Warning: Use of undefined constant REQUEST_URI - assumed 'REQUEST_URI' (this will throw an Error in a future version of PHP) in /home/rajivsharma9/public_html/satchamp.in/wp-content/themes/Divi/functions.php on line 74
Question 43 - SAT CHAMP

Solution: Choice D is correct.

Since 1 nm = 10-9m
Therefore, 40 microns =(40) (10-6) / 10-9nm

= 40,000 nm