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Match List I with list II and select the correct answer using the codes given below the lists :
List I
A. LED
B. LCD
C. Opto couplers
D. PhotodiodeList II
1. Electrical isolator
2. Forward biased
3. Light reflectors/transmitters
4. Reverse biased
b. A→2, B→1, C→3, D→4
c. A→4, B→3, C→1, D→2
d. A→2, B→3, C→1, D→4
asked in Electronics Paper-1, 2011
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