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sin and cos 30 degrees?
sin 30 = 1/2
cos 30 = sqrt 3 /2
What is the sin and cos of 0
sin 0 = 0
cos 0 = 1
What is the sin and cos of 45 degrees
A transverse wave is a wave that causes vibration in the medium in a perpendicular direction to its own motion.
ex: electromagnetic waves (LIGHT)
Longitudinal waves are waves that have vibrations along or parallel to their direction of travel.
Is a diverging lens and diverging mirrors always have negative or positive focal length?
What kind of lens or mirror can produce a real image?
- only a converging lens or converging mirror can produce a real image
- -->light rays must converge at one point in order to focus the image
A convex mirror is converging or diverging?
A convex mirror is diverging = DEV - diminished, erect (upright), virtual
real or virtual: o > f
- If o > f
- the magnification is negative
Real or virtual: o < f
image distance will be negative and the image is virtual
A convex mirror always produces what kind of image?
virtual, because it is a diverging mirror
MIRRORS: Images that are virtual are always in front or behind the mirror?
For mirrors images that are virtual are behind the mirror but for a lens, virtual images are found in front of the lens (same side as object)
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