Mention two main points about light.
(N/A) There are two main points about light:
$(i)$ It travels with enormous speed,and its presently accepted value in a vacuum is $c = 2.99792458 \times 10^{8} \ m/s$. For practical purposes,$c = 3 \times 10^{8} \ m/s$,which is the highest speed attainable in nature.
$(ii)$ Light travels in a straight line.
$(i)$ It travels with enormous speed,and its presently accepted value in a vacuum is $c = 2.99792458 \times 10^{8} \ m/s$. For practical purposes,$c = 3 \times 10^{8} \ m/s$,which is the highest speed attainable in nature.
$(ii)$ Light travels in a straight line.
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