lab 4.1.1

# lab 4.1.1 - 4.1.1 The focal lengths for the different...

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The focal lengths for the different wavelengths of light that passed through lens B were fb = 15.4cm, fw = 15.5cm, fg = 15.8cm, fr = 16.1cm in order from least to greatest. Out of the three different focal lengths corresponding to the different wavelengths of light, the blue light had the closest focal length to white light. The difference was only off by a decimal place. Blue light has the shortest wavelength of the different colors and that is why it was closest in the focal length to the white light. = rm frfb = . . rm 16 1 cm15 4 cm = . rm 1 05cm = . nr 1 5146 = . nb 1 5280 1/f r = (n r – 1) (1/R 1 – 1/R 2 ) 1/f r = (1.5146 – 1) (1/R 1 – 1/R 2 ) (Radii of curvature can be neglected) 1/f r = (1.5146 – 1) f r = 1.9433 1/f b = (n b – 1) (1/R 1 + 1/R 2 ) 1/f b = (1.5280 – 1) (1/R 1 + 1/R 2 ) (Radii of curvature can be neglected) 1/fb = (0.5280) fb = 1.8939 f r /f b = 1.9433/1.8939 f r /f b = 1.0261 │r m – r e │ / r e x 100% │1.05 – 1.0261 │/ 1.0261 x 100% = 2.3292% Error

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lab 4.1.1 - 4.1.1 The focal lengths for the different...

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