Home
Class 11
PHYSICS
A steel tube of length 1.00 m is struck ...

A steel tube of length 1.00 m is struck at one end. A person with his er close to the othr end hears the sound of the blow twice one travelign through the body of the tube and the other through the air in the tube. Find the time gap between the two hearings. Use the table in the next for speeds of sound in various substances.

Text Solution

Verified by Experts

The correct Answer is:
B
`V_(air)=330 m/s, V=5200m/s`
Here, `s=7`m
So, `t=t_1-t_2=(1/330-1/5200)`
`=2375xx10^-3sec`
`=2.75ms`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • SOUND WAVES

    HC VERMA|Exercise Objective -2|5 Videos

  • SOME MECHANICAL PROPERTIES OF MATTER

    HC VERMA|Exercise Exercises|32 Videos

  • SPECIFIC HEAT CAPACITIES OF GASES

    HC VERMA|Exercise Exercises|35 Videos

Similar Questions

Explore conceptually related problems

A man strikes one end of a thin rod with a hammer. The speed of sound in the rod is 15 times the speed of sound in air. A woman, at the other end with her ear close to the rod, hears the sound of the blow twice with a 60 ms interval between, one sound comes through the rod and the other comes through the air alongside the rod. If the speed of sound in air is 343 m/s, what is the length of the rod?

A cylindrical pipe of length 28 cm closed at one end is found to be at resonance when a tuning fork of frequency 850Hz is sounded near the open end. Find the mode of vibration of the air in the pipe value of the end - correction. (take the speed of sound in air as 340 m/s)

Knowledge Check

  • An organ pipe of effective length 0.6 m is closed at one end . Given that the speed of the sound in air is 300 m// sec , the two lowest frequencies for the pipe are

    A
    250 Hz, 750 Hz
    B
    250 Hz , 500 Hz
    C
    125 Hz, 375 Hz
    D
    125 Hz , 250 Hz

  • An air column in a resonace tube of length 1.5 m resonates with a source of frequency 125 Hz, when the water level in it at a certain height from the bottom of the tube. What is the height of water level corresponding to the fundamental frequency ? ( Neglect the end correction and speed of sound in air is 330 m/s)

    A
    `1.2` m
    B
    `0.5` m
    C
    `0.84` m
    D
    `0.42` m

  • If the two tubes of lengths 50cm and 51cm closed at one end produce 7 beats in two second, when sounded to their fundamental notes neglecting end correction , then velocity of sound in air will be

    A
    350m/s
    B
    352m/s
    C
    354m/s
    D
    357m/s

    • Similar Questions

    Explore conceptually related problems

    An adibatic cylindrical tube of cross-sectional area 1 cm^(2) is closed at one end fitted with a piston at the other end. The tube contains 0.03 g of an ideal gas . At 1 atm pressure and at the temperture of the surrounding, the length of the gas column. The pressure of the gas falls to 0.355 atm . Find th speed of sound in the gas at atmospheric temperture.

    If a person places his ear to one end of a long iron pipeline, he can distinctly hear two sounds when a workman hammers the other end of the pipeline. How ?

    A horizontal tube of length l, with a small orifice at one end open at the other is first filled with a liquid of density rho and then rotated with angular velocity omega about the vertical axis through the open end. Find the velocity of efflux in terms of the length h of the liquid left in the tube.

    A cylindrical metal tube has a length of 50 cm and is open at both ends. Find the frequencies between 1000 Hz and 2000 Hz at which the air column in the tube can resonate. Speed of sound in air is 340 m s^-1 .

    two pipes have each of length 2 m, one is closed at on end and the other is open at both ends. The speed of sound in air is 340 m/s . The frequency at which both can resonate is ?

    Home
    Profile