A snowman stands 3 cm from the wall of a spherical glass ball, 5 cm of radius. The ball contains water whose refractive index is n=1.33. The wall of glass, whose refractive index is n=1.5 has a thickness of 3 mm. The observer will be placed to the right of the ball.

3 mm 5 cm Verre (n=1,5) Eau (n=1,33) 3 cm Observateur