Multiple choice

Match items in Group 1 with items in Group 2, most suitably ||| |---|---| | Group 1| Group 2| | P LED| 1 Heavy doping| | Q Avalanche photodiode| 2 Coherent radiation| | R Tunnel diode| 3 Spontaneous emission| | S LASER| 4 Current gain|

  1. P - 1, Q - 2, R - 4, S - 3

  2. P - 2, Q - 3, R - 1, S - 4

  3. P - 3, Q - 4, R - 1, S - 2

  4. P - 2, Q - 1, R - 4, S - 3
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

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