1. Without light, there would be no
(1 word). 2. The objects which we can see
can be:
(1 word)
objects which are able to generate their own light. (Ex: Sun)
(1 word)
objects which are capable of reflecting light to our eyes. (Ex: Moon)
3. The parallax method is used to locate the image of an object.
The parallax method consists in the
(2 words) motion of two objects caused by motion of the
(1
word).
The idea is that if the image of a nail and a real nail are not in the
same place, parallax will cause them to appear to move relative to each
other when you move your head. When the real nail and the image are in the
same place, however, there will be no parallax - and no
(2 words).
4. Directing of our sight in a
specific direction is sometimes referred to as the
(3 words)
5.
In order to view an OBJECT,
you must sight along a line at that
(1 word) ; and when you do
light will come from that object to your eye along the
(3 words) .
6. To view the IMAGE of an object in a mirror , you
must sight along a line at the
(1 word). One of the many rays of light from the object will approach the
mirror and reflect along your
(3 words) to your
(1 word) . 7. a) An
(1 word) is a position in space where all the reflected light appears to
diverge from.
b) The image can be found at that position where observers are
(1 word) when viewing the
(1 word) of an object. The image of an object is located
(1
word)
the
mirror where all the light appears to
(1 word) from.
c) The image point of an object is that
(1 word) point of all of the lines of sight extended
(1 word).
8. An object's image is
positioned directly across the mirror along a line which runs
(1 word) to the
mirror. The distance from the mirror to the object (known as the
(2 words) ) is equal to the distance from the mirror to the image
(known as the
(2 words)).
9 An image is formed in a plane mirror because:
Rays of light
(1 word) from an object in a variety of directions. Some of this rays
of light reach the mirror and
(2 words)
the mirror according to the law of reflection.
Each one of these rays of light can be extended backwards
(1 word) the mirror where they will all intersect at the
(2 words)
(4 words) and view it.
10. See the below diagram
and fill in the blanks:
a) T he
ray of light approaching the mirror is known as the
(2 words). b) The ray of light which
leaves the mirror is known as the
(2 words). c) The line drawn
perpendicular to the surface of the mirror at the point of incidence where
the ray strikes the mirror; is known as a
(2
words).
d) The angle between the
incident ray and the normal is known as the
(3 words).
e) The angle between the
reflected ray and the normal is known as the
(3 words). f) The law of reflection states that when a ray of light reflects off a
surface,
(11 words). 11. Consider the diagram below.
a) The angle of incidence is:
b) The angle of reflection is:
12. a) In the case of plane mirrors, images are formed in locations where
light
(2 words)
actually reach. A plane mirror creates an image which is
(1 word) , being located behind the mirror where
light does not really pass.
b) Viewing an image of yourself in a plane mirror if you raise your
left hand, you will notice that the image raises its
(1 word)
hand. The orientation of the image in a plane mirror is
termed as
(3 words) .
If you were a shirt displaying the word OPTICS when
viewed in a mirror you'll read
(1 word) .
Not only the
(1 word)
of letters
is reversed but also the actual orientation of the
letters themselves is reversed as well. In plane mirrors the image is
NOT top-bottom vertical reversed but it is said to be
(1 word)
as opposed to inverted.
c) For plane mirrors, the object distance (often represented by the
symbol do ) is
(1 word)
to the image distance (often represented by the symbol di ).
d) Magnification is defined as the ratio of the
(1 word) dimensions to the
(1 word) dimensions. Plane mirrors produce
images which have a magnification of
(number) .
13. The ratio between portion of mirror required to view the image and
the height of the object is
(numbers) .
The distance between the object/person and the mirror
(2 words) affect the amount of mirror which is
needed to see the image of the object /person.
14. Right angle mirror is a pair of plane mirrors adjoined at right
angles to each other which produce
(number)
images . Primary images in a plane mirror exhibit
(3 words) . (While the object is raising her left hand, the image is
raising the right hand.) The secondary image (the middle image at
crease of mirror)
(2 words)
exhibit left - right reversal. (while the object is raising the left hand,
the image is also raising the left hand.)
The primary images are produced by a
(1 word)
reflection whereas a secondary image is produced by a
(1 word)
reflection of light.
15. a) A single mirror produces
(number) image.
b)
Two mirrors at 90 °
produce
(number) images.
c)
Two mirrors at 60 °
produce
(2 words) 3
images.
d) Two parallel mirrors (at 0° )
produce
(1 word)
images.
When you've finished, click on SUBMIT. (Make sure you haven't skipped any questions unintentionally)