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If final image after two refractions thr...

If final image after two refractions through the lens and one reflection from the mirror forms at the same point O. Refrative index of the material of the lens `mu=3//2`. Then find d.

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`(1)/(f)=(mu-1)((1)/(R_(1))-(1)/(R_(2)))=(1)/(40)`
`(1)/(v)-(1)/(u)=(1)/(f)rArr (1)/((d-30))-(1)/((-80))=(1)/(40)`
`rArrd=110cm`
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CENGAGE PHYSICS ENGLISH-GEOMETRICAL OPTICS-Exercise1.7
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  2. In Figure., find the position of final image formed.

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  3. In Fig. what should be the value of d so that image is formed on the ...

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  4. In Fig,, if the image of object O has to coincide with itself, then w...

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  5. A convex lens of focal length 20cm is placed 10cm away from a second ...

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  6. When an object is placed at the proper distance ot the left of a conve...

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  7. A telephoto combination consists of convex lens of focal length 30cm a...

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  8. A convex lens is cut in half along its principal axis and the two halv...

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  9. A plano-convex lens is silvered on its plane side. The radius of curva...

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  10. A convex lens of focal length 10cm is placed 30 cm in front of a secon...

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  11. A concave mirror of focal length 30 cm is placed on the flat horizont...

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  12. The convex side of a thin concavo-convex lens of glass of refractive i...

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  13. The source is placed 30 cm from a convex lens which has a focal length...

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  14. If final image after two refractions through the lens and one reflecti...

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  15. A point object O is placed at a distance of 20 cm from a convex lens o...

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  16. The focal length of a thin convex-lens is 30cm. At a distance of 10 cm...

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  17. A plano-convex glass lens (mu(g)=3//2) of radius of curvature R=10cm i...

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  18. On a horizontal plane mirror, a thin equiconvex lens of glass is place...

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  19. A pin is placed 10cm in front of a convex lens of focal length 20cm, m...

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  20. A convex lens of glass (mu=1.5) is formed by combining two surfaces of...

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