Question

You’ve been abducted by aliens! You wake up aboard a spaceship to find yourself completely immersed in a tank full of dense green goo. The aliens are scanning you with a laser aimed at the tank, as shown in the figure below. The tank has a shiny surface, but is also clear enough for you to see the room around you and the laser shining in. The incoming laser light ray hits the surface at an angle.

Tank full of goo

a) Draw in the perpendicular line as a dashed line, and label the angle of incidence.

b) Draw what happens to the incident ray when it hits the front surface of the tank, moves through it, and reaches the second interface at the back of the tank. (Don't worry about what happens when the ray exits the tank.)

c) Label all appropriate light rays and angles.

Answer 1

transmittel dray emergent say reflected say (Partial reflection) Sevacuum Vacuume i o hz Ž Incident ray & ;= Incident angle at first face 8 = Angle of refraction at first interface = Angle of increlence at second face e. Angle of emergence Ź