A photograph of a bacteria enlarged 50000 times attains a length of 5

1.	A photograph of a bacteria enlarged 50000 times attains a length of 5 cm. The actual length of bacteria is A. 1000 cm B. 10-3 cm C. 10-4 cm D. 10-2 cm
Answer» Let the actual length be x cm. When the bacteria is enlarged this much its length becomes 5 cm. Then, \(x\times50000=5.\) \(\therefore x=\frac{1}{1000}=\frac{1}{10^4}=10^{-4}\).

A photograph of a bacteria enlarged 50000 times attains a length of 5 cm. The actual length of bacteria is A. 1000 cm B. 10-3 cm C. 10-4 cm D. 10-2 cm

Answer»

Let the actual length be x cm. When the bacteria is enlarged this much its length becomes 5 cm.

Then, \(x\times50000=5.\)

\(\therefore x=\frac{1}{1000}=\frac{1}{10^4}=10^{-4}\).