Answer:
D.
Explanation:
Red light has wavelengths around 620 to 750 nm.
Answer:
Capacitive reactance of the capacitor is 68 ohms
Explanation:
It is given that,
Capacitance, 
Frequency, 
Capacitive reactance is given by :



or

So, the capacitive reactance of the capacitor is 68 ohms. Hence, this is the required solution.
The Answer is Option C
I think...
Sorry If i am wrong...
Answer:
I believe it's the first option