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A pile 4m high driven into the bottom of...

A pile 4m high driven into the bottom of a lake is 1m above the `
`water . Determine the length of the shadow of the pile on the bottom of the lake if `
` the sun rays make an angle of `45^@` with the water surface . The refractive index`
` if water is `4/3`. `

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`2.88 m`
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AAKASH SERIES-RAY OPTICS-PROBLEMS ( LEVEL-II)
  1. There is a dust particle in a glass slab of thickness t and refractive...

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  2. A parallel beam of light is incident on a rectangle transparent plate ...

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  3. A pile 4m high driven into the bottom of a lake is 1m above the wat...

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  4. A point object is placed at a distance of 20 cm from a glass slab, H=1...

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  5. A ray of light travelling in a rarer medium strikes a plane boundary b...

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  6. A small object of height 0.5 cm is placed in front of a convex surface...

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  7. A paperweight in the form of a hemisphere of radius 3.0 cm is used to ...

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  8. A convex glass lens ( mu = 1.5 ) produces a real image of an object. ...

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  9. Two plano-convex lens of glass of refractive index 1.5 have radii of c...

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  10. A rectangulat block of refractive index mu is placed on a printed page...

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  11. A ray is incident on prism at an angle i with normal. When it comes ou...

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  12. The dispersive power of crown and flint glasses are 0.02 and 0.04 resp...

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  13. Two prisms of identical geometrical shape are combined with their refr...

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  14. A thin prism of crown glass (mur=1.515, muv=1.525) and a thin prism o...

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  15. Two small angled prisms A and B deviate the blue rays by 7^@ and 9^@ a...

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  16. A beam of light converges towards a point O, behind a convex mirror of...

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  17. When an object is placed at a distance of 25 cm from a mirror, the mag...

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  18. An object is placed between a plane mirror and a convex mirror as show...

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  19. A plane mirror and a concave mirror are arranged as shown in figure an...

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  20. Describe the image in convex mirror, of the image of rod PQ in the pla...

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