00:16 Preparing for Class 8th light chapter 04:04 Light enables us to see and understand the world around us. 09:01 Reflection, angle of incidence, and normal in light. 12:14 First law: Angle of incidence is equal to angle of reflection 19:06 Mirror reflection explained: regular vs. diffuse. 21:50 Understanding irregular reflection and its impact on the surface 27:39 Symmetrical letters are reflected the same in a mirror 30:32 Properties of Image Formation by Plane Mirror 36:02 Creating beautiful patterns using multiple reflections 38:06 Take help now for small information, as you won't get another chance later 43:05 White light splits into its constituent colors 45:17 Pupil size changes with light intensity 49:24 Optic nerve and blind spots explained 52:46 Transition from bright light to darkness activates cells inside our eyes 57:10 Taking a break for 2-3 minutes is important for children's learning
Important Topics covered: 00:16 Preparing for Class 8th light chapter 04:04 Light enables us to see and understand the world around us. 09:01 Reflection, angle of incidence, and normal in light. 12:14 First law: Angle of incidence is equal to angle of reflection 19:06 Mirror reflection explained: regular vs. diffuse. 21:50 Understanding irregular reflection and its impact on the surface 27:39 Symmetrical letters are reflected the same in a mirror 30:32 Properties of Image Formation by Plane Mirror 36:02 Creating beautiful patterns using multiple reflections 38:06 Take help now for small information, as you won't get another chance later 43:05 White light splits into its constituent colors 45:17 Pupil size changes with light intensity 49:24 Optic nerve and blind spots explained 52:46 Transition from bright light to darkness activates cells inside our eyes
As the 30 angle was between incident ray and surface and not between the normal and incident ray.. and if the angle between the the surface and incident ray is 30 then, the angle of incident will be = 90-30 which is 60 so.. the angle of reflection = angle of incidence.. that is 60. Hope it helped you..!!
Introduction to Light Light is a fundamental aspect of our perception of the world around us. It enables us to see and interact with objects. In the context of Class 8 Science, understanding light involves exploring its properties, behavior, and how it interacts with different surfaces. Nature of Light Light behaves as both a particle and a wave. It travels in straight lines and can be reflected, refracted, or absorbed by different materials. The phenomenon of reflection is particularly significant, as it allows us to see objects. When light hits an object, some of it is reflected back to our eyes, enabling us to perceive the object's shape and color. Reflection of Light The concept of reflection involves the bouncing back of light rays when they strike a surface. This process can be categorized into two types: regular (or specular) reflection and diffuse reflection. Regular reflection occurs on smooth surfaces, such as mirrors, producing clear images. In contrast, diffuse reflection happens on rough surfaces, scattering light in multiple directions, resulting in unclear images. Laws of Reflection The laws of reflection are crucial to understanding how light behaves. The first law states that the angle of incidence equals the angle of reflection; both angles are measured from the normal, an imaginary line perpendicular to the surface at the point of incidence. The second law asserts that the incident ray, reflected ray, and normal all lie in the same plane. Human Eye and Vision The human eye is an intricate organ responsible for vision. Light enters through the cornea, passes through the pupil, and is focused by the lens onto the retina, where it forms an image. The retina contains photoreceptor cells that convert light into neural signals, which are sent to the brain via the optic nerve. This process allows us to perceive colors and shapes. Color and the Spectrum White light is composed of multiple colors, which can be observed when it is refracted through a prism or during natural phenomena such as rainbows. The spectrum of light includes seven colors: red, orange, yellow, green, blue, indigo, and violet. Each color has a different wavelength, contributing to its unique properties. Applications of Light Light has numerous applications in everyday life, such as in optical instruments like periscopes and telescopes, which utilize reflection and refraction to enhance our ability to observe distant objects. Understanding light is also essential in fields such as photography and astronomy. Conclusion In summary, the study of light encompasses its nature, behavior, and significance in our daily lives. By grasping these concepts, students can appreciate the role light plays in enhancing our understanding of the world, preparing them for advanced studies in physics and related fields. plss give a like it took a long time to type this..............................
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00:16 Preparing for Class 8th light chapter
04:04 Light enables us to see and understand the world around us.
09:01 Reflection, angle of incidence, and normal in light.
