Answer:
V = λ f (wavelength * frequency)
λ = V / f = 343 m/s / 262 / s = 1.3 m
The answer is 800 J
(the second answer).
Answer:
Explanation:
From the given information, the LED is operating with a given wavelength of 850 nm or 0.85 μm.
Hence, the material dispersion is
Now, using the pulse spread formula:
Thus, the pulse spreading as a result of material dispersion is: