Question 22 (1 point) 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

Starting with only the balmer series light (visible light), how could we ensure that the solar panels generate a current that mark can use for his power station? a)by gradually increasing the brightness (amount) of light that we shine on it. b)by gradually increasing the frequency of the light we shine on it. c)by gradually increasing the wavelength of the light that we shine on it.