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"In between a fixed object and a fixed s...

"In between a fixed object and a fixed screen, a convex lens can cast two images at two different positions of the lens". Taking this to be a true statement show that product of the image sizes is equal to the square of the object size.

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R G PUBLICATION-RAY OPTICS AND OPTICAL INSTRUCMENTS-EXERCISE
  1. You are given a prism in which the two refracting surfaces are at 90^@...

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  2. A miopic person uses a lens of power -1.25D. What is his farpoint?

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  3. "In between a fixed object and a fixed screen, a convex lens can cast ...

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  4. Establish the lens maker's formula for a biconvex lens.

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  5. The focal lenghts of objectives and eyepiece of a telescope are 200cm ...

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  6. A pair of stars of actual separation one minute of are is observed wit...

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  7. Draw the schematic diagram of a Cassegrain telescope.

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  8. Derive the expression for the equivalent focal length of a combination...

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  9. Name the principle on which an optical fibre works.

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  10. An object is placed at the focus of concave lens. Where will its image...

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  11. What is paraxial?

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  12. Draw a neat diagram of image formed by a convex mirror.

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  13. What is lens maker's formula?

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  14. What is Snell's law.

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  15. What is critical angle? How is it related with refractive index?

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  16. What is the focal length of a plane mirror.

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  17. What is absolute refractive index and relative refractive index?

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  18. What is the technical applications of total internal reflection?

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  19. What is minimum deviation for an equilateral prism?

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  20. What is myopia? How it can be removed?

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