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Special Diodes – 35

35. Match the items in Group I with items in Group II most suitably
Group I                                                 Group II
(P) LED                                            (1) Heavily doped
(Q) Avalanche photo diode          (2) Coherent radiation
(R) Tunnel diode                            (3) Spontaneous emission
(S) LASER                                        (4) Current gain

(a) P-2, Q-1, R-3, S-4
(b) P-4, Q-3, R-2, S-1
(c) P-3, Q-4, R-1, S-2
(d) P-3, Q-2, R-1, S-4

Answer : (c)

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