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Question
In visible region, the blue light is having a wave length range of __________
Options:
A .  0.42-0.52 micrometer
B .  0.24-0.52 micrometer
C .  0.42-0.92 micrometer
D .  0.22-0.32 micrometer
Answer: Option A
Answer: (a).0.42-0.52 micrometer

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