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| Pregunta | Respuesta |
| What types of light exist? | Natural- sun Artificial- candles, bulbs. |
| What is Incandescence light? | Light given off because it is very hot. (burning off rules such as wood gas...) |
| Electromagnetic spectrum... | Radio waves, microwaves, infrared waves, visible light, ultraviolet waves, x-eays, gamma rays (longest to shortest waves. |
| What part of the ES can we see? | Visible light. |
| What is the order of the colours? | Red orange yellow green blue violet. |
| What is the law of reflection? | The incidend ray, reflected ray and the normal ray lie in the same plane. The angle of incidents is equal to the angle of reflection. |
| What kind of image is formed in Plane mirrors? | Virtual Image (Behind mirror) |
| What does 'C' stand for? | Centre of curvature |
| What does 'F' stand for? | Focal point. |
| Give an example of a concave mirror? | Makeup mirror |
| Convex mirror example? | Parking garage |
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