A9.0 cm object is 3.0 cm from a lens, which has a focal length of –12.0 cm. what is the distance of the image from the lens? what is the height of the image? what type of lens created this image?

Answer :

Image distance = -2.4 cm

Height of image = 7.2 cm

Concave lens

Explanation :

Given that,

Height of the object, h = 9 cm

Object distance, u = 3 cm

Focal length, f = -12 cm

Using mirror's formula

v = -2.4 cm

Image distance is 2.4 cm from the lens.

Magnification,

h' = 7.2 cm

The height of the image is 7.2 cm. This shows that the image is upright.

The lens used is concave lens.

ill do it for 100, also this isnt 80 its 40

laticia draws the diagram below to show earth’s magnetic field.

answer

the arrows to the right of earth should point up.