Light - Reflection & Refraction FULL CHAPTER | Class 10th Science | Chapter 9 | Udaan

✨ Playlist ✨

✨ Links ✨

✨ Topics covered ✨

00:00 - Introduction
01:24 - Particle Nature Of Light
05:42 - The Wave Theory : EM Wave
07:45 - Ray Nature Of light
17:03 - Phenomenon Of Light : Reflection
19:19 - Laws Of Reflection
21:27 - Plan Mirror
21:39 - Image Formation By Plan Mirror
28:50 - Examples Of Lateral Inversion
40:25 - Important Terms : Spherical Mirrors
41:53 - Rules To Obtain Image
44:24 - Image Formation : Concave Mirror
54:52 - Image Formation : Convex Mirror
58:31 - Uses Of Mirrors
01:01:11 - Topic Sign Convention In Mirrors
01:05:33 - One Step Ahead : Formula
01:22:57 - Topic : Phenomenon Of Light : Refraction
01:26:09 - Laws Of Refraction
01:27:41 - Topic : Rules Of Refraction ( Transiting Media )
01:31:11 - When Refraction Does Not Occur !!
01:33:24 - Topic Refraction Through Glass Slab
01:38:23 - Topic Refraction Through Spherical Lenses
01:42:21 - Topic : Rules To Obtain Image
01:43:49 - Image Formation : Convex Lens
01:49:41 - Topic : Image Formation : Concave Lens
01:52:21 - Uses Of lenses
01:53:16 - Topic : One Step Ahead : Sign Convention In Lenses
01:53:55 - Topic : One Step Ahead : Formula
02:21:59 - Thank You !


#Class10th #Udaan #class10Physics #LightReflectionandrefraction
#LightReflectionandrefractiononeshot

[Classth-UDAAN]

Padhai ko aur easy karne ke liye ye telegram group join karo 🤩

[yuvrajyadav]

Mai jab bhi lecture kholne baithta hu to gharwale piche padd jate hai ki school me nahi padhaya nahi. samajhte...unko lagta hai ki school ki Copy ke question ans ratne se board me top maar ho chuka hu

[krishnaku]

The one who can compresshed the 8hour's ch in 2 and half an hour with full concept is RAKSHAK SIR❤❤❤.

[AfreenMalik-ctvk]

[Some important and extra points]

7:50 (intensity of light)
10:40 (what happens when light incident)
13:30 (How do we see)
17:15 (bounces back into the same medium)
18:00 (normal is drawn to find <i and <r)
20:00 (same plane)
22:00 (image formation in plane mirror) (2 rays)+ 23.00
25:00 (distance)
30:00 (find angle)
31:10( spherical mirrors)
33:10 ( pole form when principal axis cut spherical at a point)
34:00 (aperture) + 40:50
35:00 ( focal length and R)(R=2f)
36:20 (concave & convex)
40:30 (important terms)
48:40 ( at C)
50:20 (at F)
53:00 (b/w F and P)
57:00 ( convex image)
58:03 ( use 6th case)
1:00:00 ( large field of view)
1:03:00 (sign convention)
1:05:40 ( 1/v+1/u)
1:06:00 ( height of image as compared to height of object)
1:08:00 (magnification)
1:09:20 ( image is _times enlarged)
1:10:00 ( yaad)
1:16:20 ( m=-1 = same size)
1:19:00 ( small× diminished ✓)
1:33:00 ( diagram when refration doesn't occur)
1:37:30 (lateral displacement
1:40:00 (signs in lenses)
1:43:00 (undiviated)
1:44:15 ( real rays so real inverted)
1:48:40 (behind the lens)

[pragya]

Trick to learn:
RIVER
RI- real and inverted
VE- virtual and erect
Aur jate jate like kar ke jana sab😅

[Round__Gaming]

Rakshak Sir Is really a rakshak Of 10 class students 🙂🙂

[honeyrai]

New student in 10 class 2024-2025 batch..🎉

[shivanshsharma-yvwm]

00:00 - Introduction
01:24 - Particle Nature Of Light
05:42 - The Wave Theory : EM Wave
07:45 - Ray Nature Of light
17:03 - Phenomenon Of Light : Reflection
19:19 - Laws Of Reflection
21:27 - Plan Mirror
21:39 - Image Formation By Plan Mirror
28:50 - Examples Of Lateral Inversion
40:25 - Important Terms : Spherical Mirrors
41:53 - Rules To Obtain Image
44:24 - Image Formation : Concave Mirror
54:52 - Image Formation : Convex Mirror
58:31 - Uses Of Mirrors
01:01:11 - Topic Sign Convention In Mirrors
01:05:33 - One Step Ahead : Formula
01:22:57 - Topic : Phenomenon Of Light : Refraction
01:26:09 - Laws Of Refraction
01:27:41 - Topic : Rules Of Refraction ( Transiting Media )
01:31:11 - When Refraction Does Not Occur !!
01:33:24 - Topic Refraction Through Glass Slab
01:38:23 - Topic Refraction Through Spherical Lenses
01:42:21 - Topic : Rules To Obtain Image
01:43:49 - Image Formation : Convex Lens
01:49:41 - Topic : Image Formation : Concave Lens
01:52:21 - Uses Of lenses
01:53:16 - Topic : One Step Ahead : Sign Convention In Lenses
01:53:55 - Topic : One Step Ahead : Formula
02:21:59 - Thank You !

