Home
Class 12
PHYSICS
The equation of a wave is y=A sin (2pint...

The equation of a wave is `y=A sin (2pint) `When it is reflected at a free end its amplitude becomes 90% The equation of the reflected wave is

A

` y= 0.9 A sin ( 2pi nt + pi ) `

B

` y=(A)/( 9)sin ( 2pint ) `

C

` y= 0.9 A sin (2pint ) `

D

` y= 9 A sin (2pint ) `

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • WAVE MOTION

    TARGET PUBLICATION|Exercise MCQ 7.1|61 Videos

  • SURFACE TENSION

    TARGET PUBLICATION|Exercise EVALUATION TEST|21 Videos

  • WAVE THEORY OF LIGHT

    TARGET PUBLICATION|Exercise EVALUATION TEST|20 Videos

Similar Questions

Explore conceptually related problems

The equation of a plane wave travelling along positive direction of x- axis is y = asin"(2pi)/(lambda)(vt-x) When the wave is reflected at a rigid surface and its amplitude becomes 80% , then find the equation of the reflected wave.

The equation of a plane progressive wave is y = 0.9 "sin"4 pi [t - ("x")/(2)] . When it is reflected at a rigid support , its amplitude becomes (2)/(3) of its previous value. The equation of the reflected wave is

The equation of a progressive wave is y = 0.8 sin 4pi [t - (x)/(5)] When it is reflected at a rigid support its amplitude becomes ((3)/(4)) of its previous value. The equation of the reflected wave is

A wave travelling along positive x -axis is given by y = A sin (omega t- kx) . If it is reflected from rigid boundary such that 80% amplitude is reflected, then equation of reflected wave is

The equation of a plane progressive wave is y=0.04sin4pi[t-(x)/(20)] . When it is reflected at a denser medium (medium with lesser wave velocity) at x=0, intensity of reflected wave is 81% of that of the incident wave. The equation of the relfected wave is:

When a wave is reflected at a rarer surface,the change in phase is

A travelling wave y=A sin (kx- omega t +theta ) passes from a heavier string to a lighter string. The reflected wave has amplitude 0.5A . The junction of the strings is at x=0 . The equation fo the refelcted wave is :

The equation of a transverse wave travelling along a string is y(xt)=0.3sin(200x-0.5t) what is the equation of the reflected wave when it is reflected by (i) A rigid boundary? (ii) A free end?

Equation of a plane progressive wave is given by y=0.6 sin 2pi(t-(x)/(2)). On reflection from a denser medium, its amplitude becomes 2//3 of the amplitude of the incident wave. The equation of the reflected wave is

TARGET PUBLICATION-WAVE MOTION -MCQ 7.1
  1. A prograssive wave of frequency 500 Hz is travelling with a speed of 3...

    Text Solution

    |

  2. If the speed of the wave shown in the figure is 330m//s in the given m...

    Text Solution

    |

  3. The equation of a wave is y=A sin (2pint) When it is reflected at a f...

    Text Solution

    |

  4. A bat flying above lake emits ultrasonic sound of 100 kHz ,When this w...

    Text Solution

    |

  5. Two waves are represented by y(1)= a sin (omega t + ( pi)/(6)) and y(...

    Text Solution

    |

  6. Two waves represented by the following equations are travelling in the...

    Text Solution

    |

  7. The superposition takes place between two waves of frequency f and amp...

    Text Solution

    |

  8. Waves from two different sources overlap near a particular point. The ...

    Text Solution

    |

  9. Consider ten identical sources of sound. All giving the same frequency...

    Text Solution

    |

  10. Equations of two progressive waves at a certain point in a medium are ...

    Text Solution

    |

  11. The amplitude of a wave represented by displacement equation y=(1)/(sq...

    Text Solution

    |

  12. If two waves x1 =A sin (omegat -0.1 x ) and x2 A sin (omegat -0.1x -p...

    Text Solution

    |

  13. The equations of two sound waves are given by, y1 = 3sin ( 100 pi t ) ...

    Text Solution

    |

  14. Two waves of same frequency have amplitudes 5 cm and 3 cm, These waves...

    Text Solution

    |

  15. If two interfering waves have intensities in the ratio 9: 1 ,then the ...

    Text Solution

    |

  16. The number of beats produced per second by two tuning forks when sound...

    Text Solution

    |

  17. Two tuning forks have frequencies 380 and 384 Hz respectively. When th...

    Text Solution

    |

  18. A set of 56 tuning forks is arranged in series of increasing frequenci...

    Text Solution

    |

  19. Each of a given set of 32 tunning forks arranged in a series of increa...

    Text Solution

    |

  20. Two vibrating tuning forks produce prograssive waves given by y1 = 4s...

    Text Solution

    |