RRB Technician Grade 3 previous year question
The extent of bending of light rays achieved by a lens is expressed in terms of its __________.
Asked in RRB Technician Grade 3 (06 Mar 2026 Shift 2) · Science
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Correct answer: (D) Power
The ability of a lens to bend (converge or diverge) light rays is expressed as its power, measured in dioptres, and is the reciprocal of its focal length.
हिंदी में प्रश्न
किसी लेंस द्वारा प्रकाश किरणों की बंकन सीमा को किसके पदों में व्यक्त किया जाता है?
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (D) शक्ति (Power)
लेंस की प्रकाश किरणों को मोड़ने (अभिसरित या अपसरित करने) की क्षमता को उसकी क्षमता (पावर) कहते हैं, जो डायोप्टर में मापी जाती है और फोकस दूरी का व्युत्क्रम होती है।
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