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Question
What is the wavelength for visible light?
Options:
A .  3.9 * 10¯¹ to 7.8 * 10¯¹ micron meter
B .  4.9 * 10¯¹ to 7.8 * 10¯¹ micron meter
C .  5.9 * 10¯¹ to 7.8 * 10¯¹ micron meter
D .  6.9 * 10¯¹ to 7.8 * 10¯¹ micron meter
Answer: Option A
Answer: (a).3.9 * 10¯¹ to 7.8 * 10¯¹ micron meter

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