Question

You are playing a video game in which you're chained to one spot and you hear a dragon approaching. A light-activated switch that would open your chains is located in the sealed cavern shown in Figure P18.17. You have a laser cannon that you can fire through the small hole, but from your present position the laser beam will miss the switch. Fortunately, you possess a magical power that will let you momentarily fill with water either the cavern or the room in which you're chained. Can you use your power to release your chains in time to flee from the dragon? If so, what will you do? If not, why not?

Answer 1

yes , will uese power

because if whole tank filled with power wavelenght of laser will decrease

lambda in any medium = lambda/n

here n = refrective index

by this lambda will lower and it will hit the switch