A cell phone is placed 40 cm in front of a converging lens with a focal length of magnitude 20 cm. How far is the image of this phone from the lens?

40 cm

Explanation:

Given that:

The cell phone is placed at a distance u = 40 cm

focal length f = +20 cm

image distance = v

from lens equation

1/u + 1/v = 1/f

1/40 + 1/v = 1/20

1/v = (1/20) - (1/40)

v = (20*40)/(40-20)

v = 40 cm

We can therefore conclude that: since we have a positive value for he image , the image is real and the image size is the same as the object.

depends on what you mean by "group." for order, it would be coleoptera (beetles). for class, it would be insecta (insects). for phylum, it would be the arthropoda (animals with jointed exoskeletons).

explanation: