↳
radiation that activate sensation of
Light is a our
sight .
↳ Due to high frequency and low wavelength ,
it travels in straight line which is
called a
ray of light
.
&
↳ A
group of rays of light is called a beam of
light .
↳ wavelength range 400 nm-750nm
Reflection of light -
:
The phenomenon of bouncing back of light into the same
after striking called reflection
medium , a surface ,
is of light
.
incident Normal reflected
ray ray
· +
i)
,,,,,,,,,,,,,,, , , , , , ,
, Reflecting
surface
Law of reflection : -
to the
I the incident
ray ,
the reflected
ray and the normal
reflecting
surface at the point of incidence all lie in same plane.
.
2
Angle of incidence Li =
angle of reflection <V
speed of light, frequency wavelength
,
=
constant
-
It ray reflected by denser medium phase difference =
12
-
It ray reflected by raver medium phase difference = 0
, Reflection
V
Regular Diffused
I
al o
& e
E g
&
G
a
g
3
11111111111111111111I ,,,,,,,,,,,,,,,,,,,,, /I
Reflection by plane mirror - :
(Real RO Real object > VI virtual
image
vo virtual object RI Real object
·
>
> The
image formed by a plane mirror is
erect, same size and is formed at the
same distance behind the mirror as the
object
.
I (imaginary)
>
Image formed by a plane mirror has a
lateral inversion.
·
O
.
, ·
Is wrong
" ·
I, right
Deviation from plane mirror : -
S
↑
IR N RR
S = 21 - ITo
ii
G
↑ IT-21
....,,,,,,,,,,,,,
O
> l
O
⑧
I
, Image by two inclined plane mirror : -
↓ Number of images n=
360-1 ,
if z= even
integer
two possibilities
&
If b = odd
integer then there are .
-in
p object
1 9 / I I 111111 I / I I
Intro P
Object
·
111111111111111 I / I I
Object is placed symmetrically Object is placed asymmetrically
n=
26- n =
3
speed of image formed by plane mirror
F F
2
I
· I O I
> - · [ ⑧
U U rest 2u
us
Mirror at rest mirror is
moving
speed of with respect to
image
object = zu
A man of heighth requires a mirror of length at least equal to R
his
to see own complete image .
A plane mirror is rotated perpendicular to its
plane by an angle o while keeping the direction
of the incident ray constant, then the
reflected ray is rotated by an
angle 20.
radiation that activate sensation of
Light is a our
sight .
↳ Due to high frequency and low wavelength ,
it travels in straight line which is
called a
ray of light
.
&
↳ A
group of rays of light is called a beam of
light .
↳ wavelength range 400 nm-750nm
Reflection of light -
:
The phenomenon of bouncing back of light into the same
after striking called reflection
medium , a surface ,
is of light
.
incident Normal reflected
ray ray
· +
i)
,,,,,,,,,,,,,,, , , , , , ,
, Reflecting
surface
Law of reflection : -
to the
I the incident
ray ,
the reflected
ray and the normal
reflecting
surface at the point of incidence all lie in same plane.
.
2
Angle of incidence Li =
angle of reflection <V
speed of light, frequency wavelength
,
=
constant
-
It ray reflected by denser medium phase difference =
12
-
It ray reflected by raver medium phase difference = 0
, Reflection
V
Regular Diffused
I
al o
& e
E g
&
G
a
g
3
11111111111111111111I ,,,,,,,,,,,,,,,,,,,,, /I
Reflection by plane mirror - :
(Real RO Real object > VI virtual
image
vo virtual object RI Real object
·
>
> The
image formed by a plane mirror is
erect, same size and is formed at the
same distance behind the mirror as the
object
.
I (imaginary)
>
Image formed by a plane mirror has a
lateral inversion.
·
O
.
, ·
Is wrong
" ·
I, right
Deviation from plane mirror : -
S
↑
IR N RR
S = 21 - ITo
ii
G
↑ IT-21
....,,,,,,,,,,,,,
O
> l
O
⑧
I
, Image by two inclined plane mirror : -
↓ Number of images n=
360-1 ,
if z= even
integer
two possibilities
&
If b = odd
integer then there are .
-in
p object
1 9 / I I 111111 I / I I
Intro P
Object
·
111111111111111 I / I I
Object is placed symmetrically Object is placed asymmetrically
n=
26- n =
3
speed of image formed by plane mirror
F F
2
I
· I O I
> - · [ ⑧
U U rest 2u
us
Mirror at rest mirror is
moving
speed of with respect to
image
object = zu
A man of heighth requires a mirror of length at least equal to R
his
to see own complete image .
A plane mirror is rotated perpendicular to its
plane by an angle o while keeping the direction
of the incident ray constant, then the
reflected ray is rotated by an
angle 20.
