Answer:
1: It moves in straight line called Rectilinear Propagation of light.
2: It is stream of Corpuscles by Newton.
3: It is also Electromagnetic wave.
4: It have incredible speed in vacuum about 299792458 m s-1.
5: It's Frequency unchanged when passed from one medium to other.
6: It's Wavelength changed when passed from one medium to other.
7: It totally passed by transparent.
8: It partially passed by Translucent.
9: It not passed by Opaque at all.
10: It bounces back after hitting a polished surface.
11: It's speed decrease or increase when go from one medium to other medium.
12: It's Wavelength be very small.
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