Home
Class 12
PHYSICS
A metal rod of 1 m length, is dropped ex...

A metal rod of 1 m length, is dropped exact vertically on to hard metal Noor. Plate capacitor is to be designed, it is determined that the impact produces a longitudinal wave of 1.2 kHz frequency. The speed of sound in the metal rod is:

A

600 m/s

B

2400 m/s

C

1800 m/s

D

1200 m/s

Text Solution

Verified by Experts

The correct Answer is:
B
`f = V/(2l)`
`1.2 xx 10^3 Hz = V/(2 xx 1)`
`V = 2.4 xx 10^3 m//s`
Promotional Banner

Topper's Solved these Questions

  • WAVES

    PHYSICS WALLAH|Exercise LEVEL - 2|30 Videos

  • WAVE OPTICS

    PHYSICS WALLAH|Exercise Neet Past 5 Years Questions|16 Videos

  • WORK, ENERGY AND POWER

    PHYSICS WALLAH|Exercise NEET Past 5 Years Questions|16 Videos

Similar Questions

Explore conceptually related problems

In a Kundt's tube , the length of the iron rod is 1 m . The stationary waves frequency 2500 Hz are produced in it. The velocity of sound in iron is

A steel rod 100 cm long is clamped at its centre. The fundmental frequency of longitudinal viberations of the rod are given to be 2.53kHz. What is the speed of sound is steel?

A copper rod of length 1.0 m is clamped at its middle point. Find the frequencies between 20 Hz and 20,000 Hz at which standing longitudinal waves can be set up in the rod. The speed of sound in copper is 3.8 km s^-1 .

A metallic rod of length 1m is rigidly clamped at its end points. Longitudinal stationary waves are setup in the ord in such a way that there six antinodes of displacement wave observed along the rod. The amplitude of the anotinode is 2 xx 10^(-6) m . Write the equations of the stationary wave and the component waves at the point 0.1 m from the one end of the rod. [Young modulus = 7.5 xx 10^(10)N//m^(2) , density = 2500 kg//m^(3) ]

A metal rod 40 cm long is dropped on to a wooden floor and rebounds into air . Compressional waves of many frequencies are thereby set up in the rod . If the speed of compressional waves in the rod in 5500 m//s , what is the lowest frequency of compressional waves to which the rod resonates as it rebounds?

A uniform metal rod of length 1m is bent at 90^(@) , so as to form two arms of equal length. The centre of mass of this bent rod is