दृश्य स्पेक्ट्रम की तरंग द – McqOptions

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1.	दृश्य स्पेक्ट्रम की तरंग दैर्ध्य क्या है?
A.	8500 - 9800 angstrom
B.	7800 - 8000 angstrom
C.	3900 - 7600 angstrom
D.	1300 - 3000 angstrom
Answer» B. 7800 - 8000 angstrom

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