Home
Class 11
PHYSICS
Statement-I : For the same antenna lengt...

Statement-I : For the same antenna length, power radiated by short wavelength signals would be large.
Statement-II : Because power radiated `prop (1)/(lamda^(2))`

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:
A
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

Statement-1 : Among the particles of same kinetic energy, lighter particle has greater de brogile wavelength. and Statement-2 : The de-Brogile wavelength of a particle depends only on the charge of the particle.

Statement-I: If an aqueous solution of NaCI is electrolysed, the product obtained at the cathode is H_(2) gas and no Na. Because Statement-II: Gases are liberated faster than the metals.

Statement-I : Sun glasses have zero power even through their surfaces are curved. and Statement-II: Both surface of the sun glasses are curved in the same direction with same radii.

Statement-1 : The frequency of K_(alpha) X-radiation is greater than K_(beta) for a given target material. and Statement-2 : K_(alpha) radiation is produced when an electron from n = 2 jumps into the vacancy in n = 1 orbit, whereas in K_(beta) radiation the transition takes place from n = 2 to n = 1 .

Statement-1: if white light is used in YDSE, then the central bright fringe will be white. Statement-2: In case of white light used in YDSE all the wavelengths produce their zero order maxima at the same position.

This question has statement -I and statement - II of the four choices given after the statements , choose the one that best describes the two statements . Statement - I : A point particle of mass m moving with speed v collides with stationary point particle of mass M . If the maximum energy loss possible is given as f(1/2 mv^(2)) " then" F = (m/(M+m)) Statement -II : Maximum energy loss occurs when the particles get stuck together as a result of the collision .

Statement-1 If the accelerating potential in an X-ray tube is increased, the wavelength of the characterstic X-rays do not change. because Statement-2 When an electron beam strikes the target in an X-ray tube, part of the kinetic energy is converted into X-ray energy.

A black body emits radiation at the rate P when its temperature is T. At this temperature the wavelength at which the radiation has maximum intensity is lamda_0 , If at another temperature T' the power radiated is P' and wavelength at maximum intensity is (lamda_0)/(2) then

Let f(x) = {{:(Ax - B,x le -1),(2x^(2) + 3Ax + B,x in (-1, 1]),(4,x gt 1):} Statement I f(x) is continuous at all x if A = (3)/(4), B = - (1)/(4) . Because Statement II Polynomial function is always continuous. (a)Statement I is correct, Statement II is also correct, Statement II is the correct explanation of Statement I (b)Statement I is correct, Statement II is also correct, Statement II is not the correct explanation of Statement I

Statement-1 : In a photoelectric effect experiment different photoelectron have different kinetic energy. and Statement-2 : In the incident radiation different photons must have different energy.

ALLEN -SEMICONDUCTORS-Part-3(Exercise-3)
  1. Assertion: The television broadcasting becomes weaker with increasing ...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  18. Statemet-1: the electrical conductivity of earth's atmosphere increase...

    Text Solution

    |

  19. Assertion:- Optical communication system is more economical than other...

    Text Solution

    |

  20. Statement-I : A communication satellite is essentially a repeater in s...

    Text Solution

    |