Home
Class 12
PHYSICS
A wave of frequency 100Hz is sent along ...

A wave of frequency 100Hz is sent along a string towards a fixed end. When this wave traveles back then after reflection, a node is formed at a minimum distance of 10 cm from the fixed end of the string. The speed of the incident wave is.

A

40 m/s

B

20 m/s

C

10 m/s

D

5 m/s

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Similar Questions

Explore conceptually related problems

A wave frequency 100 Hz travels along a string towards its fixed end . When this wave travels back after reflection , a node is formed at a distance of 10 cm from the fixed end . The speed of the wave (incident and reflected) is

A wave pulse of frequency 200 Hz, on a string moves a distance 8 m in 0.05 s. Calculate the wavelength of wave on string.

In a standing wave 4 nodes and 3 antinodes are formed between two fixed end of string of length 6 m.Then the wave length of the standing wave is

A sinusoidal wave produced in a stretched string gets reflected and loses 36% of its energy in getting reflected from the fixed end of the string. Choose the correct statement from the

A pulse of a wavetrain travels along a stretched string and reaches the fixed end of the string. It will be reflected back with

A string of linear mass density 0.5 g cm^-1 and a total length 30 cm is tied to a fixed wall at one end and to a frictionless ring at the other end. The ring can move on a vertical rod. A wave pulse is produced on the string which moves towards the ring at a speed of 20 cm s^-1 . The pulse is symmetric about its maximum which is located at a distance of 20 cm from the end joined to the ring. (a) Assuming that the wave is reflected from the ends without loss of energy, find the time taken by the string to regain its shape. (b) The shape of the string changes periodically with time. Find this time period. (c) What is the tension in the string ?

The displacement of the medium in a sound wave is given by the equation y_(1) = A cos(ax + bt) where A , a and b are positive constants. The wave is reflected by an obstacle situated at x = 0 . The intensity of the reflected wave is 0.64 times that of the incident wave. (a) What are the wavelength and frequency of incident wave? (b) Write the equation for the reflected wave. ( c ) In the resultant wave formed after reflection, find the maximum and minimum values of the particle speeds in the medium. (d) Express the resultant wave as a superposition of a standing wave and a travelling wave. What are the positions of the antinodes of the standing wave ? What is the direction of propagation of travelling wave?

An harmonic wave has been set up on a very long string which travels along the length of the string. The wave has a frequency of 50 Hz, amplitude 1 cm and wavelength 0.5 m. find (a) the time taken by the wave to travel a distance of 8 m along the length of string (b) the time taken by a point on the string to travel a distance of 8 m, once the wave has reached the point and sets it into motion (c ) also. consider the above case when the amplitude gets doubled

A series of pulses, each of amplitude 0.150 m , are sent on a string that is attached to a wall at one end. The pulses are reflected at the wall and travel back along the string without loss of amplitude. When two waves are present on the same string. The net displacement of a given point is the sum of the displacement of the individuals waves at the point. What is the net displacement at point on the spring where two pulses am crossing, (a) if the string is rigidly attached to the post? (b) if the end at which reflection occurs is free is slide up and down ?

A string of length l is fixed at both ends and is vibrating in second harmonic. The amplitude at anti-node is 5 mm. The amplitude of a particle at distance l//8 from the fixed end is