Assignment:
A plane metal shield offers an absorption loss of 30 dB at a frequency of 10 kHz to normally incident radiated emission.
(a) Determine the absorption loss at 10 kHz in a shield of five times the thickness.
(b) Determine the absorption loss at 20 kHz in a shield of half the original thickness.
Provide complete and step by step solution for the question and show calculations and use formulas.