Question

A 1m thick glass window with a refractive index of n=1.50 in the North Pole is covered by a 0.5m thick layer of transparent ice with a refractive index of n=1.31 on the outside. A security guard on the inside shines a flashlight at an angle of 30 degrees from the normal at the window. The n of air n=1.0003.

Part #1: Make a drawing of the system. Include the path of the light inside the room from the flashlight to the glass, inside the glass, inside the ice and outside the room.

Part #2: Explain how you would calculate the angle from the normal of the beam of light leaving the surface of the ice.

Part #3: Calculate the angle from the normal of the beam of light inside the glass window.

Part #4: Calculate the speed of light inside the speed of light in vacuum is 3.00 x 108 meters per second.

Answer 1

A1m thick glass window with a refractive index of n=1.50 in the North Pole is covered by a 0.5m thick layer of transparent ice with a refractive index of n=1.31 on the outside. A security guard on the inside shines a flashlight at an angle of 30 degrees from the normal at the window. The n of air n=1.0003. Part #1: Make a drawing of the system. Include the path of the light inside the room from the flashlight to the glass, inside the glass, inside the ice and outside the room. Part #2: Explain how you would calculate the angle from the normal of the beam of light leaving the surface of the ice. Part #3: Calculate the angle from the normal of the beam of light inside the glass window. Part #4: Calculate the speed of light inside the speed of light in vacuum is 3.00 x 108 meters per second. IX I you nasin30°= ng sind X 1/2 = 1.5 lind = 2 = 19.47° ng sind Misinß (3)) - b. Sna ni = 1.31 E im ng=1.5 = 1-3) Sinß => SinB = 1 2.62 na=1 ni finß = 3) d= 19.470 11.30 12.62 na Siny = 1x Siny = Siny => 19=30 4) 17, V = na: Vi => I = Mi Va Vi NI- My V 1-31 3x108 =y Vi= 2-3 x103 ms Vg = 2 X10 ??