Microwaves
Microwaves is a Science & Technology concept from the MPSC syllabus, tested in 2 past MPSC questions (2014, 2016). Below are those real questions with their correct answers and explanations.
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Real questions that test this
रेडिओ तरंगाचा वेग हा ________ असतो. The velocity of radio waves is ________
Radio waves are electromagnetic waves. All electromagnetic waves travel through a vacuum at the speed of light (approximately 3 × 10⁸ m/s).
पुढील दोन विधानांपैकी कोणते योग्य आहे ? अ. अतिनील किरणे किरकोळ गाठींवर उपयुक्त ठरतात. ब. अवरक्त किरणे रासायनिक द्रव्यांचे पृथक्करण करतात. Which one of the following two statements is correct ? a. Ultraviolet rays help in diagnosis of small tumours. b. Infrared rays help in analysis of chemical compounds.
(a)अतिनील किरणे किरकोळ गाठींवर उपयुक्त ठरतात. / Ultraviolet rays help in diagnosis of small tumours.
(b)अवरक्त किरणे रासायनिक द्रव्यांचे पृथक्करण करतात. / Infrared rays help in analysis of chemical compounds.
Ultraviolet rays are not used for diagnosing small tumours (X-rays, gamma rays or MRI are used), and infrared rays are used for studying molecular structure and thermal imaging rather than general chemical compound separation.