Question

If the size of bacteria is 1 micron, what will be the number of it in 1 m length?

• A. One hundred
• B. One crore
• C. One thousand
• D. One million

Answer 1

Answer: (D)

One million

Answer 2

1 micron = $10^{- 6}m$

$\because 10^{- 6}m$space is occupied by 1 bacteria

$\therefore$1 m space will be occupied by $10^{- 6}m$ bacteria

$10^{6}$bacteria =1 million bacteria