Asked: 63rd B.P.S.C. (Pre) 2017medium Level
QUESTION STATEMENT:द्विभाषी / Bilingual
दृश्य स्पेक्ट्रम के तरंगदैर्घ्य की सीमा है -
The wavelength limits of the visible spectrum are -
SELECT CORRECT OPTION:
A
1300 Å - 3900 Å
B
3900 Å - 7600 Å
Correct
C
7800 Å - 8200 Å
D
8500 Å - 9800 Å
E
उपर्युक्त में से कोई नहीं/उपर्युक्त में से एक से अधिक
None of the above / More than one of the above
Official Solution & Explanation:
Correct Answer: Option B(3900 Å - 7600 Å)
दृश्य स्पेक्ट्रम (Visible spectrum) की मान्य सीमा 3900 Å से 7600 Å (लगभग 390 nm से 760 nm) तक मानी जाती है। बैंगनी रंग की तरंगदैर्ध्य सबसे छोटी (~3900 Å) तथा लाल रंग की तरंगदैर्ध्य सबसे लंबी (~7600 Å) होती है।
The generally accepted limits of the visible light spectrum are 3900 Å to 7600 Å (approx. 390 nm to 760 nm), ranging from violet at the shortest end to red at the longest end.
Subject: General Science•Topic: Light / Optics•Subtopic: Light / Optics
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