list of important formulas and concepts from the Class 10 chapter Light 1. Mirror Formula: 1/f = 1/v + 1/u 2. Magnification (Mirror): m = h₂/h₁ = -v/u Where: h₂ = Height of image h₁ = Height of object v = Image distance u = Object distance 3. Lens Formula: 1/f = 1/v - 1/u 4. Magnification (Lens): m = h₂/h₁ = v/u 5. Power of Lens: P = 100 / f (in cm) = 1 / f (in meters) Where: P = Power in diopters (D) f = Focal length in meters 6. Refraction Formula (Snell's Law): n₁sin(i) = n₂sin(r) Where: n₁ = Refractive index of medium 1 n₂ = Refractive index of medium 2 i = Angle of incidence r = Angle of refraction 7. Refractive Index: n = c/v Where: c = Speed of light in vacuum v = Speed of light in the medium 8. Lens Maker's Formula: 1/f = (n - 1) [(1/R₁) - (1/R₂)] 9. Critical Angle and Total Internal Reflection: sin(C) = 1/n Where: C = Critical angle n = Refractive index of the medium 10. Relation Between f and R (Spherical Mirrors): f = R/2 I HOPE THIS WOULD HELP
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list of important Class 10 Maths formulas.
1. Quadratic Equations:
x = (-b ± √(b² - 4ac)) / 2a
2. Arithmetic Progression (AP):
n-th term: aₙ = a + (n - 1)d
Sum of n terms: Sₙ = (n / 2) [2a + (n - 1)d]
3. Triangles:
Similarity condition: a²/b² = c²/d²
Pythagoras theorem: a² + b² = c²
4. Coordinate Geometry:
Distance: d = √((x₂ - x₁)² + (y₂ - y₁)²)
Midpoint: M = ((x₁ + x₂) / 2, (y₁ + y₂) / 2)
Area of triangle: Area = 1/2 [x₁(y₂ - y₃) + x₂(y₃ - y₁) + x₃(y₁ - y₂)]
5. Trigonometry:
sin θ = Opposite / Hypotenuse
cos θ = Adjacent / Hypotenuse
tan θ = Opposite / Adjacent
Identities:
1. sin²θ + cos²θ = 1
2. 1 + tan²θ = sec²θ
3. 1 + cot²θ = csc²θ
6. Circles:
Length of tangent: √(r² - d²), where r is the radius and d is the distance from the center to the external point.
7. Surface Areas and Volumes:
Sphere:
Surface area = 4πr²
Volume = (4/3)πr³
Cylinder:
Surface area = 2πr(h + r)
Volume = πr²h
Cone:
Surface area = πr(l + r)
Volume = (1/3)πr²h
8. Probability:
P(E) = (Number of favorable outcomes) / (Total outcomes)
9. Statistics:
Mean: Mean = Σfᵢxᵢ / Σfᵢ
Median: Median = L + [(N/2 - CF) / f] × h
Mode: Mode = L + [(f₁ - f₀) / (2f₁ - f₀ - f₂)] × h
I HOPE THIS HELPS
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list of important formulas and concepts from the Class 10 chapter Light
1. Mirror Formula:
1/f = 1/v + 1/u
2. Magnification (Mirror):
m = h₂/h₁ = -v/u
Where:
h₂ = Height of image
h₁ = Height of object
v = Image distance
u = Object distance
3. Lens Formula:
1/f = 1/v - 1/u
4. Magnification (Lens):
m = h₂/h₁ = v/u
5. Power of Lens:
P = 100 / f (in cm) = 1 / f (in meters)
Where:
P = Power in diopters (D)
f = Focal length in meters
6. Refraction Formula (Snell's Law):
n₁sin(i) = n₂sin(r)
Where:
n₁ = Refractive index of medium 1
n₂ = Refractive index of medium 2
i = Angle of incidence
r = Angle of refraction
7. Refractive Index:
n = c/v
Where:
c = Speed of light in vacuum
v = Speed of light in the medium
8. Lens Maker's Formula:
1/f = (n - 1) [(1/R₁) - (1/R₂)]
9. Critical Angle and Total Internal Reflection:
sin(C) = 1/n
Where:
C = Critical angle
n = Refractive index of the medium
10. Relation Between f and R (Spherical Mirrors):
f = R/2
I HOPE THIS WOULD HELP
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Me
Mein 480
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February se pehle 10 din kya karna hai bata do.
Sample Papers
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Gap days ke liye video aega@@gamingworld6540
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Final revision book kaisa h.
Industrialisation
Sir bahut acche badhate ho
Bhaiya mene book order kardiya
Tum jo bole vo karke dikaunga
Please artificial intelligence ka important questions bathadho, mei aapke upar bahut yekin raka hu❤❤❤❤❤❤
Bahut bhadiya bhai
Bahut accha
Sir computer information technology code 402 bhi include kar lo sir
Sir Formula Sheet Bhejdo!
First comment
Nice video 👍
Who is in rbse 10 th English medium
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Sir tell me ki before 1 or 2 days of exam science mein kya padhe