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| Q. |
Lamberts law is related to – |
| A. | Reflection |
| B. | Refraction |
| C. | Interference |
| D. | Illumination |
| Answer» D. Illumination | |
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Explanation: Lambert's Law says that the intensity of emitted light from a surface is directly proportional to the cosine of the angle between the line of view and the normal to the surface. A Lambertian surface is a surface that follows this rule exactly. In practice, most surfaces are not perfectly Lambertian. A surface which obeys Lambert's law is said to be Lambertian, and exhibits Lambertian reflectance. Such a surface has the same radiance when viewed from any angle. |
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