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If a symmetrical bi-concave thin lens is...

If a symmetrical bi-concave thin lens is cut into two identical halves, and they are placed in different ways as shown, then

A

three images will be formed in case `(i)`

B

tow inamges will be formed in the case `(i)`

C

the ratio of focal lengths in `(ii)`&`(iii)` is `1`

D

the ratio of focal lengths in `(ii)`&`(iii)` is `2`

Text Solution

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The correct Answer is:
a,c
N//a
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RESONANCE ENGLISH-GEOMATRICAL OPTICS -Exercise-2
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  2. An object O is kept infront of a converging lens of focal length 30 cm...

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  3. If a symmetrical bi-concave thin lens is cut into two identical halves...

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  4. A narrow beam of white light goes through a slab having parallel faces...

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  5. By properly combining two prisms made of different materials, it is po...

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  6. A plane mirror M is arranged parallel to a wall W at a distance l from...

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  7. A man washign to get a picture of a Zebra photographed a white donkey ...

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  8. An equiconvex lens of refractive index n(2) is placed such that the re...

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  9. In the figure shown , a point object O is placed in air on the princip...

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  10. An object is kept on the principal axis of a convex mirror of focal le...

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  11. A real object is placed infront of a convex mirror (focal length f). I...

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  12. A small air bubble is trapped inside a transparent cube of size 12 cm....

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  13. A parallel beam of light is incident normally on the flat surface of a...

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  14. The image of a white object in with light formed by a lens is usually ...

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  15. The image of a white object in with light formed by a lens is usually ...

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  16. The image of a white object in with light formed by a lens is usually ...

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  17. The image of a white object in with light formed by a lens is usually ...

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  18. The ciliary muscles of eye control the curvature of the lens in the ey...

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  19. The ciliary muscles of eye control the curvature of the lens in the ey...

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  20. The ciliary muscles of eye control the curvature of the lens in the ey...

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