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`        A fish looking up through the water sees that the outside world is contained in a circular horizon. If the refractive index of water is 4/3 and th fish is 12cm below the surface of water, find the radius of the circle.`
3 years ago

Vikas TU
10337 Points
```							After makig the figure U would get the final relation astanthetha = r/hwhere thetha is the angle making with height h (perpendicular and the hypertenuse.)and this angle is also the TIR angle.Therfore from,sinthetha = 1/u = ¾thanthetha = 3/root(7)and r = 36/root(7)
```
3 years ago
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### Course Features

• 18 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions