Home
Class 11
PHYSICS
Assertion: The surface wave propagation ...

Assertion: The surface wave propagation is used for medium wave band and for television broadcasting.
Reason: The surface waves travel directly from transmitting antenna to receiver antenna through atmosphere.

A

Statetment-I is True, Statement-II is True , Statement-II is a correct explanation for Statement-I

B

Statement-I is True, Statement-II is True , Statement-II is NOT a correct explanation for Statement-I

C

Statement-I is True, Statement-II is False

D

Statement-I is False, Statement-II is True

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • SEMICONDUCTORS

    ALLEN |Exercise Part-3(Exercise-4)|50 Videos

  • SEMICONDUCTORS

    ALLEN |Exercise Part-3(Exercise-2)|49 Videos

  • PHYSICAL WORLD, UNITS AND DIMENSIONS & ERRORS IN MEASUREMENT

    ALLEN |Exercise EXERCISE-IV|7 Videos

  • WAVES AND OSCILLATIONS

    ALLEN |Exercise Part-1(Exercise-05)[B]|42 Videos

Similar Questions

Explore conceptually related problems

Assertion: The television broadcasting becomes weaker with increasing distance. Reason: The power transmitted from T.V. transmitter varies inversely as the distance of the receiver.

Long distance radio broadcasts use short - wave bands. Why ?

Assertion: The Microwave propagation is better than the sky wave propagation. Reason: Microwaves have frequency 100 to 3001 GHz, which have very good directional properties.

Assertion : When a wave changes médium of propagation, its frequency remains constant but its wavelength changes. Reason: Frequency is a property of source whereas wavelength is a property of medium.

With propagation of longitudinal waves through a medium, the quantity transmitted is

Assertion : Progressive and transverse waves can not be produced in liquid or gas. Reason: Light wave is progressive (travelling).

Assertion (A) : The phase difference between any two points on a wave front is zero Reason (R ) : Light from the source reaches every point of the wave front at the same time

Assertion: The electromagnetic waves of shorter wavelength can travel longer distances on earth's surface thane those of longer of longer wavelengths. Reason: Shorter the wavelength, the larger is the velocity of wave propagation. Also, shorter the wavelength, shorter is the velocity of wave propagation.

Assertion : In radiation, heat transfers in form of electromagnetic waves. Reason : For electromagnetic waves medium is not required.

Let us list some of the factors, which could possibly influence the speed of wave propagation: (i) nature of the source. (ii) direction of propagation. (iii) motion of the source and/or observer. (iv) wavelength. (v) intensity of the wave. On which of these factors, if any, does (a) the speed of light in vacuum, (b) the speed of light in a medium (say, glass or water), depend?

ALLEN -SEMICONDUCTORS-Part-3(Exercise-3)
  1. Assertion : In optical fibre, the diameter of the core is kept small. ...

    Text Solution

    |

  2. Assertion: The electromagnetic waves of shorter wavelength can travel ...

    Text Solution

    |

  3. Assertion: The surface wave propagation is used for medium wave band a...

    Text Solution

    |

  4. Assertion: The television broadcasting becomes weaker with increasing ...

    Text Solution

    |

  5. Assertion: The Microwave propagation is better than the sky wave propa...

    Text Solution

    |

  6. Statement-I : Semiconductors do not obey Ohm's law Statement-II : El...

    Text Solution

    |

  7. Statement-I : Germanium is preferred over silicon for making semicondu...

    Text Solution

    |

  8. Assertion : p-n junction diode can be used even at ultra high frequenc...

    Text Solution

    |

  9. Statement-I : A p-n junction with reverse bias can be used as a photod...

    Text Solution

    |

  10. Assertion: NAND or NOR gates are called digital building blocks. Rea...

    Text Solution

    |

  11. Assertion: Two P-N junction diodes placed back to back, will work as a...

    Text Solution

    |

  12. Statement-I : When base region has larger width, the collector current...

    Text Solution

    |

  13. Statement-I : For faster action, n-p-n transistor is used Statement-...

    Text Solution

    |

  14. Statement-I : To be used as amplifier, the transistor in the common em...

    Text Solution

    |

  15. Statement-I : Many channels get allowed when transmission frequency is...

    Text Solution

    |

  16. Statement-I : Optical fibres are free from electromagnetic disturbance...

    Text Solution

    |

  17. Statement-I : Diode lasers are used as optical sources in optical comm...

    Text Solution

    |

  18. Statement-I : Electromagnetic waves with frequencies smaller than the ...

    Text Solution

    |

  19. Statement-I : In optical fibre, the diameter of the core is kept small...

    Text Solution

    |

  20. Statement-I : For the same antenna length, power radiated by short wav...

    Text Solution

    |