12:14 First law: Angle of incidence is equal to angle of reflection
19:06 Mirror reflection explained: regular vs. diffuse.
21:50 Understanding irregular reflection and its impact on the surface
27:39 Symmetrical letters are reflected the same in a mirror
30:32 Properties of Image Formation by Plane Mirror
36:02 Creating beautiful patterns using multiple reflections
38:06 Take help now for small information, as you won't get another chance later
43:05 White light splits into its constituent colors
45:17 Pupil size changes with light intensity
49:24 Optic nerve and blind spots explained
52:46 Transition from bright light to darkness activates cells inside our eyes
57:10 Taking a break for 2-3 minutes is important for children's learning
Thank you for this
Wy are you so jobless???
@Danish_Kumar_The_Rockstar Its his wish, he is trying to help us, unlike u
Thankk youu sooo muchh💗💯✨
R u sooo jobless?
51:00 Yes
Vote for surabh sir
SURABH SIR 👍. 👇
Important Topics covered:
00:16 Preparing for Class 8th light chapter
04:04 Light enables us to see and understand the world around us.
09:01 Reflection, angle of incidence, and normal in light.
12:14 First law: Angle of incidence is equal to angle of reflection
19:06 Mirror reflection explained: regular vs. diffuse.
21:50 Understanding irregular reflection and its impact on the surface
27:39 Symmetrical letters are reflected the same in a mirror
30:32 Properties of Image Formation by Plane Mirror
36:02 Creating beautiful patterns using multiple reflections
38:06 Take help now for small information, as you won't get another chance later
43:05 White light splits into its constituent colors
45:17 Pupil size changes with light intensity
49:24 Optic nerve and blind spots explained
52:46 Transition from bright light to darkness activates cells inside our eyes
15:40
32:37 infinite hair tunnel of doom
Sir you teach very good and entertaining
20:02 yes sir it's parallel
2:52 2:54 2:55
very good explanation from every teachers
Light is source of energy which helps us to objeat
Ek kaam Karo pahle bacchon se hi baat kar lo baad main padhana 😂😅
Sidd name Wale sab aise hi hote hai kya matlab savage
Mera bhai bhi same hai
Correct
Yes very right
❤❤
Sir I have a doubt in laws of reflection
*If angle of incident is 30 the how is angle of reflection is 60
As the 30 angle was between incident ray and surface and not between the normal and incident ray.. and if the angle between the the surface and incident ray is 30 then, the angle of incident will be = 90-30 which is 60 so.. the angle of reflection = angle of incidence.. that is 60.
Hope it helped you..!!
27:08 A, H, I, M, O, T, U, V, W, X and Y.
motu🤣🤣
Ya❤🎉😂
Sir I am from Australia.But sir I can understand everything that you teach.
Broo
INDIA HAS THE BEST TEACHERS...😅
Thnk you sir it helped me alot
Thank you sir and byju's
My exam is in like a week this helped a lot thank u so much ❤😊😊
All the best
Today is my science paper 😢😢
For you all the best
There are 2 laws of reflection
Yes
15 degree in 10 :43
57:48 minutes mein sew 30 minute mehra liye 25 minutes padhaye 2:48 minutes apni tareef kiye.... bohot sahi 😊
The image formed is virtual
😍😍😍 sir thank what are you doing
Refraction of light?
*reflection 💀💀💀
Thanks you sir 😊 for explaining this chapter😊
Sir,yes
Good evening
12:31
Sir it says that all rays go in se direction not in opposite direction
Introduction to Light
Light is a fundamental aspect of our perception of the world around us. It enables us to see and interact with objects. In the context of Class 8 Science, understanding light involves exploring its properties, behavior, and how it interacts with different surfaces.
Nature of Light
Light behaves as both a particle and a wave. It travels in straight lines and can be reflected, refracted, or absorbed by different materials. The phenomenon of reflection is particularly significant, as it allows us to see objects. When light hits an object, some of it is reflected back to our eyes, enabling us to perceive the object's shape and color.
Reflection of Light
The concept of reflection involves the bouncing back of light rays when they strike a surface. This process can be categorized into two types: regular (or specular) reflection and diffuse reflection. Regular reflection occurs on smooth surfaces, such as mirrors, producing clear images. In contrast, diffuse reflection happens on rough surfaces, scattering light in multiple directions, resulting in unclear images.
