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What type of lens is a tumbler filled wi...

What type of lens is a tumbler filled with water ?

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A tumbler filled with water behaves as a double convex lens.
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PRADEEP-RAY OPTICS-Very Short Answer (b)
  1. What is the cause of refraction of light ?

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  2. What is critical angle for a material of refractive index sqrt(2) ?

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  3. A beam of light is converging towards a certain point. A parallel side...

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  4. What is the basis of an optical fibre ?

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  5. Determine refractive index of a substance if critical angle is 45^@.

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  6. What is the ratio of velocities of two light waves travelling in vacuu...

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  7. What type of lens is a tumbler filled with water ?

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  8. What type of lens is an air bubble inside water ?

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  9. a lens of glass is immersed in water. How is power of lens affected ?

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  10. a convex lens forms a virtual image of an object. What is the position...

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  11. An object is placed at the focus of a concave lens. Where will be imag...

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  12. A glass lens of refractive index 1.45 when immersed in a transparent l...

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  13. Two concave lenses each of focal length 30 cm are placed in contact. W...

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  14. Two thin lenses of power + 6 D and - 2 D are in contact. What is the f...

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  15. What is the basis of an optical fibre ?

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  16. what is the deviation produced in ray passing through optical centre o...

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  17. A lens forms a virtual, erect and diminished image whatever be the po...

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  18. Define one dioptre of power of a lens.

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  19. What is focal length of a lens of power 2.5 D ?

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  20. What is total magnification of three lenses of magnification 2, 3, 4 i...

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