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The radii of curvature of a convex lens ...

The radii of curvature of a convex lens are 20 cm and 30 cm nd the refractive index of its material is 1.5 .How its nature nd focal length will change ,when it is immersed in a liquid of refractive index = 1.6?

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MODERN PUBLICATION-REFRACTION OF LIGHT-EXERCISE
  1. If the refractive index from air to glass is 3//2 adn that from air to...

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  2. A convex lens of refractive index 1.5 has a focal length of 18 cm in a...

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  3. The radii of curvature of a convex lens are 20 cm and 30 cm nd the re...

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  4. A convex lens of refractive index 1.5 is immersed in a liquid of refra...

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  5. Explain what happens ,when a convex lens of refractive index 1.2 is im...

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  6. A convex lens of refrative index 1.5 is immersed in a liquid of refrac...

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  7. An object is placed at 0.06 m from a convex lens of focal length 0.10 ...

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  8. An object is kept 0.2 m from a conex lens of focal length 0.15 m .Fin...

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  9. A 5.0 cm long needle is placed vertically at a distance 20 cm in front...

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  10. A convex lens of foal length 30 cm and a concave lens of focal length ...

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  11. A ocnverging bem of light forms of a sharp image on a screen. lens is...

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  12. An object is placed at a distance of 75 cm from a screen .Where should...

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  13. The image of needle placed 45 cm from a lens is formed on a screen pl...

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  14. If the distance between the screen and object is 50 cm and the displac...

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  15. A convex lens of focal lenght 20 cm is placed coaxially wih a convex m...

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  16. An object is placed at a distance 5 cm from a convex lens of focal len...

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  17. Where should an object placed from a conveging lens of focal length 20...

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  18. Calculate the distance at which an object should be placed in front of...

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  19. At what distance should be placed from a convex lens of focal length 1...

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  20. A lens placed at a distance of 20 cm from an object produces a virtual...

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