Laws of Reflection
The laws of reflection are crucial to understanding how light behaves. The first law states that the angle of incidence equals the angle of reflection; both angles are measured from the normal, an imaginary line perpendicular to the surface at the point of incidence. The second law asserts that the incident ray, reflected ray, and normal all lie in the same plane.
Human Eye and Vision
The human eye is an intricate organ responsible for vision. Light enters through the cornea, passes through the pupil, and is focused by the lens onto the retina, where it forms an image. The retina contains photoreceptor cells that convert light into neural signals, which are sent to the brain via the optic nerve. This process allows us to perceive colors and shapes.
Color and the Spectrum
White light is composed of multiple colors, which can be observed when it is refracted through a prism or during natural phenomena such as rainbows. The spectrum of light includes seven colors: red, orange, yellow, green, blue, indigo, and violet. Each color has a different wavelength, contributing to its unique properties.
Applications of Light
Light has numerous applications in everyday life, such as in optical instruments like periscopes and telescopes, which utilize reflection and refraction to enhance our ability to observe distant objects. Understanding light is also essential in fields such as photography and astronomy.
Conclusion
In summary, the study of light encompasses its nature, behavior, and significance in our daily lives. By grasping these concepts, students can appreciate the role light plays in enhancing our understanding of the world, preparing them for advanced studies in physics and related fields.
plss give a like it took a long time to type this..............................
Thank you for this summary
Thank you so much
Good video Sir
Thank you for Good explanation
Thku sir❤
Sir can you please do a session on light's chapter ncert solutions
Thnk u Sr
interference and polarisation
46:48
Thankyou sir for this session 😃😃 you made all concepts easy
Most welcome 😊
thankyou sir
@@byjus-class-678
Example for computer disk
16:02
Sir I am from Australia.But sir I can understand everything that you teach. I
Love from india
Reflected light can BL reflection again
21:17 False.
😍😍😍😍😍thank you sir
It works😊😊😊😊 I get shoke
❤❤😊
35:03 KALEIDOSCOPE
21:26 False
I have exam tommorow and Instead of continuing the video I am looking at the circle and square lol
hahahahahahahahah sooo funny
sir your short is very easy
Sir is table a polished surface
yes
Nice session sir I am bsc student student but now I did realize something wrong after watching 👀
Good evening sir❤
5.7
very good
thanks sir
U M O A W X V T 27:11
Ya sir your very crazy ti teach
😊😊
What is normal????
PLZ START NOW SIR
Good morning sir
sir I have a doubt, when we use a light or a ray we cant see in the air. Why?
Because it does not reflect
@@neetusharmasharma9284 tq bro
@@lingeshachs4672 it's ok bro
guys one tip, watch in 1.5x it saves your time...
What is reflection
Thankyou sir for this session you made all the concepts easy
27:49 E is symmetrical diagonally
Yes
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Hiii sir i am fine and i hope you also fine
❤😊
sir what is snell`s law
i LUVVVVV BYJUSSS
Sir which part of eye give it it's colour and how? There is a white portion of eye for which reason it is?
Iris gives distinctive colours in our like like brown , black , and blue. We shall read that how it gives in 9 or 10 class so have patience.
@@seemaverma7933 Thankyou
rods and cones
True
Kon kon comments padhna aya hai 😂😂 you are legend
Atendence lag va lo👍
Mai present hu😂😂😂😂😂
Wow❤❤❤❤❤❤🎉
Yes
chapter complete ho gya sir thank 🤧🙃🙃😉😉😊
Sir if we point a laser in still water what happens
Muntazir
Thanks sir really good samajh aaya tho mja aaya maja aaya to samjh aaya
Kon kon Ek din Phele video dhek raha hai 😂😂😂
Me
Me not 🚫
Me
angle i = angle r
Sir please explain again how mutiple umage is formed in kaliesioscope and waht is kalideoscope
good evening sir
PLZ DO ONE VEDIO ON MICROORGANISM
What is surface
reflection
60 15:19
True
you are the master of all but not best from my teacher of science "jai hind"
Sir I understand
It is work
60 degree
Best
😀😀
Thanks sir
Sir please make kaleidoscope and periscope ..
hi sir
I can see