MCQ
If speed of sound in air in $330 \,m / s$ then, find the number of tones present in an open organ pipe of length $1\, m$ whose frequency if $\leq 1000$.
- A$2$
- B$4$
- C$8$
- ✓$6$
✓
Answer
Correct option: D.
$6$
d
The expression of fundamental frequency is given by.
The expression of fundamental frequency is given by.
$f=\frac{v}{2 \ell}$
Substitute the values as,
$f=\frac{330}{2 \times 1}$
$=165 Hz$
Calculate the number of overtones allowed as,
$n =\frac{1000}{165}$
$=6$
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 thin but rigid semicircular wire frame of radius $r$ is hinged at $O$ and can rotate in its own vertical plane. A smooth peg $P$ starts from $O$ and moves horizontally with constant speed $v_0$, lifting the frame upward as shown in figure.Find the angular velocity $\omega$ of the frame when its diameter makes an angle of $60^{\circ}$ with the vertical :
→A solid circular disc of mass $50 \mathrm{~kg}$ rolls along a horizontal floor so that its center of mass has a speed of $0.4 \mathrm{~m} / \mathrm{s}$. The absolute value of work done on the disc to stop it is____ $\mathrm{J}$.
→Unit of energy is
A body of mass $2\, kg$ moving on a horizontal surface with an initial velocity of $4 \,m/sec$ comes to rest after $2\, sec$. If one wants to keep this body moving on the same surface with a velocity of $4\, m/sec$, the force required is ........ $N$
→A stone is released with acceleration $'a'$ from an upwardy moving left. Find out the acceleration and direction of the stone.
→The ends of a rope are held by two men who pulls on it with equal and opposite forces of magnitude $F$ each. Then the tension in the rope is
→Molecules of an ideal gas are known to have three translational degrees of freedom and two rotational degrees of freedom. The gas is maintained at a temperature of $T$. The total internal energy, $U$ of a mole of this gas, and the value of $\gamma\left(=\frac{ C _{ P }}{ C _{ v }}\right)$ given, respectively, by
→Which of the following is the graph between the height $(h)$ of a projectile and time $(t)$, when it is projected from the ground
→Ice starts forming in lake with water at ${0^o}C$ and when the atmospheric temperature is $ - {10^o}C$. If the time taken for $1 \;cm$ of ice be $7$ hours, then the time taken for the thickness of ice to change from $1\; cm$ to $2\; cm$ is
→Following operations can be performed on a capacitor:
$X -$ connect the capacitor to a battery of emf $\in.$
$Y -$ disconnect the battery.
$Z -$ reconnect the battery with polarity reversed.
$W -$ insert a dielectric slab in the capacitor.
→$X -$ connect the capacitor to a battery of emf $\in.$
$Y -$ disconnect the battery.
$Z -$ reconnect the battery with polarity reversed.
$W -$ insert a dielectric slab in the capacitor.