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23 Nov 2019
4. (a) A tank containing methanol has walls 2.50 cm thick madeof glass of refractive index 1.550. Light from the outside airstrikes the glass at 41.3 degrees angle with the normal to theglass. Find the angle the light makes with the normal in themethanol.
(b) The tank is emptied and refilled with an unknown liquid.If light incident at the same angle as in part (a) enters theliquid in the tank at an angle of 20.2 from the normal, what is therefractive index of the unknown liquid?
4. (a) A tank containing methanol has walls 2.50 cm thick madeof glass of refractive index 1.550. Light from the outside airstrikes the glass at 41.3 degrees angle with the normal to theglass. Find the angle the light makes with the normal in themethanol.
(b) The tank is emptied and refilled with an unknown liquid.If light incident at the same angle as in part (a) enters theliquid in the tank at an angle of 20.2 from the normal, what is therefractive index of the unknown liquid?
