Lamberts law is related to
1). Reflection
2). Refraction
3). Interference
4). illumination
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1. Energy that is produced commercially from coal is called
3. Which of the following circuit elements is used to block DC in an electronic circuit
4. Which of the following colour of light deviates least through the prism?
5. The snow on the mountains does NOT melt all at once when it is heated by the sun because:
6. In the atmosphere ultraviolet rays are absorbed by
7. If cream is removed from milk, its density
8. Soap bubble attains spherical shape due to ________
9. Which of the following cannot be used for making lenses?
10. The number of waves per second in a sound is called ________ of that sound.