Física volume único - Parte 118

r + r' = A $\Delta$ = i + i' - A Desvio mínimo A = 2r $\Delta$ = 2i - A A30 i = 38° n = $\sqrt{ 6 }$/2 A = 75° a) na * sen(38°) = n * sen(r) $\sqrt{ 6 }$/4 = $\sqrt{ 6 }$/2 * sen(r) sen(r) = 1/2 r = 30° r + r' = A 30° + r' = 75° r' = 45° b) r' = 45° n * sen(r') = na * sen(i') $\sqrt{ 6 }$/2 * $\sqrt{ 2 }$/2 = sen(i') sen(i') = $\sqrt{ 12 }$/4 sen(i') = $\sqrt{ 3 }$/2 i' = 60° c) D = i + i' - A D = 38° + 60° - 75° D = 38° + 60° - 75° D = 23° A31 A = 30° r + r' = A r' = A r' = 30° sen(r') = sen(L) sen(i') = 1 n * sen(r') = na * sen(90°) n/2 = 1 n = 2 A32 n = $\sqrt{ 3 }$ A = 60° A = 2r $\Delta$ = 2i - A r = A/2 r = 30° na * sen(i) = n * sen(r) sen(i) = $\sqrt{ 3 }$/2 i = 60° D = 2i - A D = 120° - 60° D = 60° A33 L tem que ser menor do que 45° sen(i) = sen(L) sen(r) = 1 n * sen(i) = na * sen(r) n * sen(L) = 1 sen(L) = 1/n sen(45°) sen(L) 1/n sen(45°) 1/n $\sqrt{ 2 }$/2 2 $\sqrt{ 2 }$n n 2/$\sqrt{ 2 }$ n $\sqrt{ 2 }$ V30 n = $\sqrt{ 3 }$ i = 60° A = 60° a) na * sen(60°) = n * sen(r) $\sqrt{ 3 }$/2 = $\sqrt{ 3 }$ * sen(r) sen(r) = 1/2 r = 30° b) r + r' = A 30° + r' = 60° r' = 30° c) n * sen(r') = na * sen(i') $\sqrt{ 3 }$/2 = sen(i') i' = 60° d) D = i + i' - A D = 60° + 60° - 60° D = 60° V31 A = 45° sen(L) = 1/n sen(45°) = 1/n 1/n = $\sqrt{ 2 }$/2 $\sqrt{ 2 }$n = 2 n = $\sqrt{ 2 }$ V32 A = 60° D = 30° D = i + i' - A D = 2i - A 30° = 2i - 60° 2i = 90° i = 45° A = 2r r = 30° na * sen(i) = n * sen(r) $\sqrt{ 2 }$/2 = n/2 n = $\sqrt{ 2 }$ R31 b) i = 50° i' = 40° A = 60° D = i + i' - A D = 50° + 40° - 60° D = 30° R32 D = 60° i = 60° i = i' r = r' D = 2i - A 60° = 120° - A A = 60° 2r = A r = 30° sen(i) = n * sen(r) $\sqrt{ 3 }$/2 = n/2 n = $\sqrt{ 3 }$ [a] R33 [b] R34 n = c/v nve = c/3 nvi = c/2 V - 1, 4 F - 2, 3 [d] R35 [e]