Question
Question: The intensity of a light pulse travelling along a communication channel decreases exponentially with...
The intensity of a light pulse travelling along a communication channel decreases exponentially with distance x according to the relation I = Ioe-ax , where I0 is the intensity at x = 0 and α is the attenuation constant. The percentage decrease in intensity after a distance of (αIn4)is
A
70%
B
75%
C
80%
D
85%
Answer
75%
Explanation
Solution
: 75%