Doubts
Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents
Sign in to save progress →
Doubts
Sign in

Electronic Devices question

2021 · 26 Feb · Shift 1 · Q48
Guest · try one question or challengeGuest · try one question or challenge
  1. PYQ Library
  2. /JEE Main
  3. /Physics
  4. /Electronic Devices
  5. /2021 · 26 Feb · Shift 1 · Q48

Electronic Devices question

2021 · 26 Feb · Shift 1 · Q48

JEE MainPhysicsElectronic DevicesMCQ+4 / −1
LED is constructed from Ga-As-P semiconducting material. The energy gap of this LED is 1.9 eV. Calculate the wavelength of light emitted and its colour. [h = 6.63 ×\times× 10 −-− 34 Js and c = 3 ×\times× 108 ms −-− 1]
  1. A
    654 nm and orange colour
  2. B
    654 nm and red colour
  3. C
    1046 nm and red colour
  4. D
    1046 nm and blue colour
PreviousNext

More from Electronic Devices

  • The circuit contains two diodes each with a forward resistance of 50 Ω and with infinite reverse resistance. If the battery voltage is 6V, the current through the 120 Ω resistance is ​ mA. Includes diagram2021 · Numerical
  • Draw the output signal Y in the given combination of gates. Includes diagram2021 · MCQ
  • The zener diode has a Vz = 30V. The current passing through the diode for the following circuit is ​ mA. Includes diagram2021 · Numerical
  • A zener diode of power rating 2W is to be used as a voltage regulator. If the zener diode has a breakdown of 10 V and it has to regulate voltage fluctuated between 6 V and 14 V, the value of Rs for safe operation should be ​Ω… Includes diagram2021 · Numerical
  • Find the truth table for the function Y of A and B represented in the following figure. Includes diagram2021 · MCQ
  • In the following logic circuit the sequence of the inputs A, B are (0, 0), (0, 1), (1, 0) and (1, 1). The output Y for this sequence will be : Includes diagram2021 · MCQ
  • Choose the correct waveform that can represent the voltage across R of the following circuit, assuming the diode is ideal one : Includes diagram2021 · MCQ
  • If VA and VB are the input voltages (either 5V or 0V) and V0 is the output voltage then the two gates represented in the following circuit (A) and (B) are :- Includes diagram2021 · MCQ