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This question concerna a symmetrical len...

This question concerna a symmetrical lens shown, along with its two focal points. It is made of plastice with `n=1.2` and has focal length f. Four different regions are shown:
Here,
A. `-oox lt -f` B. `-f lt x lt 0`
C. `0 lt x lt f` D. `f lt x lt oo`

Q. A second lens is now placed adjacent to the first in contact with it. The new lens is concave, with a focal length `f=-3f`. What is the focal length of the two-lens system? Treat the lenses as thin.

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This question concerns a symmetrical lens shown, along with its two focal points. It is made of plastic with n=1.2 and has focal length f. Four different regions are shown: A. -oo lt x lt -f B. -f lt x lt 0 C. 0 lt x lt f D. f lt x lt oo A second lens is now placed adjacent to the first in contact with it. The new lens is concave, with a focal length f=-3f . In what region does the focal length of the two-lens system lie? Treat the lenses as thin.

This question concerna a symmetrical lens shown, along with its two focal points. It is made of plastice with n=1.2 and has focal length f. Four different regions are shown: Here, A. -oox lt -f B. -f lt x lt 0 C. 0 lt x lt f D. f lt x lt oo Q. If incident rays are converging, then in which region does the image appear?

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