Home
Class 12
PHYSICS
If the incident wavelength on a photodi...

If the incident wavelength on a photodiode is 1700 nm, what is its energy gap `(E_(g))` ?

A

0.073 eV

B

1.20 eV

C

0.73 eV

D

1.16 eV

Text Solution

Verified by Experts

The correct Answer is:
C

0.73 eV
`E_(g)=(hc)/(lambda)`
`=(6.62xx10^(-34)xx3xx10^(8))/(17xx10^(-7)xx1.6xx10^(-19))=0.73014~~0.73eV`
Promotional Banner

Topper's Solved these Questions

  • SEMICONDUCTOR ELECTRONICS : MATERIALS, DEVICES AND SIMPLE CIRCUITS

    KUMAR PRAKASHAN|Exercise Section-D : Multiple Choice Questions (MCQs) (MCQs asked in Competitive Exams)|129 Videos
  • SEMICONDUCTOR ELECTRONICS : MATERIALS, DEVICES AND SIMPLE CIRCUITS

    KUMAR PRAKASHAN|Exercise Section-C: NCERT Exemplar Solution (Long Answer Type Questions)|10 Videos
  • SAMPLE QUESTION PAPER

    KUMAR PRAKASHAN|Exercise PART-B SECTION-C|5 Videos
  • WAVE OPTICS

    KUMAR PRAKASHAN|Exercise SECTION-D (MULTIPLCE CHOICE QUESTIONS (MCQS)) (MCQS FROM DARPAN BASED ON TEXTBOOK)|239 Videos

Similar Questions

Explore conceptually related problems

A 100 W sodium lamp radiates energy uniformly in all directions .The lamp located at the centre of a large sphere the absorbs all the sodium light which is incident on it.The wavelength of the sodium light 589 nm.(a) what is the energy per photo assosciated with the sodium light? (b)At what rate are the photons delivered to the sphere.

A 100W sodium lamp radiates energy uniformly in all directions. The lamp is located at the centre of a large sphere that absorbs all the sodium light which is incident on it. The wavelength of the sodium light is 589 nm. (a) What is the energy per photon associated with the sodium light? (b) At what rate are the photons delivered to the sphere?

The electrical conductivity of a semiconductor of a semiconductor increases when electromagnetic radiation of wavelength shorter than 2480 nm, is incident on it. The band gap in (eV) for the semi conductor is ……

The potential energy of the orbital electron in the ground state of hydrogen atom is -E What is its kinetic energy ?-

What is called as quantum of energy ?What is its energy?

The photons from the Balmer series in Hydrogen spectrum having wavelength between 450 nm to 700 nm are incident on a metal surface of work function 2 eV Find the maximum kinetic energy of ejected electron (Given hc = 1242 eV nm)

The follwing diagram indicates the energy levels of a certain atom when the system moves from 2E level to E , a photon of wavelength lambda is emitted. The wavelength of photon produced during its transition from (4E)/(3) level to E is

KUMAR PRAKASHAN-SEMICONDUCTOR ELECTRONICS : MATERIALS, DEVICES AND SIMPLE CIRCUITS -Section-D : Multiple Choice Questions (MCQs) (MCQs From .DARPAN. Based On Textbook)
  1. Finger shape anode is used in ………

    Text Solution

    |

  2. At breakdown voltage the reverse current of p-n junction can be ranked...

    Text Solution

    |

  3. If the incident wavelength on a photodiode is 1700 nm, what is its en...

    Text Solution

    |

  4. Giving 2V to LED passes a 10 mA current. If you want to connect this d...

    Text Solution

    |

  5. If the maximum load voltage of 40 V is to be obtained from the bridge ...

    Text Solution

    |

  6. When we use zener diode as a voltage regulator, its connection ……. (...

    Text Solution

    |

  7. The heat produced per unit time, on passing electric current through a...

    Text Solution

    |

  8. To get light in visible region through LED …….. Semiconductor is used.

    Text Solution

    |

  9. Forward bias has to be provided for the ….. Semiconductor device to wo...

    Text Solution

    |

  10. In the circuit shown in figure, if the diode forward voltage drop is 0...

    Text Solution

    |

  11. What is the difference between cutaneous and pulmonary respiration ?

    Text Solution

    |

  12. The circuit symbol of LED, p-n junction diode is …..

    Text Solution

    |

  13. Which of the following is true ?

    Text Solution

    |

  14. Which of the following in true for Golden rice ?

    Text Solution

    |

  15. Truth table for the given circuit (See figure) is

    Text Solution

    |

  16. Which of the following in true for Golden rice ?

    Text Solution

    |

  17. Which gate does not require a p-n junction diode?

    Text Solution

    |

  18. NAND gate is combination of ….. gate and …….. gate.

    Text Solution

    |

  19. NOR gate is the combination of ….. Gate and …… gate.

    Text Solution

    |

  20. ….. NAND gate is required for OR gate.

    Text Solution

    |