MCQ Practice Question Antenna & Wave PropagationDirectivity & Gain A power gain of 10 corresponds to approximately? A3 dB B10 dB C20 dB D100 dB Show AnswerHide AnswerReport an error Correct Answer: B. 10 dB Explanation: Gain in decibels is 10log10(10)=10 dB.Reference: Standard antenna and wave propagation: directivity & gain