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Find the position of the final image formed by the lens combination given in the figure

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30 cm to the right of the third lens
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(a) Using the ray diagram for a system of two lenses of focal lengths f_(1) and f_(2) in contact with each other, show that the two lens system can be regarded as equivalent to a single lens of focal length f, where (1)/(f)=(1)/(f_(1))+(1)/(f_(2)) Also write the relation for the equivalent power of the lens combination. (b) Determine the position of the image formed by the lens combination given in the figure.

In Figure., find the position of final image formed.

what is the position and nature of image formed by lens combination shown in figure ? (f_(1),f_(2) are focal lengths)

In Figure. , find the position of final image formed.

If the optic axis of convex and concave lenses are separated by a distance 5 mm as shown in the figure. Find the coordinate of the final image formed by the combination if parallel beam of light is incident on lens. Origin is at the optical centre of convex lens

A convex lens of focal length 20cm is placed coaxilly with a convex mirror of radius of curvature 20 cm. The two are kept 15 cm apart. A point object is placed 40 cm in front of the convex lens. Find the position of the image formed by this combination. Draw the ray diagram showing the image formation.

An illuminated point object O is kept 20 cm from a thin convex lens L_(1) of focal length 15 cm as shown below. A thin diverging lens L_(2) of focal length 25 cm is kept co - axial with the first lens and 35 cm from it, as shown in figure below : Find the position of the final image formed by this combination of lenses.

Find the position of the final image after three successive reflections taking the first reflection on m_(1) .

A convex lens of focal length 30 cm , a concave lens of focal length 120 cm , and a plane mirror are arranged as shown . For an object kept at a distance of 60 cm from the convex lens, the final image, formed by the combination , is a real image , at a distance of : |"Focal length" | = |"Focal length"| = 30 cm " " =120 cm

A point object O is placed at a distance of 15 cm from a convex lens L of focal length 10 cm as shown in figure below. On the other side of the lens, a convex mirror M is placed such that its distance from the lens is equal to the focal length of the lens. The final image formed by this combination is observed to coincide with the object 0. Find the focal length of the convex mirror.

AAKASH SERIES-RAY OPTICS-PROBLEMS ( LEVEL-II)
  1. A transparent cylinder of radius 2m has a mirrored surface on its righ...

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  2. A point object is placed on the optic axis of a convex lens of focal l...

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  3. A beam of light converges at a point P. Now a lens is placed in the pa...

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  4. A beam of light converges at a point P. Now a lens is placed in the pa...

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  5. The distance between two point sources of light is 24cm. Find out wher...

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  6. Focal length of a thin convex lens is 30 cm. At distance of 10 cm from...

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  7. Both object and convex lens are approaching each other along the princ...

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  8. A converging lens of focal length 12 cm and a diverging mirror of foca...

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  9. A converging lens of focal length 15 cm and a converging mirror of foc...

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  10. A convex lens of focal length 15 cm and concave mirror of focal length...

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  11. Magnification by a lens of an object at distance 10 cm from it is -2. ...

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  12. The curved surface of a concave spherical mirror with a radius of curv...

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  13. A thin equiconvex lens of glass ( mu = 1.5) with radius of curvature 4...

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  14. Two thin converging lenses are placed on a common axis, so that the ce...

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  15. An equiconvex lens of refractive index 1.5 and focal length 10 cm is h...

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  16. Variation of alternating current .l. with time .t. is shown in the gra...

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  17. A converging lens forms a five fold magnified image of an object. The ...

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  18. A plano-convex lens behaves as a concave mirror of focal length 30 cm ...

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  19. A point object is placed at a distance of 20 cm from a thin plano-conc...

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  20. Find the position of the final image formed by the lens combination gi...

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