Home
Class 11
PHYSICS
Assertion:- Optical communication system...

Assertion:- Optical communication system is more economical than other system of communications.
Reason:- The information carrying capacity of a communication system is directly proportional to its bandwidth.

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

In communication system and RADAR microwave are used, because …….

Assertion: Microwave communication is preferred to optical communication Reason: Microwaves provide large number of channels and bandwidths as compared to optical signals.

Assertion: The specific heat of a gas in an adiabatic process is zero and in an isothermal process is infinite. Reason: Specific heat of a gas is directly proportional to the heat in system and inversely proportional to change in temperature.

Assertion:- If at t=0, centre of mass of an isolated system is at (0,1,2) than at t=2h,25 min, its centre of mass may be (0,1,2). Reason:- For a isolated system, velocity of the centre of mass is constant.

The human ciculatory system can be thought of as a closed system of interconnecting pipes through which fluid is continuously circulated by two pumps the two pumps the right and left verticles of the heart, work as simple two-stroke force pumps. The muscles of the heart regulate the force by contracting and relaxing. the contraction (systole) lasts about 0.2s and a complete systole/diastole (contraction/relaxation) cycle lasts about 0.8s. For flood pressures and speeds in the normal range. the volume flow rate of blood through a blood vessel is directly proportional tot he pressure difference over a length of the vessel and to the fourth power of the radius of the vessel. The total mechanical energy per unit volume of blood just as it leaves the heart is E//V=rhogh+P+rhov^(2) Q. Why is diastolic blood pressure muchh lower than systolic pressure?

The communication between the peripheral nervous system and the other parts of the body is facilitated by the central nervous system.True or False

Assertion:- In two particle system when viewed from center of mass reference frame, if one particle slops then other one will also stop simultaneously, irrespective of external forces acting on system. Reason:- Centre of mass of a system is a point about which total momentum of system is always constant and non-zero.

Assertion: The heat supplied to a system is always equal to the increase in its internal energy. Reason: When a system changes from one thermal equilibrium to another some heat is absorbed by it.

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

    |