HOMEWORK-XII FOR SUNDAY 16TH JULY

1. Describe Foucault's method to determine the speed of light.
2. A beam of light is reflected by a rotating mirror onto a fixed mirror, which sends back to the rotating mirror from which it is again reflected and then makes an angle of 3.6º with the original direction. The distance between the two mirrors is 1 km and the rotating mirror is making 750 rev/s. Calculate the speed of light.           
3. Describe Millikan's oil drop experiment to determine the charge of an electron.
4. Why can't we use drops of water in place of oil in Millikan's oil drop experiment?
5. Differentiate between mechanical and non-mechanical wave.
6. Nepal radio broadcasts at 792 KHz. At what meter is radio Nepal tuned at your radio receiver?