Question

⭐⭐⭐⭐ANSWER PLZZZ ⭐⭐⭐

Answer 1

convex lens is the answer

Answer 2

a.)  It is convex lens.

b.)   Distance is known as  focal length.

c.)   Black paper gets warmer than white paper when exposed to sunlight because black absorbs more radiation (in the form of heat and light energy) from the sun. White paper, on the other hand, reflects more of the heat and light energy