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Sample Problem 1: A beam of light going through a medium with an index of retraction of 1.14 has an angle of incidence of 48 with another medium. If the light wave is at a new angle of 39. Sample Problem 2: A ray at light goes from air with an index of refraction at 1.0 to a drop or rain with an angle of incidence of 49. What is the angle of refraction of the color green what is the index of refraction for the second medium? of light? Refer to table 1 to get the indices of refraction at various wavelengths. Given: Solution: . . . .. Gwen: Solution: "I: 1.14 11151119, 11.51 9,. \"r = (1 14) int-13 )1 . . . _ lnG'J') = ' n =1.0 nsm sms Sine (1.0)(5 sine. =43" sins. s: a. QM\") "' ' 1: Err I 1.335 . _ o . 51119. = 49\" 11,. $1319.. _ 39 11.131119: hr = 1.346 sins... = ? nisint 51116, = 0.56 or 0.57 n.= ? smr = nr = . m... = 1.335 \""9? n. ACTIVITY: Solve the iollowing problem. Reterto table 1 to get the indices of refraction at various wavelengths (colors). Show your solutions. Table 1. Index of Refraction n in Selected Media at Various Wavelengths mm Dranetslnnm Vallawtsaonml Violet 410nm mm mm 2.417 mm 2.453 1.512 1.514 .131- 1.519 1.524 m 1.552 1.667 polystyrene 1.433 1.490 1.492 1.493 1.499 1.506 Qua rtz. fused 1.455 1.456 1. 453 1.459 1.462 1.468 The combined effects of reection. refraction. and dispersion can produce beautiiul rainbows from a sprinkler. Tiny drops of water act like a prism. splitting light into individual colours depending on their wavelength. It a beam of light from air goes through a water droplet with an angle of incidence of 51. what would be the refractive angle of these dispersed colours: Blue. Orange, Yellow