[anunayene]

THIS LECTURE WILL HELP THE STUDENTS WHO DON'T AFFORD THE BATCHES .❤
ALAKH SIR KE LIYE EK LIKE TO BANTA HAI ❤❤❤❤❤❤❤❤❤❤

[bhavya]

Rakshak sir never found a teacher so pure and helpful like you thank you yearly me bhi aapki wajah se 24/26 aaye or pre board me bhi aapki wajah se marks aaye aab boards phodungi you sir love from Udaan 2.0
Lots of respect from Kabutar🥺❤️🔥

I got 95 out of 100 in Science in my boards and I literally watched this lecture one night before my board exam.
PW is emotion❤️

[preetji]

1:19:31 answer is
v = 3.75cm
m = 0.375
HEIGHT OF IMAGE = 0.75
NATURE: virtual, erect, diminished .

1:21:10 ANSWER IS
V = 60/7CM
M=3/7
Height of image = 15/7
NATURE: virtual, erect, diminished.
(THANK YOU SIR FOR THE GREAT VIDEO)

[kush]

Summary:

Light can be viewed as both a particle (photon) and a wave. The concepts of reflection, refraction, and the properties of lenses are discussed in detail.


Key moments:
00:00 Light has dual nature, exhibiting both particle-like and wave-like properties. The intensity of light depends on the number of photons, with brighter light having more photons, showing its particle nature.
-Historical evolution of the understanding of light from Newton's corpuscular theory to Einstein's photon theory.
-Discussion on the electromagnetic wave nature of light and how it can be perceived by the human eye compared to other wavelengths in the electromagnetic spectrum.
-Exploration of the intensity of light based on the number of photons, highlighting the relationship between brightness and the quantity of photons.
10:05 Light rays reflect off surfaces because they need a source of light to be visible. Reflection occurs when light bounces off a surface, following the laws of incident and reflected angles.
-Explaining the importance of a light source for visibility and the role of reflection in making objects visible.
-Understanding the behavior of light rays when they hit surfaces and the concept of reflection.
-Discussing the laws of incident and reflected angles in reflection, emphasizing their equal importance in determining the direction of reflected light.
20:07 Understanding the concept of plane mirrors involves incident rays, reflected rays, and normal lines, leading to the creation of images with specific properties and characteristics.
-Exploring the concept of plane mirrors and incident rays. It involves understanding reflections and angles of incidence.
-Discussing the nature of images created by plane mirrors. It includes the distance, height, and characteristics of the reflected image.
-Explaining lateral inversion in plane mirrors. It details how images appear laterally inverted and the concept of virtual images.
31:12 Understanding the concepts of concave and convex mirrors is crucial in optics. Concave mirrors converge light rays, creating real images, while convex mirrors diverge light rays, forming virtual images.
-Differentiating between concave and convex mirrors based on their light convergence or divergence properties is essential for image formation.
-Real images are produced by concave mirrors when light rays converge, while virtual images are formed by convex mirrors when light rays diverge.
40:29 Understanding the concepts of spherical mirrors and image formation involves terms like center of curvature, principal axis, and focal length. These concepts help determine the nature and size of the image formed by the mirror.
-Explanation of the terms related to spherical mirrors like center of curvature and principal axis. These terms play a crucial role in understanding mirror properties.
-Discussion on how the position of the object relative to the mirror affects the nature and size of the image formed. Concepts of real and inverted images are explained.
-Importance of placing the object correctly in relation to the mirror to determine the characteristics of the image formed. The role of object position in image formation is highlighted.
56:00 Understanding the nature of images formed by convex mirrors is crucial. Convex mirrors always create virtual, erect, and diminished images, making objects appear smaller and creating a specific field of view.
-Characteristics of images formed by convex mirrors. They are always virtual, erect, and diminished in size, providing a unique perspective of the object being reflected.
-Field of view created by convex mirrors. Convex mirrors offer a larger field of view, allowing for a broader perspective and making objects appear smaller and farther away.
1:01:06 The video explains the concepts of Cartesian planes, sign conventions, and mirror formulas. It emphasizes understanding the origin, positive and negative values, and magnification in mirror images.
-Explanation of Cartesian planes and sign conventions.
-Detailed explanation of mirror formulas and magnification in mirror images.
-Importance of practice and hard work in understanding and applying the concepts.
1:11:14 To achieve big goals in life, one must step out of their comfort zone and challenge themselves. Overcoming comfort zones is essential for significant achievements and personal growth.
