1. Phonometer is used to measure which one of the following? The power of brightness oflight Extremely high temperature Frequency of electromagnetic wave Atmospheric humidityAnswer is Right!Answer is Wrong! Subscribe on YouTube measure which one of the Join Our Telegram Channel following?" class="read-more button" href="https://exam.pscnotes.com/mcq/phonometer-is-used-to-measure-which-one-of-the-following/#more-1474">Detailed SolutionPhonometer is used to measure which one of the following?