I believe this question uses the gaussian formula, but I’m not
sure how to solve it......
tourist is standing inside an aquarium's viewing tunnel surrounded by water. The ansparent wall of the tunnel has a circular cross-sectional shape with a radius of curvature m. His head is roughly at the center of the curvature. (See Fig. 1.) He saw a shark simming straight towards him and took out his camera to take a picture. He adjusted his 1 A trans hen the shark's head is in focus, he camera lens to focus on sceneries 6 m away, and w pressed the shutter water air Fig 1 Tourist in an aquarium tunnel taking a photo of a shark Assume the refractive index of water is nw-1.33. Answer the following questions: () 12 marks] What is the actual distance between the shark's head and him when he the shutter?