KVPY2012PhysicsRay Optics
On a bright sunny day a diver of height h stands at the bottom of a lake of depth H . Looking upward, he can see objects outside the lake in a circular region of radius R . Beyond this circle he sees the image of objects lying on the floor of the lake. If refractive index of water is 4 / 3 , then the value of R is-
Options
- A3( H - h ) / 7
- B( H - h ) / 7 / 3
- C3 h 7
- D( H - h ) / 5 / 3
Correct answer
A. 3( H - h ) / 7
Step-by-step solution
R = h ^ ²-1