Question

a photograph of a bacteria enlarged 50000 times attains a length of 5cm . what is the actual length of bacteria ? if photograh is enlarged 20000 times only, what would be its enlarged length?

Answer 1

we will use the unitary method

If 50000x magnification gives bacteria of length 5cm

:. 1x magnification (normal view) will give
5/50000=1/10000=0.0001 cm

If the magnification was 20000x only then the enlarged length would be 20000×0.0001=2×1=2cm

Answer 2

50,000 times----------------->5 cm

1 time----------------------------->5/50,000=1/10,000(ACTUAL LENGTH)

20,000 times------------------>20,000/10,000

                                          =2 cm

HOPE THIS HELPS!!!!!!!!!