Question

An object is placed 30.0 cm to the left of a convex lens with a focal length of +8.0 cm. Draw a ray diagram showing the location of the image, and calculate the distance of the image from the lens.

Answer 1

@Michele_Laino

Answer 2

we have the subsequent drawing:

we have to apply this formula:
\[\Large \frac{1}{p} + \frac{1}{q} = \frac{1}{f}\]
where p= 30 cm, f= 8 cm
so what is q?