Spherical mirrors and its Source: https://gifer.com/en/DLBN Components Episode 1 with ABHISHEK K R B.Tech - Aerospace, Alliance University CBSE Expert | Inventor of RocketPro 6+ Years Teaching Exp | Mentored more than 5000 students Helped 1000s of students get 10 CGPA in CBSE X
LIGHT Spherical mirror and its components Standard Incident Rays Ray Diagrams of Concave & Convex Mirrors Sign Convention of Mirrors & Mirror Formula Refraction and Refractive Index Ray Diagrams of Concave & Convex Lenses Sign Convention of Lenses & Lens Formula Numericals on Mirrors, Lenses & Refractive Index
LIGHT Spherical mirror and its components Standard Incident Rays Ray Diagrams of Concave & Convex Mirrors Sign Convention of Mirrors & Mirror Formula Refraction and Refractive Index Ray Diagrams of Concave & Convex Lenses Sign Convention of Lenses & Lens Formula Numericals on Mirrors, Lenses & Refractive Index
Q1. The change in path of light after striking a mirror is called A B Reflection of light Rectilinear propagation of light C D Lateral inversion Dispersion
Q1. The change in path of light after striking a mirror is called A B Reflection of light Rectilinear propagation of light C D Lateral inversion Dispersion
Q2. Which of the following states the laws of reflection? A Angle of incidence = Angle of reflection B Incident ray, reflected ray, and normal ray all lie in the plane of incidence C Angle of incidence = Angle of refraction D Both A and B
Q2. Which of the following states the laws of reflection? A Angle of incidence = Angle of reflection B Incident ray, reflected ray, and normal ray all lie in the plane of incidence C Angle of incidence = Angle of refraction D Both A and B
Q3. Size of an object is 5 feet 3 inches. What will be the size of the image formed by a plane mirror? A B 5 feet 5 feet 3 inch C D 6 feet 6 inch 10 feet 6 inches
Q3. Size of an object is 5 feet 3 inches. What will be the size of the image formed by a plane mirror? A B 5 feet 5 feet 3 inch C D 6 feet 6 inch 10 feet 6 inches
Why do we need spherical mirrors?
Look at the side mirror of a car
Is the size of the image same as actual size of the object?
So, Can this be a plane mirror?
So, Can this be a plane mirror?
Spherical mirrors
Spherical mirrors Spherical mirrors are formed from spherical glasses.
A part of the sphere is taken out
Curved Curved inward outward Spherical mirror has two surfaces
?Is this a mirror now
How can we convert this glass piece to mirror?
By silver coating any of the sides
Outside coating ● Reflection inside
Inside coating ● Reflection outside
Now let’s see how different both the surfaces are Inside coating Outside coating
Reflection inside Coating outside Concave Mirror Concave mirror is a mirror in which the reflective surface is curved inward.
Coating inside Reflection outside Convex Mirror Convex mirror is a mirror in which the reflective surface is curved outward.
1. Components of a spherical mirror 1. Centre of Curvature (C) 2. Radius of Curvature (R) 3. Aperture 4. Pole (P) 5. Principal axis
1. Centre of Curvature (C) CC Centre of the sphere from which mirror is taken out.
The centre of curvature of a concave mirror is A B In front of the mirror Behind the mirror
The centre of curvature of a concave mirror is A B In front of the mirror Behind the mirror
The centre of curvature of a convex mirror is A B In front of the mirror Behind the mirror
The centre of curvature of a convex mirror is A B In front of the mirror Behind the mirror
2. Radius of Curvature (C) RR CC Distance of any point on the mirror from the centre of curvature
3. Aperture Aperture Aperture is the entire reflecting surface area
4. Pole PP The mid point of the aperture is called pole
5. Principal axis The straight line passing through the centre of curvature and pole is called Principal axis
Aperture RR C PC P Principal axis
VIP
Q1. Which one do you think represents concave mirror? AB
Q1. Which one do you think represents concave mirror? AB
Q2. If the inner curve of a spherical glass is silvered then it is a A B Concave Mirror Convex mirror C D Plane mirror Can’t Say
Q2. If the inner curve of a spherical glass is silvered then it is a A B Concave Mirror Convex mirror C D Plane mirror Can’t Say
Q3. Which of these terms is not part of a spherical mirror? A B Centre of Radius of Curvature curvature C D Aperture Incident Ray
Q3. Which of these terms is not part of a spherical mirror? A B Centre of Radius of Curvature curvature C D Aperture Incident Ray
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