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For a given optical system, the principa...

For a given optical system, the principal axis is x-axis and coordinates of object are `(-30,+1,0)` and coordinates of image are `(+20,-2,0)` All coordinates are in cm.
If the optical system is a concave mirror, it is located at what point?

A

origin

B

`-80` cm

C

`-40/3` cm

D

`40/3 cm`

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The correct Answer is:
B
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