To Study the Refraction of Light Falling on a Glass Prism - Lab Experiment, Class 10 Science Video Lecture

to study the refraction of light falling
on a glass prison a prison is the
transparent refracting medium bounded by
two plane surfaces inclined at some
angle the angle between two refracting
surfaces is called the angle of the
prism a ma'am how can we study the
refraction of light falling on a glass
prism when a ray of light PQ from rarer
medium air is incident on the refracting
surface a B it gets refracted and bends
towards the normal to the plane a V the
refracted ray of light moves along Q R
at second surface AC the refracted ray
of light Q R has entered from glass to
air and emerges out along our s as it
has been bent away from the normal hence
it bends towards the base of the prism
let's do an experiment to study the
refraction of light falling on a glass
prism our aim is to study the refraction
of light falling on a glass prism the
materials required are a glass prism a
white paper drawing board drawing pins
all pins pencil protractor and measuring
scale procedure fix a sheet of paper on
the drawing board with the help of thumb
pins place a glass prism along its
triangular base at the middle of the
paper markets boundary ABC with a pencil
and then remove it draw a normal at the
point on a surface of side a B of prism
draw an incident ray at an angle of 30
degree to the normal and name it as EF
place the glass prism back to its
original position
ABC fix two pins D 1 and Q 1 on the line
EF at a separation of 6 centimeter trace
the image of pins p1 and q1 looking
from the other refracting phase AC of
the prism the images of pins p1 and q1
will appear to be i1 and i2 fix two more
pins p2 and q2 in such a way that the
feet of pins p2 and q2 appear to be on
the same straight line as the feet of
images I 1 and I 2 respectively
remove all the pins in the prism mark
the position of P 1 Q 1 and P 2 Q 2 join
the pin pricks p2 and q2 and extend it
up to refracting side AC of the present
and name it as GH join the line FG and
mark the line as refracted ray repeat
the above steps with different values of
angle of incidence between 30 degree to
60 degree observations angle of Prizm
angle a is equal to 60 degree angle of
incidence angle of refraction angle of
emergence angle of daeviation result the
angle of refraction and the angle of
emergence were found to be dependent on
angle of incidence precautions pins
should be fixed vertically and the feet
of pins should be observed while tracing
their positions while viewing pins and
the images the eye should be kept at a
distance from the pins so that all can
be seen simultaneously the angle of
incidence should be between 30 degree to
60 degree this operation should be
nearly 6 centimeter between the pins
while placing them a sharp pencil should
be used to mark boundary of the prison
and ray of light proper arrows should be
drawn to indicate directions of incident
or a refracted ray and emergent ray
thank you ma'am for this knowledgeable
experiment