In light emitting diode, the available light emitting region is ?
A. Less than 2.5 mm
B. From 2.5 to 25 mm
C. Greater than 25 mm
D. Greater than 50 mm
Answer:B
In light emitting diode, the available light emitting region is ?
A. Less than 2.5 mm B. From 2.5 to 25 mm C. Greater than 25 mm D. Greater than 50 mm