Home
Class 11
PHYSICS
The wave function (in S.I unit) for an e...

The wave function (in `S.I unit`) for an electromagnetic wave is given as- `psi(x,t)=10^(3)sinpi(3xx10^(6)x-9xx10^(14)t)`
The speed of the wave is

A

`4.5xx10^(14)Hz`

B

`3.5xx10^(14)Hz`

C

`3.0xx1^(10)Hz`

D

`2.5xx10^(10)Hz`

Text Solution

Verified by Experts

The correct Answer is:
A
`omega=9xx10^(14)xxpi`
`2pif=9pixx10^(14)`
`implies f=4.5xx10^(14)Hz`.
Promotional Banner

Topper's Solved these Questions

  • WAVES AND SOUND

    ERRORLESS|Exercise NCERT BASED QUESTIONS (INTERFERENCE AND SUPERPOSITION OF WAVES)|23 Videos

  • WAVES AND SOUND

    ERRORLESS|Exercise NCERT BASED QUESTIONS (BEATS)|18 Videos

  • WAVES AND SOUND

    ERRORLESS|Exercise ASSERTION & REASON |25 Videos

  • UNITS, DIMENSIONS AND MEASUREMENT

    ERRORLESS|Exercise ASSERTION & REASON |17 Videos

  • WORK, ENERGY POWER AND COLLISION

    ERRORLESS|Exercise ASSERTION & REASON |22 Videos

Similar Questions

Explore conceptually related problems

The wave function (in SI unit) for a light wave is given as Psi(x,t) = 10^(3) pi(3 xx 10^(6) x - 9 xx 10^(14)t) . The frequency of the wave is equal to

The magnetic field in the plane electromagnetic wave is given by B_(z)=2xx10^(-7) sin(0.5xx10^(3)x+1.5xx10^(11)t) tesla. The expression for electric field will be:

The magnetic field of an electromagnetic wave is given by 3 xx 10^(-7) sin (10^(3) x + 6.28 xx 10^(12)t ). The wave length of the electromagnetic wave is

The magnetic field in a plane electromagnetic wave is given by: By=12 xx 10^(-8) sin (1.20 xx 10^7z+3.60 xx 10^(15)t)T. Calculate the Speed. of the wave

The magnetic field in a plane electromagnetic wave is given by B_(y) = 2 xx 10^(-7) sin (0.5 xx 10^(3)x + 1.5 xx 10^(11) t) . This electromagnetic wave is

The Magnetic field in plane electromagnetic wave is given by B_(y)=4xx10^(-6)sin (0.2xx10^(4)x+0.6xx10^(12)t) T, then find (a)n Frequency (b) Wavelength (c) Speed of the wave (d) Expression for electric field part of electromagnetic wave

ERRORLESS-WAVES AND SOUND -NCERT BASED QUESTIONS (PROGRESSIVE WAVES)
  1. The stationary wavey = 2a sin kx cos omega t in a closed organ pipe is...

    Text Solution

    |

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

    Text Solution

    |

  3. A progressive wave travelling along the positive x-direction is repres...

    Text Solution

    |

  4. The wave function (in S.I unit) for an electromagnetic wave is given a...

    Text Solution

    |

  5. The wave described by y = 0.25 sin ( 10 pix -2pi nt ) where x and y ar...

    Text Solution

    |

  6. Which of the following is not true for the progressive wave y=4sin2...

    Text Solution

    |

  7. A plane progressive wave is represented by the equation y=0.1 sin (20...

    Text Solution

    |

  8. Given that y =A sin [( ( 2pi )/( lambda ) ( ct -x))] ,where y and x ...

    Text Solution

    |

  9. The equation of a simple harmonic wave is given by Y = 5sin""pi/2(100t...

    Text Solution

    |

  10. The equation of a wave is represented by y=10^-4sin[100t-(x)/(10)]. Th...

    Text Solution

    |

  11. The displacement of a string fixed at both the ends is given by y= 0...

    Text Solution

    |

  12. A particle moving along x-axis has acceleration f, at time t, given by...

    Text Solution

    |

  13. A wave travelling in positive X-direction with A=0.2m has a velocity o...

    Text Solution

    |

  14. A sound source of frequency 170 Hz is placed near a wall. A man walkin...

    Text Solution

    |

  15. A transverse wave is derscried by the equation y=y(0) sin 2 pi (ft - (...

    Text Solution

    |

  16. When a wave travels in a medium, the particle displacement is given by...

    Text Solution

    |

  17. The diagram below shows an instantaneous position of a string as a tra...

    Text Solution

    |

  18. लंबाई L के तार में m द्रव्यमान की एक छोटी वस्तु को बाँधकर एक सरल दोलक ...

    Text Solution

    |

  19. The equation of the progressive wave is y =a sin pi (nt -(x)/(5)) the ...

    Text Solution

    |

  20. The pressure wave, P=0.01 sin [1000 t-3x]Nm^(-2), corresponds to the...

    Text Solution

    |