Instructions: Choose One Answer from Each Pair of Selections

Q16: What is meant by the term dispersion?

Q17: When sunlight bounces off a surface at

Q17: Illustrate with a sketch the refraction and

Q18: Mirages, halos, and rainbows are all optical

Q19: Light that travels from a less-dense to

Q20: The appearance of a star to twinkle,

Q23: The bending of light as it passes

Q24: When no visible radiation strikes the rods

Q25: Halos are caused by _.<br>A) refraction of

Q26: Because of refraction, a star appears to