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A source of yellow light placed in air i...

A source of yellow light placed in air is observed by a person swimming under water. If the wavelength of yellow light in air is 6000Å , then determine its velocity, wavelength and colour as observed by the person. Take ve locity of light in air `(c=3 xx 10^8 m//s^(-1))`

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`2.25 xx 10^8 m//s ,4500 Å ` yellow
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AAKASH SERIES-RAY OPTICS-PROBLEMS ( LEVEL-I)
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  2. The refractive index of denser medium with respect to rarer medium is ...

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  3. A source of yellow light placed in air is observed by a person swimmin...

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  4. In the arrangement shown in the figure a light ray is incident at an a...

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  5. A light ray is travelling from a denser medium into rarer medium. The ...

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  6. An optical fibre (mu = 1.72) is surrounded by a glass coating (mu =1.5...

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  7. A ray of light traveling in glass (mug = 3//2) is incident on a horiz...

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  8. Glycerine (mu = 1.4) is poured into a large jar of radius 0.2m to a de...

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  9. An object of size 3.0 cm is placed at 14 cm in front of a concave lens...

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  10. A concave - convex lens has faces of radii 4 cm and 3 cm respectively ...

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  11. If the angle of prism is 60^@ and the angle of minimum deviation is al...

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  12. A ray of light is incident at an angle of 60^@ on one face of a prism ...

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  13. An air bubble is seen inside a solid sphere of glass (n = 1.5) of 4.0 ...

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  14. A 35 mm film is to be projected on a 20 m wide screen situated at a di...

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  15. A small object area 6 cm xx 3 cm is placed (plane normal to principal ...

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  16. What is the focal length of a convex lens of focal length 30 cm in con...

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  17. To a real object, magnification and image distance graph is as shown i...

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  18. A ray of light is incident on the surface of a spherical glass paper-w...

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  19. The object distance 'u' and the image distance v from a convex lens va...

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  20. A point object O is placed at a distance of 20 cm from a convex lens o...

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