1) which one is a light source? a) moon b) sun c) pickle 2) what is light? a) it is a thing that is a wave b) Light is defined as the electromagnetic radiation with wavelengths between 380 and 750 nm which is visible to the human eye. 3) why light is useful? a) because with light we can see b) we can cook 4) which one is artificial light sorce ? a) sun b) torch 5) {\displaystyle \zeta (s)=\sum _{n=1}^{\infty }{\frac {1}{n^{s}}}={\frac {1}{1^{s}}}+{\frac {1}{2^{s}}}+{\frac {1}{3^{s}}}+\cdots } a) ? b) ? 6) what happens when light passes through a prism a) its collours will gonna appear b) nothing willl happen 7) what colour is light a) colours in the rainbow b) every colour 8) BONUS ROUND a) 32 b) 2

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