2.Are sound and light both forms of energy.
3.what are speeds of sound and light in air
4.why can light travel in vaccum whereas sound cannot travel
5.what types of waves present in sound and light waves
6.show with an activity sound cannot travel in vaccum
7.what are differences between light and sound
8.what are properties of light and sound
9.what is meant by rectilinear propogation of light
10.why can we see light firat then sound of a thunderstorm
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