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level: Level 1

Questions and Answers List

level questions: Level 1

Question	Answer
A mirror that has the shape of a piece cut out of a spherical surface	Spherical Mirrors
The first mirrors used by humans	Pools of water
Earliest known manufactured mirrors	Polished stoned pieces
The mirrors that the Chinese began making	Silver-mercury amalgams
Conducted various experiments with curved polish iron mirrors	Claudius Ptolemy
The point in the center of the mirror passes through the curve of the mirror and has the same tangent and curvature at that point.	Center of curvature
It's the linear distance between the pole and the center of curvature	Radius of curvature
The imaginary line passes through the optical center and the center of curvature of any lens or a spherical mirror	Principal axis
Midpoint of the spherical mirror	Pole
A point from which the reflection of light actually happens	Aperture
Gives the size of the mirror	Aperture
Also called the focal point	Principal focus
It’s on the axis of a mirror or lens wherein rays of light parallel to the axis converge or appear to converge after reflection or refraction.	Principal focus
It’s any given point, where light rays parallel to the principal axis, will converge after getting reflected from the mirror.	Focus
types of spherical mirrors	concave mirror and convex mirror
the reflective surface is curved inwards	concave mirror
the reflective surface is curved outwards	convex mirror
the reflected image is magnified but the field of view is limited	concave mirror
depending on the focal length, the reflective image is reduced but the field of view is more	convex mirror
used as shaving mirrors or by dentists and even in telescopes	concave mirror
very useful for drivers as the blind spot are drastically reduced	convex mirror
distance from the vertex to the center of curvature	R or radius
the point where the principal axis meets the reflective surface	Point A
Point lies in the midway between the vertex and the center of curvature	F or the focal point
The distance between the vertex and the focal point of the mirror	f or the focal length
a line passing the center of this sphere which touches the reflecting surface at its center	Principal axis
Rearview mirror	convex mirror
security mirrors in atm	convex mirror
satellite dishes	concave mirror
headlights in car	concave mirror
shaving mirror	concave mirror