Question

Which of the following involves the diffraction of light waves?

A. the lens of a magnifying glass makes an image look larger and upside down.
B. a glass of water acts like a prism, splitting sunlight from a window into a rainbow on the far wall.
C. light from a hallway spreads out after passing through the keyhole of a closed door.
D. a stained glass window only allows some of the light from the sun into a room.

Answer 1

The answer is C. light from a hallway spreads out after passing through the keyhole of a closed door.

Answer 2

D because its not letting all the light in