An object is 15.0 cm from a convex lens. Its image is 12.0 cm from the lens on the other side. What is the focal length of the lens? Question 22 options:

1.25 cm

8.6 cm

6.67 cm

27.0 cm

Question 23 (1 point)
The height of an object is 10 cm, and the height of its image is 6 cm. What is the magnification?

Question 23 options:

4

16

0.6

1.67

Question 24 (1 point)
The focal length of a lens is dependent on the

Question 24 options:

location of the object used

shape of the lens and the material it is made from

radius of curvature of the lens

material the lens is made from

Question 25 (1 point)
A concave mirror has a radius of curvature of 1.6 m. The focal length is

Question 25 options:

3.2 m.

none of the above.

32 cm.

0.80 m.