2nd Periodic Exam Reviewer (MIRRORS AND LENS) Flashcards
Bouncing off of light rays
Reflection
Ray of light approaching the mirror
Incident ray
Ray of light which leaves the mirror
Reflected Ray
An imaginary line perpendicular to the surface of the mirror
Normal Line
It states that the angle of incidence is equals to the angle of reflection.
Law of Reflection
The left side of the object appears as the right side of the image and vice versa.
Mirror Left-Right Reversal
Images in PLANE MIRROR
L - behind the mirror
O - always upright
S - always same size
T - always Virtual
Always same distance of the object
Called as CONVERGING MIRROR because the parallel incident rays converge/meet at the focal point.
Concave Mirror
Called as DIVERGING MIRROR because the parallel rays diverge after reflection.
Convex Mirror
The image formed in a CONVEX MIRROR is
Always formed upright/erect, reduced, and virtual.
They are used in side mirrors up among automobiles and department stores.
Convex Mirror
The four principal rays:
P-F RAYS
F-P RAYS
C-C RAYS
V RAY
It is the bending of light when it travels form one medium to another of different optical densities.
Refraction
It is thicker in the center than edges.
Convex Lens
Called as CONVERGING LENS as lights bend to a point beyond the lens on the axis.
Convex Lens
It is thicker at the edges and thinner at the center
Concave Lens
Called as DIVERGING LENS
Concave Lens
Image of Concave Lens forms ___________.
Always Upright
Always Reduced
Virtual Images
Where should an object be placed in front of a concave mirror so that the image will have same size as the object
At the center of curvature (c)
An object is placed in front of a converging lens at a distance less than F. The image image produced by the lens is _________.
Virtual
Upright
Enlarged
When a small object is placed on the principal axis of a concave mirror between the focus and a mirror
Erect, Magnified, Virtual
Which of the following are the characteristics of the image formed in the eyepiece of a microscope?
Virtual and Enlarged
An object is place in front of a converging lens at a distance between F and 2F. The image produced by the lens is __________.
Real, Inverted, Enlarged
What is the similarity between microscopes and refracting telescope?
They produce magnified image of distant objects.
An object is placed in front of a diverging lens at a distance between F and 2F. The image produced by the lens is __________.
Virtual, Upright, Reduced
In concave mirror, size of the object depends upon
Position of object
What kind of lens here it is THINNER in the middle than at the edge?
Concave Lens
If the size of the image formed by a converging lens is the same as the object, the object distance is __________.
Equal to the image distance
Which device magnifies images of minute (very small) things, otherwise invisible to the naked eye?
Optical Microscope
If you look down on a pool of wavy water, you can’t see your face clearly. Why?
Irregular Reflection of light happens on the surface of wavy water
You see the reflection of the clock without numbers in your plan e mirror. The image formed by the hands of the clock shows the time of 3:30. What is the REAL TIME?
8:30
Which phenomenon of light explains the formation of image by a lens?
Refraction
For a concave mirror, focus is _________.
Real
A mirror whose inner curved surface is reflecting is
Concave Mirror
For a convex mirror focus is
Virtual
A girl wants to see an enlarged image of her face. What can serve her purpose well?
Concave Mirror
The characteristics of the final image formed by a compound microscope is
Virtual, Inverted, and Enlarged
