1
Q
electromagnetic waves are
A
mechanical waves
2
Q
in reflection, the angle of incidence
A
must equal the angle of reflection
3
Q
in a vacuum, gamma rays and microwaves travel
A
at the same speed
4
Q
the principle on which mirrors work
A
reflection
5
Q
sunglasses reduce glare by using
A
polarization
6
Q
sunlight breaking into a rainbow of colors is
A
dispersion
7
Q
principle on which fiber optics is based
A
total internal reflection
8
Q
finding a frequency of a wave given the wavelength
A
wavelength times frequency equals 3.8x 10^8
9
Q
rate waves from greatest energy to least
A
gamma X-ray ultraviolet blue light infrared light
Physics Retake- Light
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