Answers

2015-09-04T20:12:16+05:30
wavelength = 1~ 600 nano meter
        = 6* 10² * 10-⁹ meter
        = 6* 10-⁷ meter
( 1 nano meter = 10-⁹ meter)

so, 
     frequency = speed of light / wavelength 
                    = 3 * 10⁸ m/s / 6 * 10-⁷ m
                    = 0.5 * 10¹⁵ Hz.
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2015-09-05T17:36:54+05:30

0.5 X 10¹⁵ Hz.
SO THANKS PLZZZZZZZZZZZZZZZZZZ

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