Home
Class 12
PHYSICS
The electric field associated with an e....

The electric field associated with an e.m wave in vaccum is given by `vecE`= `hat i`40 cos`(kz-6xx10^8t)`, where E , z and t are in `volt//m`, meter and seconds respectively. The value of wave vector k is

A

0.5`m^-1`

B

6`m^-1`

C

3`m^-1`

D

2`m^-1`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • ELECTRONIC DEVICES

    SARAS PUBLICATION|Exercise EXAMPLE|31 Videos

  • MAGNETIC EFFECTS OF CURRENT AND MAGNETISM

    SARAS PUBLICATION|Exercise EXAMPLE|45 Videos

Similar Questions

Explore conceptually related problems

The electric field associated with a light wave is given by E= E_0 sin [(1.57xx 10^7 m^(-1)(x-ct)]. Find the stopping potential when this light is used in an experiment on photoelectric effect with a metal having work - function 1.9 eV.

The electric field of an electromagnetic wave travelling through vacuum is given by the equation E=E_(0) sin (k x - omega t) . The quantity that is independent of wavelength is

The displacement y of a wave travelling in the x direction is given by y=(2 xx 10^(-3)) sin(300t - 2x + pi/4) , where x and y are measured in metres and t in second. The speed of the wave is

The displacement y of a wave travelling in the x direction is given by y=(2 xx 10^(-3)) sin(600t - 2x + pi/3) , where x and y are measured in metres and t in second. The speed of the wave is

The equation of a wave is y = 0.1 sin (100 pi t - kx) where x , y are in metres and t in seconds . If the velocity of the wave is 100 m/s , then the value of k is

SARAS PUBLICATION-Electrostatics-EXAMPLE
  1. A square current carrying loop is suspended in a uniform magnetic fie...

    Text Solution

    |

  2. A charge Q is enclosed by a Gaussian spherical surface of doubled,the...

    Text Solution

    |

  3. In the Davisson and Germer experiment, the velocity of electrons emitt...

    Text Solution

    |

  4. Four point charges -Q,-q,2q and 2Q are placed , one at each corner of ...

    Text Solution

    |

  5. Monochromatic radiation emitted when electron on hydrogen atom jumps f...

    Text Solution

    |

  6. The electric field associated with an e.m wave in vaccum is given by v...

    Text Solution

    |

  7. What is the flux through a cube of inside a if a point charge of q is ...

    Text Solution

    |

  8. A, B and C are three points in a uniform electric field.The electric p...

    Text Solution

    |

  9. Arbar magnet of length and magnetic dipole moment M is bent in the for...

    Text Solution

    |

  10. A wire loop is rotated in a magnetic field. The frequency of change of...

    Text Solution

    |

  11. An electric dipole of dipole moment p is aligned parallel to a uniform...

    Text Solution

    |

  12. Two thin dielectric slabs of dielectric constants K1 and K2 (K1ltK2) a...

    Text Solution

    |

  13. A parallel plate air capacitor of capacitance Cis connected to a cell ...

    Text Solution

    |

  14. The electric field in certain region is acting radially outward and is...

    Text Solution

    |

  15. If potential( in volts) in a region is expressed as V(x,y,z)=6xy-y+2yz...

    Text Solution

    |

  16. Two idential charged spheres suspended from a common point by two mass...

    Text Solution

    |

  17. The magnetic susceptibility negative for

    Text Solution

    |

  18. A parallel-plate capacitor of area A,plate separation d and capacitanc...

    Text Solution

    |

  19. An electric dipole is placed at an angle of 30 with an electric field ...

    Text Solution

    |

  20. A capacitor is charged by a battery. The battery is removed and anothe...

    Text Solution

    |