MCQ
An empty vessel is partially filled with water. The frequency of vibration of air column in the vessel:
- ✓Decreases.
- BIncreases.
- CDepends on the purity of water.
- DRemains the same.
✓
Answer
Correct option: A.
Decreases.
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
in circular plate of mass $M$ and radius $R$ has its density varying as $p\left( r \right) = {p_0}\,r$ with $P_0$ as constant and $r$ is the distance from its center. The moment of Inertia of the circular plate about an axis perpendicular to the plate and passing through its edge is $I = aMR^2$ . The value of the coefficient $a$ is
→A barometer tube reads $ 76 cm $ of mercury. If the tube is gradually inclined at an angle of $ 60°$ with vertical, keeping the open end immersed in the mercury reservoir, the length of the mercury column will be ........ $cm$
→What is meant by mean free path?
The thermal conductivity of a material in $CGS$ system is $0.4$ . In steady state, the rate of flow of heat $10 cal/sec-cm2$ , then the thermal gradient will be ....... $^oC/cm$
→A solid sphere rolls without slipping and presses a spring of spring constant $k$ as shown in figure. Then, the maximum compression in the spring will be
→Two point masses $M$ each are placed at $(L, 0)$ & $(-L, 0)$ . A third point mass $M$ is uniformly rotating on the circle $x^2 + y^2 = L^2$ . Equation of path traced by $COM$ of $3$ point masses is
→The motion of a particle as per $x=Asin \omega t + Bcos\omega t$ is :-
→A body is pulled along a rough horizontal surface with a velocity $6\,m/s$. If the body comes to rest after travelling $9\,m$ , then coefficient of sliding friction, is- (Take $g = 10\,m/s^2$ )
→A bag is gently dropped on a conveyor belt moving at a speed of $2\,m / s$. The coefficient of friction between the conveyor belt and bag is $0.4$ Initially, the bag slips on the belt before it stops due to friction. The distance travelled by the bag on the belt during slipping motion is $.....m$ [Take $g=10\,m / s ^{-2}$ ]
→Fundamental frequency of an open pipe of length $0.5 m$ is equal to the frequency of the first overtone of a closed pipe of length $l$. The value of $l_c$ is $(m)$
→