A gold fish looks out of an aquarium at a can of fish food. The can is 50 cm fro

Question

A gold fish looks out of an aquarium at a can of fish food. The can is 50 cm from the edge of the aquarium. In the answers, you can ignore the glass. Assume that the light passes directly frorn the air (nair 1) to the water ("water-133). Q30. To the gold fish, where does the can food appear to be? a) at 50 cm from the glass b closer than 50 cm from the glass c) farther than 50 cm from the glass 50 cm (al Q31. Which of the ray ! diagrams shown on the right supports your an- swer to the previous ques- tion? ld) I-) -a-1 :::: Q32. Can the fish see its own reflection in the glass (for instance, if the room is darker than the aquarium)? If yes, which ray diagram on the right corresponds to this situ- ation? If no, choose "(h) None of the above". in h) Noue of he above

Explanation / Answer

Q30. It appears farther. You can see that from the ray diagram of Q31.

Q31. f. The rays from the can will bend inwards on going from air to water.

Q32. d. As there is no other light ray, the fish will be able to see it's weak relection on the glass.

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