MCQ
The fundamental note produced by a closed organ pipe is of frequency $f.$ The fundamental note produced by an open organ pipe of same length will be of frequency .... $(f)$
- A$0.5$
- B$1$
- ✓$2$
- D$4$
✓
Answer
Correct option: C.
$2$
c
(c) ${n_{{\rm{closed}}}} = \frac{v}{{4l}},{n_{{\rm{open}}}} = \frac{v}{{2l}}$
(c) ${n_{{\rm{closed}}}} = \frac{v}{{4l}},{n_{{\rm{open}}}} = \frac{v}{{2l}}$
==> ${n_{{\rm{open}}}} = 2{n_{{\rm{closed}}}} = 2f$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
A body of $10\, kg$ is acted by a force of $129.4\, N$ if $g = 9.8\,m/{\sec ^2}$. The acceleration of the block is $10\,m/{s^2}$. What is the coefficient of kinetic friction
→Select the correct statement regarding stream line flow
Steel wire of length ' $L$ ' at $40^{\circ} C$ is suspended from the ceiling and then a mass ' $m$ ' is hung from its free end. The wire is cooled down from $40^{\circ} C$ to $30^{\circ} C$ to regain its original length ' $L$ '. The coefficient of linear thermal expansion of the steel is $10^{-5} /{ }^{\circ} C$, Young's modulus of steel is $10^{11} N / m ^2$ and radius of the wire is $1 \ mm$. Assume that $L \gg$ diameter of the wire. Then the value of ' $m$ ' in $kg$ is nearly
→A spherical shell of $1 \,kg$ mass and radius $R$ is rolling with angular speed $\omega$ on horizontal plane (as shown in figure). The magnitude of angular momentum of the shell about the origin $O$ is $\frac{a}{3} R^{2} \omega$. The value of a will be ..............
→In our solar system, the interplanetary region has chunks of matter $($much smaller in size compared to planets$)$ called asteroids. They
→If $I,\,\alpha $ and $\tau $ are the moment of inertia, angular acceleration and torque respectively of a body rotating about an axis with angular velocity $\omega $ , then
→A newly discovered planet has a density eight times the density of the earth and a radius twice the radius of the earth. The time taken by $2\, kg$ mass to fall freely through a distance $S$ near the surface of the earth is $1$ second. Then the time taken for a $4\, kg$ mass to fall freely through the same distance $S$ near the surface of the new planet is ....... $\sec$.
→In the figure, the tension in the horizontal cord is $30\,N$. Find the weight of the body $B.$ ............ $N$
→Particle $A$ is moving along $x$-axis. At time $t=0$, it has velocity of $10\,m / s$ and acceleration $-4\,m / s ^2$. Particle $B$ has velocity of $20\,m / s$ and acceleration $-2\,m / s ^2$. Initially, both the particles are at origin. At time $t=2\,s$, distance between the two particles is $.............\,m$
→The potential energy function (in J) of a particle in a region of space is given as $U=\left(2 x^2+3 y^3+2 z\right)$. Here $\mathrm{x}, \mathrm{y}$ and $\mathrm{z}$ are in meter. The magnitude of $\mathrm{x}$ - component of force (in $\mathrm{N}$ ) acting on the particle at point $\mathrm{P}(1,2,3)\ \mathrm{m}$ is:
→