AP Police SI practice question
If the power of a lens is +1 Dioptre, then the focal length of the lens will be:
From a AP Police SI Science practice set · Science
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Correct answer: (D) 1 m
Focal length f = 1/P = 1/1 = 1 m. Since the lens has positive power, it is convex and f = +1 m.
हिंदी में प्रश्न
______ संकटापन्न भारतीय औषधीय पादप की प्रजाती है I A. नापेनडैनथेस B. पोडोफाइलम C. अफीम D. बेसिल
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सही उत्तर: (D) 1 m
फोकस दूरी f = 1/P = 1/1 = 1 मीटर। चूंकि लेंस की क्षमता धनात्मक है, यह उत्तल लेंस है और f = +1 मीटर है।
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