-Importance of pushing boundaries for personal growth and success. Stepping out of comfort zones leads to self-improvement and achieving big goals.
-Explanation of mirror formulas and numerical problems in optics. Understanding focal lengths, image positions, and mirror types in physics.
-Different types of mirrors and their characteristics. Exploring concave and convex mirrors, their focal points, and applications in optics.
1:21:23 The video discusses the concept of refraction of light, explaining how light changes direction when passing through different transparent mediums with varying optical densities.
-Explanation of different transparent mediums and their refractive indices like vacuum, glass, water, kerosene, and diamond.
-Understanding the relationship between optical density, refractive index, and the behavior of light when transitioning between mediums of different densities.
-Introduction to the rules of light transition between different mediums, including the behavior of light rays in relation to the normal line and angles of incidence.
1:31:32 Understanding the concept of refraction when light falls normally, leading to no refraction, and discussing lateral displacement and spherical lenses in optics.
-Explaining the concept of normal incidence and zero refraction when light falls perpendicular to a surface.
-Discussing the absence of refraction and the behavior of light in different mediums.
-Introducing the concept of lateral displacement and moving on to understanding spherical lenses in optics.
1:41:36 Understanding the rules of focal length and image formation in lenses is crucial for determining the nature and size of images. Sign conventions play a key role in simplifying numerical calculations in optics.
-Explanation of focal length and image formation rules in lenses, emphasizing the impact on the nature and size of images.
-Sign conventions in optics and their significance in numerical calculations for determining object positions and image characteristics.
1:53:50 Understanding the lens formula and focal length calculations are crucial in optics. The video discusses how to determine object distance, image distance, and focal length using the lens formula and specific measurements.
-Explanation of lens formula and focal length calculations for optics applications. It emphasizes the importance of understanding object distance, image distance, and focal length.
-Discussion on the nature of lenses, including convex and concave lenses, and their impact on image formation. Exploring the concept of magnification and the significance of lens types in optics.
-Introduction to the concept of power in lenses and the calculation of power using diopters. Understanding the relationship between power and focal length in optics applications.
2:07:02 Refractive index explains how light changes speed in different mediums. Absolute and relative refractive indices differ in how they consider the medium. The formula for refractive index relates to Snell's Law and constant frequency.
-Difference between absolute and relative refractive indices. Absolute considers light coming from another medium, while relative considers the order of the mediums.
-Explanation of refractive index and how it relates to the speed of light in different mediums. The formula involves the ratio of speeds in different mediums.
-Relationship between refractive index formula and Snell's Law. The constant frequency in the formula ensures the speed of light remains consistent.
2:14:16 The video discusses the concept of refractive index and its calculation, emphasizing the importance of understanding the formula and shortcuts for solving related problems effectively.
-Refractive index explained through formulas and concepts. Understanding the relationship between frequency, medium, and wavelength.
-Absolute refractive index and its significance in calculations. Exploring the formula for refractive index and its application.
-Utilizing shortcuts for calculating refractive index efficiently. Demonstrating how to simplify calculations using shortcuts and practical examples.

kam ayega likh lo

[NTUtech]

Particle Nature Of Light
05:42 - The Wave Theory : EM Wave
07:45 - Ray Nature Of light
17:03 - Phenomenon Of Light : Reflection
19:19 - Laws Of Reflection
21:27 - Plan Mirror
21:39 - Image Formation By Plan Mirror
28:50 - Examples Of Lateral Inversion
40:25 - Important Terms : Spherical Mirrors
41:53 - Rules To Obtain Image
44:24 - Image Formation : Concave Mirror
54:52 - Image Formation : Convex Mirror
58:31 - Uses Of Mirrors
01:01:11 - Topic Sign Convention In Mirrors
01:05:33 - One Step Ahead : Formula
01:22:57 - Topic : Phenomenon Of Light : Refraction
01:26:09 - Laws Of Refraction
01:27:41 - Topic : Rules Of Refraction ( Transiting Media )
01:31:11 - When Refraction Does Not Occur !!
01:33:24 - Topic Refraction Through Glass Slab
01:38:23 - Topic Refraction Through Spherical Lenses
01:42:21 - Topic : Rules To Obtain Image
01:43:49 - Image Formation : Convex Lens
01:49:41 - Topic : Image Formation : Concave Lens
01:52:21 - Uses Of lenses
01:53:16 - Topic : One Step Ahead : Sign Convention In Lenses
01:53:55 - Topic : One Step Ahead : Formula
02:21:59 - Thank You !

