of the string of a musical instrument is $90 \mathrm{cm}$ and has a fundamental frequency of $120 \mathrm{Hz}$ Where should it be pressed to produce fundamental frequency of $180 \mathrm{Hz}?$

In a guitar, two strings $\mathrm{A}$ and $\mathrm{B}$ made of same material are slightly out of tune and produce beats of frequency $6 \mathrm{Hz}$. When tension in $\mathrm{B}$ is slightly decreased, the beat frequency increases to $7 \mathrm{Hz}$. If the frequency of $\mathrm{A}$ is $530 \mathrm{Hz}$, the original frequency of $\mathrm{B}$ will be:

The fundamental frequency in an open organ pipe is equal to the third harmonic of closed organ pipe. If the length of the closed organ pipe is 20 cm, the length of the open organ pipe is

A tuning fork is used to produce resonance in glass tube. The length of the air column in this tube can be adjusted by a variable piston. At room temperature of ${27}^{\mathrm{ o}}\mathrm{C}$ two successive resonances are produced at $20 \mathrm{cm}$ and $73 \mathrm{cm}$ of column length. If the frequency of the tuning fork is $320 \mathrm{Hz}$, the velocity of sound in air at ${27}^{\mathrm{ o}}\mathrm{C}$ is

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?

If $n_1, n_2$ and $n_3$ are the fundamental frequencies of three segments into which a string is divided, then the original fundamental frequency $n$ of the string is given by:

The number of possible natural oscillations of air column in a pipe closed at one end of length $85 \mathrm{c}\mathrm{m}$ whose frequencies lies below $1250\mathrm{ }\mathrm{H}\mathrm{z}$ are: (velocity of sound $=340 {\mathrm{m}\mathrm{s}}^{-1}$)