Home
Class 12
PHYSICS
Which of the following diode emits red a...

Which of the following diode emits red and yellow light?

A

Ga-As

B

Ga-As-P

C

Ga-P

D

As-P

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • SEMICONDUCTORS

    TARGET PUBLICATION|Exercise Critical thinking|32 Videos

  • SEMICONDUCTORS

    TARGET PUBLICATION|Exercise Competitive thinking|110 Videos

  • ROTATIONAL MOTION

    TARGET PUBLICATION|Exercise MCQ|245 Videos

  • STATIONARY WAVES

    TARGET PUBLICATION|Exercise EVALUATION TEST|16 Videos

Similar Questions

Explore conceptually related problems

A beam of white light falling on a glass prism gets split into seven colours marked 1 to 7. Which of the following statements is correct regarding the propagation of light of different colours of white light in air? (i) Red light moves fastest (ii) Blue light moves faster than green light (iii) All the colours of the white light move with the same speed (iv) Yellow light moves with the mean speed as that of the red and the violet light.

Which one of the following statement is not correct in the case of light emitting diodes?

The Visible light has a wavelength range from about 380 run (violet) to 780 nm (red). lfan excited object emits light with wavelength of 15 nm, to which one of the following ranges does it belongs?

Whose fringe width will be more, the one for red light or the one for yellow light, all other things be the same ?

A diffraction pattern is obtained using a beam of red light. Which one among the following will be the outcome if the red light is replaced by blue light ?

If white means black, black means red, red means blue, blue means yellow and yellow means grey, then which of the following represents the colour of clear sky? 1) blue 2) red 3) yellow 4) Can’t be determined 5) None of these

TARGET PUBLICATION-SEMICONDUCTORS-Evaluation Test
  1. Which of the following diode emits red and yellow light?

    Text Solution

    |

  2. Which of the energy band diagrams shown in the figure corresponds to t...

    Text Solution

    |

  3. A zener-regulated power supply consists of a 9 V battery connected in ...

    Text Solution

    |

  4. The current gain of a transistor is 0.94. The change in collector curr...

    Text Solution

    |

  5. For a photodiode, the forbidden energy gap (Eg) of the material used i...

    Text Solution

    |

  6. If the two ends p and n of p-n junction diode are joined by a wire,

    Text Solution

    |

  7. Assertion : A transistor amplifier in common emitter configuration ha...

    Text Solution

    |

  8. Assertion : In a transistor the base is made thin. Reason: A thin b...

    Text Solution

    |

  9. Carbon, silicon and germanium have four valence electrons each. The mo...

    Text Solution

    |

  10. The input resistance of a CE amplifier is 400 Omega and the load resis...

    Text Solution

    |

  11. The number densities of electrons and holes in a pure germanium at roo...

    Text Solution

    |

  12. For a transistor amplifier, the voltage gain

    Text Solution

    |

  13. A common-emitter amplifier, has an input resistance of 500Omega and an...

    Text Solution

    |

  14. A p-n junction diode when forward biased has a drop of 0.4 V which is ...

    Text Solution

    |

  15. A transistor has alpha=0.96. If the emitter current is 8 mA, what are ...

    Text Solution

    |

  16. In an n-p-n transistor 10^(10) electrons enter the emitter in 10^(-6) ...

    Text Solution

    |

  17. A transistor is connected in common-emitter (CE) configuration.The col...

    Text Solution

    |

  18. The maximum wavelength which a photodiode can detect with Eg=0.74 eV i...

    Text Solution

    |