[gygaming]

✨ Topics covered ✨

00:00 - Introduction
01:24 - Particle Nature Of Light
05:42 - The Wave Theory : EM Wave
07:45 - Ray Nature Of light
17:03 - Phenomenon Of Light : Reflection
19:19 - Laws Of Reflection
21:27 - Plan Mirror
21:39 - Image Formation By Plan Mirror
28:50 - Examples Of Lateral Inversion
40:25 - Important Terms : Spherical Mirrors
41:53 - Rules To Obtain Image
44:24 - Image Formation : Concave Mirror
54:52 - Image Formation : Convex Mirror
58:31 - Uses Of Mirrors
01:01:11 - Topic Sign Convention In Mirrors
01:05:33 - One Step Ahead : Formula
01:22:57 - Topic : Phenomenon Of Light : Refraction
01:26:09 - Laws Of Refraction
01:27:41 - Topic : Rules Of Refraction ( Transiting Media )
01:31:11 - When Refraction Does Not Occur !!
01:33:24 - Topic Refraction Through Glass Slab
01:38:23 - Topic Refraction Through Spherical Lenses
01:42:21 - Topic : Rules To Obtain Image
01:43:49 - Image Formation : Convex Lens
01:49:41 - Topic : Image Formation : Concave Lens
01:52:21 - Uses Of lenses
01:53:16 - Topic : One Step Ahead : Sign Convention In Lenses
01:53:55 - Topic : One Step Ahead : Formula
02:21:59 - Thank You !
Ache se padhna baccho

[FF_ARSH_TEAM]

1:57:05 >
v=15cm
m= -3/2= 1.5cm
Nature of images> Enlarged, real, and inverted
Position of image> beyond 2f2
m=hi/ho
-3/2=hi/2
-6=2hi
hi=-6/2= -3cm...

Thank you!

[Bhavyaa]

1:56:51
Diverging lens : concave lens
u= -15 cm( u is always negative)
f = -6 cm( concave lens has neg. f)
1/f = 1/v -1/u
1/-6 =1/v-(1/-15)
1/-6=1/v+1/15
1/-6-(1/15)=1/v
(30 will be the LCM)
1/v =-5-2/30
1/v=-7/30
(Reciprocal to get v)
v=30/-7 or -30/7
v=-4.28

m = v/u
m = -4.28/-15
m = 0.28

Since m is positive- virtual and real
And m is smaller than 1 so image will be small or diminished
TRICK TO CHECK m : CONCAVE LENS ALWAYS FORM SMALLER IMAGE

1:57:05
v=15 cm
m = -1.5
hi=-3 cm
Enlarged
Real
Inverted

[DigrajSinghRajput]

👑 King 👑 of physics (Rakshak sir) ❤ who agrees 👍

[Avanitrajput-ni]

Topics covered

00:00 - Introduction
01:24 - Particle Nature Of Light
05:42 - The Wave Theory : EM Wave
07:45 - Ray Nature Of light
17:03 - Phenomenon Of Light : Reflection
19:19 - Laws Of Reflection
21:27 - Plan Mirror
21:39 - Image Formation By Plan Mirror
28:50 - Examples Of Lateral Inversion
40:25 - Important Terms : Spherical Mirrors
41:53 - Rules To Obtain Image
44:24 - Image Formation : Concave Mirror
54:52 - Image Formation : Convex Mirror
58:31 - Uses Of Mirrors
01:01:11 - Topic Sign Convention In Mirrors
01:05:33 - One Step Ahead : Formula
01:22:57 - Topic : Phenomenon Of Light : Refraction
01:26:09 - Laws Of Refraction
01:27:41 - Topic : Rules Of Refraction ( Transiting Media )
01:31:11 - When Refraction Does Not Occur !!
01:33:24 - Topic Refraction Through Glass Slab
01:38:23 - Topic Refraction Through Spherical Lenses
01:42:21 - Topic : Rules To Obtain Image
01:43:49 - Image Formation : Convex Lens
01:49:41 - Topic : Image Formation : Concave Lens
01:52:21 - Uses Of lenses
01:53:16 - Topic : One Step Ahead : Sign Convention In Lenses
01:53:55 - Topic : One Step Ahead : Formula
02:21:59 - Thank You !

[SHAGNIK-oftd]

The lecture is about 2 hrs 22 mins. But it actually takes about 2 days to understand everything. To practice between the lectures... Thank you so much sir for helping us this much for free.

[poor_gaming]

Kon kon 2024 2025 ke half yearly ke liye padhne aaya hai