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A thin biconvex lens is placed with its ...

A thin biconvex lens is placed with its principal axis first along a beam of parallel red light and then along a beam of parallel blue light. If the refractive indices of the lens for red and blue light are respectively 1.514 and 1.524 and if the radius of curvature of the faces are 30 cm and 20 cm, calculate the sepration of for red and blue light. If the focal length for the mean colour (yellow) is 23.1 cm, find the dispersive power of the material of the lens.

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PHYSICS GALAXY - ASHISH ARORA-GEOMETRICAL OPTICS-Unsolved Numerical Problems
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  2. The left end of a long glass rod of index 1.6350 is grounded and polis...

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  3. Focal length of a convex lense in air is 10cm. Find its focal length...

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  4. Find the distance of an object from a convex lens if image is two ti...

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

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  6. An object is placed 12 cm to the left of a diverging lens of focal len...

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  7. A solid glass sphere with radius R and an index of refraction 1.5 is s...

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  8. A glass sphere with 10 cm radius has a 5 cm radius spherical hole at i...

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  9. A source of light is located at double focal length from a convergent ...

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  10. A parallel beam of rays is incident on a consisting pf three thin lens...

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  11. A ray of light is incident on the left vertical face of glass cube of ...

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  12. One face of a prism with a refrective angle of 30^@ is coated with sil...

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  13. In an isosceles prism of prism angle 45^(@), it is found that when the...

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  14. An astronomical telescope with objective of focal length 100 cm and ey...

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  15. Figure shows a right angled prism ABC having refractive mu(g)=(3)/(2) ...

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  16. An equilateral prism deviates a ray through 40° for two angles of inci...

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  17. A ray of light strikes a glass slab of thickness t. (i) Prove that i...

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  18. A plano-convex lens has thickness 4cm. When places on a horizontal tab...

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  19. An image Y is formed of a point object x by a lens whose optic axis is...

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  20. A thin plano-convex lens.of focal length f is split into two halves : ...

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