Asked: U.P.P.S.C. (R.I.) 2014medium Level
QUESTION STATEMENT:द्विभाषी / Bilingual
मानव आंख दृश्य प्रकाश के जिस तरंगदैर्घ्य के लिए सर्वाधिक सुग्राही होती है, वह है -
The wavelength of visible light for which the human eye is most sensitive is -
SELECT CORRECT OPTION:
A
6050 Å
B
5500 Å
Correct
C
4500 Å
D
7500 Å
Official Solution & Explanation:
Correct Answer: Option B(5500 Å)
मानव नेत्र दृश्य स्पेक्ट्रम के मध्यवर्ती पीले-हरे प्रकाश (तरंगदैर्ध्य लगभग 555 nm या 5550 Å, निकटतम विकल्प 5500 Å) के प्रति सर्वाधिक सुग्राही (Maximum sensitivity) होते हैं। दिन के उजाले (Photopic vision) में आंख की चरम संवेदनशीलता 555 nm पर होती है।
The human eye exhibits peak sensitivity in normal photopic (daylight) conditions to yellowish-green light at a wavelength of approximately 555 nm (5550 Å, represented here by 5500 Å).
Subject: General Science•Topic: Light / Optics•Subtopic: Light / Optics
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