Home
Class 12
PHYSICS
An electromagnetic wave is travelling in...

An electromagnetic wave is travelling in x-direction with electric field vector given by, `vecE_y = E_A sin(kx= omega t) J` . The correct expression for magnetic field vector is .

A

`vecB_(y) = (E_(0))/(C) sin(kx - omegat)hatj`

B

`vecB_(y) = E_(0)C sin(kx - omegat)hatj`

C

`vecB_(z) = (E_(0))/(C) sin(kx - omegat)hatk`

D

`vecB_(z) = E_(0)C sin(kx - omegat)hatk`

Text Solution

Verified by Experts

The correct Answer is:
C
(c): `(E_(0))/(B_(0)) = rArr B_(0) = (E_(0))/C`
The direction of magnetic field must be towards z-axis.
Promotional Banner

Topper's Solved these Questions

  • KARNATAKA CET 2018

    KCET PREVIOUS YEAR PAPERS|Exercise PHYSICS|60 Videos

  • MODEL TEST PAPER - 1

    KCET PREVIOUS YEAR PAPERS|Exercise PHYSICS|60 Videos

Similar Questions

Explore conceptually related problems

Electromagnetic wave consists of periodically oscillating electric and magnetic vectors

A plane electromagnetic wave of frequency 20 MHz travels through a space along x direction. If the electric field vector at a certain point in space is 6 V m^(-1) , what is the magnetic field vector at that point ?

What are the directions of electric and magnetic field vectors relative to each other and relative to the direction of propagation of electromagnetic waves?

A plane electromagnetic wave travels in vacuum along z-direction. What can you say about the directions of its electric and magnetic field vectors? If the frequency of the wave is 30 MHz, what is its wavelength?

An electromagnetic wave in vacuum has the electric and magnetic field vec E and vec B which are always perpendicular to each other. The direction of polarisation is given by vec X and that of wave propagation by vec k then

Statement 1 : The energy in an electromagnetic waves is divided equally between the electric and magnetic fields. Statement 2 : Energy density of electric field as well as magnetic field is given by one relation only i.e. U_E = 1/2 in_0E^2 .

KCET PREVIOUS YEAR PAPERS-KARNATAKA CET 2019-PHYSICS
  1. In a cyclotron a charged particle

    Text Solution

    |

  2. The number of turns in a coil of Galvanometer is tripled, then

    Text Solution

    |

  3. A circular current loop of magnetic moment M is in an arbitrary orient...

    Text Solution

    |

  4. In a permanent magnet at room temperature

    Text Solution

    |

  5. Coercivity of a magnet where the ferromagnet gets completely demagneti...

    Text Solution

    |

  6. An inductor of inductance L and resistor R are joined together in seri...

    Text Solution

    |

  7. An electromagnetic wave is travelling in x-direction with electric fie...

    Text Solution

    |

  8. The phenomenon involved in the reflection of radio-waves by ionosphere...

    Text Solution

    |

  9. A point object is moving uniformly towards the pole of a concave mirro...

    Text Solution

    |

  10. A certain prism is found to produce a minimum deviation of 38° It prod...

    Text Solution

    |

  11. In the given circuit, the current in the circuit is

    Text Solution

    |

  12. Kirchhoff.s junction rule is a reflection of

    Text Solution

    |

  13. The variation of terminal potential difference (V) with current flowin...

    Text Solution

    |

  14. In a potentiometer experiment, the balancing point with a cell is at a...

    Text Solution

    |

  15. The magnetic field at the centre 'O' in the given figure is

    Text Solution

    |

  16. An aluminium sphere is dipped into water. Which of the following is t...

    Text Solution

    |

  17. A thermodynamic system undergoes a cyclic process ABC as shown in the ...

    Text Solution

    |

  18. One mole of O2 gas is heated at constant pressure starting at 27^@C. H...

    Text Solution

    |

  19. A piston is performing S.H.M. in the vertical direction with a frequen...

    Text Solution

    |

  20. The equation of a stationary wave is y = 2 sin ((pi x)/(15)) cos ( 48...

    Text Solution

    |