Question

14) A glass prism with an index of refraction of 1.53 sits on a horizontal surface, as shown. A ray of light traveling horizontally, enters the prism on its vertical face, as shown. If the labeled angle is O= 470, then will there be total internal reflection when the light ray strikes the slanted face of the prism? Show your work IDENTIFY: Fill in the blanks with "vertical", "horizontal","zero" or "90". The normal to the vertical face of the prism is The angle of incidence at the vertical face is degrees PLAN: Under what conditions is there total internal reflection? Choose the best answer ( When the angle of incidence is greater than or equal to the critical angle for total internal reflection When the angle of incidence is less than the critical angle for total internal reflection ( ) When the angle of incidence is equal to the critical angle for total internal reflection SOLVE: Solve the problem. INTERPRET: Fill in the blanks with higher" or "lower" and "toward" or "away from". (There is just one correct answer.) Total internal reflection relies on the fact that when light traveling in a particular medium enters another medium with a refractive index, the refracted light bends the normal

Answer 1

Tao at P for TIR sin (90-d) = h 1453 40-42 40.8° $249-2° for theident de 49.2° TIR will happen for i> (90-0) = 40.80 TIR will happen. or for 0 < 492; TIR will happen. Ogien=47. Its <492 Yes Tir will happen

Identify Horizontal oº PLAN Ano. A