Electromagnetic spectrum
Electromagnetic spectrum is a Science & Technology concept from the MPSC syllabus, tested in 3 past MPSC questions (2016, 2021). Below are those real questions with their correct answers and explanations, plus the concepts worth being comfortable with first.
📅 Today's Daily Challenge
Five fresh MPSC questions, the same for everyone today — free, no signup.
Asked in
What you need to know first
What mastering this unlocks
Real questions that test this
अवरक्त प्रकाश किरणांची वारंवारिता ही जांभळ्या रंगाच्या प्रकाश किरणे पेक्षा ____________. Frequency of infrared light is ____________ than violet light.
Infrared light has longer wavelengths and lower frequency compared to violet light, which has the highest frequency in the visible spectrum.
विद्युतचुंबकीय लहरींची पुढीलपैकी कोणती उदाहरणे आहेत ? / Which of the following are examples of electromagnetic waves ?
(a)दूरदर्शन लहरी / Television waves
(b)अतिनील किरणे / Ultraviolet rays
(c)क्ष-किरणे / X-rays
(d)सूर्यप्रकाश किरणे / Sunlight rays
Television waves, ultraviolet rays, X-rays, and sunlight (visible and invisible spectrum) are all forms of electromagnetic waves differing only in frequency and wavelength.
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.