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A crane flying 6 m above a still clear w...

A crane flying 6 m above a still clear water lake sees a fish under water. For the crane the fish appears 6 cm below the water surface. How much deep should the crane immerse its beak to pick that fish?
For the fish, how much above the water surface does the crane appear?
R.I. of water =`frac(4)(3)`

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CHETANA PUBLICATION-OPTICS-EXERCISE
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  2. Explain refractive index using a plane glass slab.

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  3. A crane flying 6 m above a still clear water lake sees a fish under wa...

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  4. A glass slab of thickness 2.5 cm having refractive index 5//3 is kept ...

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  5. Explain Total internal reflection OR Under what conditionsistotal...

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  6. Name some applications based on Total Internal Reflection.

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  9. Write a note on periscope.

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  12. Derive an expression for refraction at a single spherical surface OR...

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  15. Starting from lensmakers equation explain how it gets modified in case...

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