Choose the correct options for the following questions.
An LED can be made from:
Difficulty: Easy
A:
Silicon
B:
Gallium arsenide
C:
Gallium arsenide phosphide
D:
Both b and c
The diode used for the fast detection of light is:
Difficulty: Easy
A:
Light emitting diode
B:
Photodiode
C:
Photo voltaic cell
D:
Leclanche cell
A diode which can turn its current ON and OFF in nano seconds is called:
Difficulty: Easy
A:
LED
B:
Photodiode
C:
An ordinary diode
D:
Both a and b
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