In this experiment, you will investigate the deviation of a ray of light passing through a transparent block and determine a quantity called the refractive index $$\(n\)$$ of the block. Measure the length $$\(L\)$$ of HJ . $$\[ L= \]$$ ............................................... $$\(\mathrm{cm}\)$$ (ii) Use your value of $$\(l\)$$ from (c)(i) and $$\(L\)$$ from (f)(i) to calculate $$\(\frac{l}{L}\)$$. $$\[ \frac{l}{L}= \]$$ ..................................................... (iii) Calculate a value $$\(n\)$$ for the refractive index of the block. Use the equation shown. $$\[ n=0.866 \times \frac{l}{L} \]$$ = .....................................................

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