Home
Class 11
PHYSICS
Two strings, A and B, of lengths 4L and ...

Two strings, `A` and `B`, of lengths `4L` and `L` respectively and same mass `M` each, are tied together to form a knot 'O' and stretched under the same tension. A transverse wave puise is sent along the composite string from the side `A`, as shown to the right. Which of the following diagrams correctly shows the reflected and transmitted waves pulses near the knot 'O' ?

A

B

C

D

Text Solution

Verified by Experts

The correct Answer is:
A
The wave suffer a phase difference of `pi` when reflected by denser medium.
Promotional Banner

Topper's Solved these Questions

  • WAVES AND OSCILLATIONS

    ALLEN|Exercise Part-2(Example)|15 Videos

  • WAVES AND OSCILLATIONS

    ALLEN|Exercise Part-3(Example)|32 Videos

  • SEMICONDUCTORS

    ALLEN|Exercise Part-3(Exercise-4)|51 Videos

Similar Questions

Explore conceptually related problems

Two strings A and B of equal lenth but un equal linear mass density are tied together with a knot and stretched between two supports. A particular frquency happens to produce a standing wave on each part, with node at the knot as shown. If linear mass density of the two strings A and B are mu_(1) and mu_(2) respectively, then

The diagram below shows an instantaneous position of a string as a transverse progressive wave travels along it from left to right Which one of the following correctly shows the direction of the velocity of the points 1,2 and 3 on the string?

A composition string is made up by joining two strings of different masses per unit length 1g/ m and 4 g/m. The composite string is under the same tension. A transverse wave pulse : Y = (6 mm) sin(5t + 40x), where it is in seconds and 'x' in meters, is sent along the lighter string towards the joint. The joint is at x = 0. The equation of the wave pulse reflected from the joint is

A bob of mass m is connected by string of length L to point P. The system is released from rest with the pendulum bob in a horizontal position. Which of the following graph is correctly showing the variation of T (tension) with Ɵ?

A string of length L and mass M hangs freely from a fixed point . Calculate the velocity of the transverse wave along the string at any position. (b)Calculate time taken by a transverse pulse to traverse the string.

A long wire PQR is made by joining two wires PQ and QR of equal radii. PQ has length 4.8 m and mass 0.06 kg . QR has length 2.56m and mass 0.2 kg . The wire PQR is under a tension of 80N . A sinusoidal wave-pulse of amplitude 3.5cm is sent along the wire PQ from end P . No power is dissipated during the propagation of the wave-pulse. Calculate, (a) the time taken by the wave-pulse to reach the other end R of the wire, and (b) the amplitude of the reflected and transmitted wave-pulse after the incident wave-pulse crosses the joint Q .

Two ropes of length l and l/2 and mass per unit length mu and mu//4 respectively are joined at B and hanged vertically with a heavy mass at its end C. A pulse is generated simultaneously at both ends A and C which travels along the ropes. Find the distance from the top at which pulses will cross each other.

Two strings A and B are connected together end to end as shown in the figure. The ratio of mass per unit length (mu_(B))/(mu_(A))=4 . The tension in the string is same. A travelling wave is coming from the string A towards string B. if the fraction of the power of the incident wave that goes in sting B is (n)/(9) the value of n is:

Four pieces of string of length L are joined end to end to make a long string of length 4L. The linear mass density of the strings are mu,4mu,9mu and 16mu , respectively. One end of the combined string is tied to a fixed support and a transverse wave has been generated at the other end having frequency f (ignore any reflection and absorption). string has been stretched under a tension F . Find the ratio of wavelength of the wave on four string, starting from right hand side.

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 ?

ALLEN-WAVES AND OSCILLATIONS-Part-1(Exercise-05)[B]
  1. Two strings, A and B, of lengths 4L and L respectively and same mass M...

    Text Solution

    |

  2. A string of length 0.4 m and mass 10 ^(-2) kg is tightly clamped at it...

    Text Solution

    |

  3. A train moves towards a stationary observer with speed 34 m//s. The tr...

    Text Solution

    |

  4. Two vibrating string of the same material but length L and 2L have rad...

    Text Solution

    |

  5. The ends of a stretched wire of length L are fixed at x = 0 and x = L,...

    Text Solution

    |

  6. Two pulses in a stretched string whose centres are initially 8 cm apar...

    Text Solution

    |

  7. A siren placed at a railway platfrom is emitted sound of frequency 5 k...

    Text Solution

    |

  8. A somoneter wire resonates with a given tuning fork forming standing w...

    Text Solution

    |

  9. A police car moving at 22 m//s, chase a motoclist. The police man has ...

    Text Solution

    |

  10. In the experiment for the determination of the speed of sound in air u...

    Text Solution

    |

  11. A source of sound of frequency 600Hz is placed inside of water. The sp...

    Text Solution

    |

  12. A closed organ pipe of length L and an open organ pipe contain gasses ...

    Text Solution

    |

  13. A source emits sound of frequency 600Hz inside water. The frequency he...

    Text Solution

    |

  14. An open pipe is in resonance in 2nd harmonic with frequency f(1). Now ...

    Text Solution

    |

  15. A tuning fork of 512 H(Z) is used to produce resonance in a resonance ...

    Text Solution

    |

  16. A massless rod of length l is hung from the ceiling with the help of t...

    Text Solution

    |

  17. A transverse sinusoidal wave moves along a string in the positive x-di...

    Text Solution

    |

  18. A vibrating string of certain length l under a tension T resonates wit...

    Text Solution

    |

  19. The (x, y) co-ordinates of the corners of a square plate are (0, 0), (...

    Text Solution

    |

  20. A transverse sinusoidal wave of amplitude a, wavelength lamda and freq...

    Text Solution

    |

  21. As a wave propagates

    Text Solution

    |