MCQ
When a sound wave of frequency $300 Hz$ passes through a medium the maximum displacement of a particle of the medium is $0.1 cm$. The maximum velocity of the particle is equal to
- ✓$60\pi cm/sec$
- B$30\pi cm/sec$
- C$30 cm/sec$
- D$60 cm/sec$
✓
Answer
Correct option: A.
$60\pi cm/sec$
a
(a) ${v_{\max }} = a\omega = a \times 2\pi n = 0.1 \times 2\pi \times 300 = 60\pi \,cm/\sec $
(a) ${v_{\max }} = a\omega = a \times 2\pi n = 0.1 \times 2\pi \times 300 = 60\pi \,cm/\sec $
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
Two blocks $M_1$ and $M_2$ having equal mass are free to move on a horizontal frictionless surface. $M_2$ is attached to a massless spring as shown in. Iniially $M_2$ is at rest and $M_1$ is moving toward $M_2$ with speed v and collides head$-$on with $M_2$.
→A thin uniform rod of length $L$ and certain mass is kept on a frictionless horizontal table with a massless string of length $L$ fixed to one end (top view is shown in the figure). The other end of the string is pivoted to a point $O$. If a horizontal impulse $P$ is imparted to the rod at a distance $x=L / n$ from the mid-point of the rod (see figure), then the rod and string revolve together around the point $O$, with the rod remaining aligned with the string. In such a case, the value of $n$ is. . . . . .
→Two liquids of densities $\rho_{1}$ and $\rho_{2}\left(\rho_{2}=2 \rho_{1}\right)$ are filled up behind a square wall of side $10\; \mathrm{m}$ as shown in figure. Each liquid has a height of $5 \;\mathrm{m} .$ The ratio of the forces due to these liquids exerted on upper part $MN$ to that at the lower pait $NO$ is (Assume that the liquids are not mixing)
→Two rods of different materials having coefficient of thermal expansion $\alpha_1,\alpha_2$ and Young's modulus $Y_1, Y_2$, respectively are fixed between two rigid massive walls. The rods are heated such that they undergo the same increase in temperature. There is no bending of the rods. If $\alpha_1:\alpha_2=2:3,$ the thermal stresses developed in the two rods are equal provided $Y_1 : Y_2$ is equal to:
→A $43\, m$ long rope of mass $5.0\, kg$ joins two rock climbers. One climber strikes the rope and the second one feels the effect $1.4\, s$ later. What is the tension in the rope .... $N$ ?
→No other thermometer is as suitable as a platinum resistance thermometer to measure temperature in the entire range of
Two satellites of earth, $S_1$ and $S_2$ are moving in the same orbit. The mass of $S_1$ is four times the mass of $S_2.$ Which one of the following statements is true?
→The kerosene oil rises up in the wick of a lamp ...........
If a particle moves from point $P (2,3,5)$ to point $Q (3,4,5)$. Its displacement vector be
→forceA particle moves with constant speed $v$ along a circular path of radius $r$ and completes the circle in time $T$. The acceleration of the particle is
→