8. Khaled has a red toy that is painted with a special kind of paint. When he puts the toy under a desk lamp, it stays red. When he puts the toy under an infrared lamp, it turns blue. Why does the infrared light cause the toy to turn blue when the light from the desk lamp does not

okay i have so many questions. but the big one here is: um wt..f is this mess? ?

explanation:

v=uf/(u-f)

= 5.-10/(5+10) convex lens has negative focal length

current and voltage can both be different in different parts of a circuit so it matters where you place the ammeter and voltmete