Applications of total Internal refelction in urdu hindi. Optical fiber in urdu, Endoscope in urdu and light pipe in urdu explained well in this video lecture.
Queries solved in this video
1. What are Applications of total Internal refelction TIR
2. What is Endoscope
3. What is endoscopy
4. What are different types of Endoscope
5. How Endoscope works
6. What is light pipe
7. What is optical fiber
Related searches
1. Optical fiber in urdu/hind
2. Working of optical fiber in hindi and urdu
3. Applications of total Internal refelction
4. Endoscope sabaq
5. Optical fiber sabaq
6. Light pipe sabaq
7. Endoscope in urdu hindi
12.6 APPLICATIONS OF TOTAL INTERNAL REFLECTION
Totally Internal Reflecting Prism
Many optical instruments use right-angled prisms to reflect a
o o
beam of light through 90 or 180 (by total internal reflection)
such as cameras, binoculars, periscope and telescope. One of
o
the angles of a right-angled prism is 90 . When a ray of light
strikes a face of prism perpendicularly, it enters the prim
without deviation and strikes the hypotenuse at an angle of
o o
45 (Fig.12.10). Since the angle of incidence 45 is greater than
o
critical angle of the glass which is 42 , the light is totally
o
reflected by the prism through an angle of 90 . Two such
prisms are used in periscope (Fig.12.11). In Fig.12.12, the
o
light is totally reflected by the prism by an angle of 180 . Two
such prisms are used in binoculars (Fig.12.13).
Optical Fibre
Total internal reflection is used in fibre optics which has
number of advantages in telecommunication field. Fibre
optics consists of hair size threads of glass or plastic through
which light can be travelled (Fig. 12.14). The inner part of the
fibre optics is called core that carries the light and an outer
concentric shell is called cladding. The core is made from
glass or plastic of relatively high index of refraction. The
cladding is made of glass or plastic, but of relatively low
refractive index. Light entering from one end of the core
strikes the core-cladding boundary at an angle of incidence
greater than critical angle and is reflected back into the core
(Fig. 12.14). In this way light travels many kilometres with
small loss of energy.
In Pakistan, optical fibre is being used in telephone and
advanced telecommunication systems. Now we can listen
thousands of phone calls without any disturban
Light Pipe
Light pipe is a bundle of thousands of optical fibres bounded
together. They are used to illuminate the inaccessible places
by the doctors or engineers. For example, doctors view inside
the human body. They can also be used to transmit images
from one place to another (Fig. 12.15).
Fig.12.15: A lens and light pipe can be used together to produce a
magnified transmitted image of an object
Endoscope
An endoscope is a medical instrument used for exploratory
diagnostics, and surgical purposes. An endoscope is used to
explore the interior organs of the body. Due to its small size, it
can be inserted through the mouth and thus eliminates the
invasive surgery. The endoscopes used to examine the
stomach, bladder and throat are called Gastroscope,
Cystoscope and Bronchoscope respectively. An endoscope
uses two fibre-optic tubes through a pipe. A medical
procedure using any type of endoscope is called endoscopy.
The light shines on the organ of patient to be examined by
entering through one of the fibre tubes of the endoscope.
Then light is transmitted back to the physician’s viewing lens
through the other fibre tube by total internal reflection
(Fig.12.16). Flexible endoscopes have a tiny camera attached
to the end. Doctor can see the view recorded by the camera
on a computer screen.
#OpticalFiber
#Endoscope
#endoscopy
#LightPipe
#FreeOnlineClasses
#ApplicationsOfTotalInternalReflection
#ApplicationsOfTIR
#TIR
#sabaq
#physicWallahSabaq
#physicsWallahSubject
#10thphysics
24 сен 2024
