Question: How is radiance measured? A. lumens B. watts C. armstrong D. hertz Answer» b. watts Note: The above multiple-choice question is for all general and Competitive Exams in India. 

Question: Of the following, _________ has the maximum frequency. A. uv rays B. gamma rays C. microwaves D. radio waves Answer» b. gamma rays Note: The above multiple-choice question is for all general and Competitive Exams in India. 

Question: Electromagnetic waves can be visualised as a A. sine wave B. cosine wave C. tangential wave D. none of the above Answer» a. sine wave Note: The above multiple-choice question is for all general and Competitive Exams in India.