LIGHT

LIGHT - MIND MAP

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LIGHT by Mind Map: LIGHT

1. OBJECTS

1.1. Translucent

1.1.1. light passes partially through them

1.1.1.1. eg- smoked glass, muddy water, tracing paper

1.2. Transparent

1.2.1. allow light to pass through them

1.2.1.1. eg- water, glass , air

1.3. Opaque

1.3.1. doesn't allow light to pass through them

1.3.1.1. eg- wood, chair, metals

2. BODIES

2.1. LUMINOUS

2.1.1. emit their own light

2.1.1.1. eg- sun, candles, glow worm

2.2. NON - LUMINOUS

2.2.1. which do not emit light by their own

2.2.1.1. eg- moon, earth, table

3. SOURCES

3.1. Natural

3.1.1. eg- sun, stars, jugnu

3.2. Artificial

3.2.1. eg- bulb , tube light, candle, lamp

4. RECTILINEAR PROPAGATION

4.1. Light always travel in a straight line

5. when path is changed

5.1. REFLECTION

5.1.1. When a ray of light hits a smooth polished surface, it bounces back

5.1.2. LAWS

5.1.2.1. ∠i = ∠ r

5.1.2.2. Incident ray, reflected ray and normal all lie in the same plane.

5.1.3. Types of Mirrors

5.1.3.1. CONCAVE

5.1.3.1.1. Converging mirror (Curved inwards)

5.1.3.1.2. Uses - searchlights, shaving mirrors, satellite dishes etc

5.1.3.2. CONVEX

5.1.3.2.1. Diverging mirror (Curved outwards)

5.1.3.2.2. Uses - rear view mirror in vehicles, reflector in street lamps etc

5.1.4. IMAGE

5.1.4.1. REAL

5.1.4.1.1. Actual intersection of light rays

5.1.4.1.2. Inverted

5.1.4.1.3. can be formed on screen

5.1.4.2. VIRTUAL

5.1.4.2.1. apparent intersection of light rays

5.1.4.2.2. Erect

5.1.4.2.3. Can't be formed on screen