CBSE Class 12-science Answered
numericals related
Asked by onam singla | 03 Feb, 2012, 08:57: PM
Expert Answer
Spherical Mirrors Lenses
1) Focal Length (f)
+ for concave mirrors + for a converging lens
- for convex mirrors - for a diverging lens
2)Object Distance (do)
+ if object is in front of the mirror (real object)
+ if the object is to the left of the lens (real object)
- if object is behind the mirror (virtual object)
- if the object is to the right of the lens (virtual object)
3) Image Distance (di)
+ if the image is in front of the mirror (real image)
+ for an image (real) formed to the right of the lens by a real object
- if the image is behind the mirror (virtual image)
- for an image (virtual) formed to the left of the lens by a real object
4) Magnification (m)
+ for an image that is upright with respect to the object
+ for an image that is upright with respect to the object
- for an image that is inverted with respect to the object
- for an image that is inverted with respect to the object
Answered by | 03 Feb, 2012, 11:00: PM
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