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

The electric field associated with an electromagnetic wave in vacuum is given by `vecE=40cos(kz-6xx10^(8)t)hati,`
where E, z and t are in volt per meter, meter and second respectively. The value of wave vector k is

A

`6 m^(-1)`

B

`3 m^(-1)`

C

`2 m^(-1)`

D

`0.5 m^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC WAVES

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT SECTION - D Assertion-Reason Type Questions|25 Videos

  • ELECTROMAGNETIC WAVES

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT SECTION - B Objective Type Questions|10 Videos

  • ELECTROMAGNETIC INDUCTION

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT(SECTION -D) Assertion-Reason type Question)|15 Videos

  • ELECTROSTATIC POTENTIAL AND CAPACITANCE

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT SECTION - D|9 Videos

Similar Questions

Explore conceptually related problems

The electric field of an electromagnetic wave in free spaces is given by barE=5 cos(10^5t+kx)jat k V/m , where t in second and x in metre then

The electric field on an electromagnetic wave in free space is given by E=10 cos (10^7t+kx) hatj V//m , Where t and x are in seconds and metres respectively. It can be inferred that (1) the wavelength lambda is 188.4m . (2) the wave number k is 0.33rad//m (3) the wave amplitude is 10V//m (4) the wave is propagating along +x direction. which one of the following pairs of statement is correct?

The electric field of a plane electromagnetic wave is given by vecE=E_(0)(hatx+haty)sin(kz-omegat) Its magnetic field will be given by :

The electric field of a plane electromagnetic wave is given by vec(E)=E_0haticos(kz)cos(omegat) The corresponding magnetic field vec(B) is then given by :

If the magnetic field in a plane electro-magnetic wave is given by vecB=3xx10^(-8) sin (1.6 xx 10^(3) x + 48 xx 10^(10)t)hatjT, then average intensity of the beam is:

If the magnetic field in a plane electro-magnetic wave is given by vecB=3xx10^(-8) sin (1.6 xx 10^(3) x + 48 xx 10^(10)t)hatjT, then average intensity of the beam is:

The electric field part of an electromagnetic wave in vacuum is E=3.1(N)/(C)cos[(1.8("rad")/("m"))y+(5.4xx10^(8)("rad")/(s))t]hati The wavelength of this part of electromagnetic wave is

The electric vector vibration of an electromagnetic wave is given by E = (50NC^(-1)) sin omega(t-(x)/(c)) , The intensity of the wave is

The magnetic field of an electromagnetic wave is given by: oversetB=1.6xx10^(-6)cos(2xx10^(7)z+6xx10^(15)t)(2hati+hatj)(Wb)/m^(2) The associated electric field will be:

The electric field portion of an electromagnetic wave is given by ( all variables in SI units) E=10^(-4) sin (6xx10^(5)t -0.01x) The. Frequency (f) and the speed (v) of electromagnetic wave are

AAKASH INSTITUTE ENGLISH-ELECTROMAGNETIC WAVES-ASSIGNMENT SECTION - C Previous Years Questions
  1. Out of the following options which one one can be used to produce a p...

    Text Solution

    |

  2. The energy of the EM waves is of the order of 15keV. To which of the s...

    Text Solution

    |

  3. A radiation of energy E falls normally on a perfectly reflecting surfa...

    Text Solution

    |

  4. Light with an energy flux of 25xx10^(4)Wm^(-2)falls on a perfectly ref...

    Text Solution

    |

  5. The condition under which a microwave oven heats up a food item conta...

    Text Solution

    |

  6. The electric field associated with an electromagnetic wave in vacuum i...

    Text Solution

    |

  7. The ratio of amplitude of magnetic field to the amplitude of electric ...

    Text Solution

    |

  8. The electric and the magnetic field, associated with an electromagneti...

    Text Solution

    |

  9. The decreasing order of wavelength of infrared, microwave, ultraviolet...

    Text Solution

    |

  10. Which of the following statement is false for the properties of electr...

    Text Solution

    |

  11. The electric field of an electromagnetic wave in free space is given b...

    Text Solution

    |

  12. The electric field part of an electromagnetic wave in a medium is repr...

    Text Solution

    |

  13. The velocity of electromagnetic radiation in a medium of permittivity ...

    Text Solution

    |

  14. The electric and magnetic field of an electromagnetic wave are:-

    Text Solution

    |

  15. If lambda(v) , lambda(x) and lambda(m) represent the wavelength of v...

    Text Solution

    |

  16. The velocity of electromagnetic radiation in a medium of permittivity ...

    Text Solution

    |

  17. Which of the following electromagnetic waves has smallest wavelength?

    Text Solution

    |

  18. If epsilon(0) and mu(0) are, respectively, the electric permittivity a...

    Text Solution

    |

  19. Greenhouse Effect

    Text Solution

    |

  20. The velocity of electromagnetic wave is along the direction of

    Text Solution

    |