Question

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

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

Answer 1

Answer: (D)

$1$ micron $=10^{-6}m$
$\because 10^{-6}m$ space is occupied by $1$ bacteria.
$\therefore 1m$ space will be occupied by
$10^6$ bacteria $=1$ million bacteria