RRB Group D practice question
The colour of scattered light depends on the size of the scattering particles. Very fine particles scatter mainly which colour of light?
From a RRB Group D Science practice set · Science
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Correct answer: (A) Blue light
By Rayleigh scattering law, smaller particles scatter shorter wavelengths (blue light) more strongly than longer wavelengths, so very fine particles scatter mainly blue light.
हिंदी में प्रश्न
किसी सामग्री के अपवर्तक सूचकांक को विभिन्न मीडिया में प्रकाश के _____के सापेक्ष प्रसार के साथ जोड़ा जा सकता है।
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (A) चाल
रैले प्रकीर्णन नियम के अनुसार, छोटे कण लंबी तरंगदैर्ध्य की तुलना में छोटी तरंगदैर्ध्य (नीले प्रकाश) का प्रकीर्णन अधिक करते हैं, इसलिए अत्यंत बारीक कण मुख्यतः नीले प्रकाश का प्रकीर्णन करते हैं।
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