what is the sign convention in lens formula
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1
Dear mate!!!
The sign is taken as positive for a real object or image distance, and negative for a virtual object or image distance. Advantages: The merit of this convention is that it makes the lens equation simple and easy to remember. ... Some students get confused between the sign of (-1/u) and the sign of u itself.
Hope it helps you
The sign is taken as positive for a real object or image distance, and negative for a virtual object or image distance. Advantages: The merit of this convention is that it makes the lens equation simple and easy to remember. ... Some students get confused between the sign of (-1/u) and the sign of u itself.
Hope it helps you
Answered by
4
Heya Mate!!
Here is your answer!!
Sign Conventions for spherical Lenses:
According to new Cartesian sign convention, object is always placed on the left side of the lens
1. All the distance are measured from optical centre (c) of lens to the right side will be considered positive because they will be in the same direction of incident ray
2. On the other hand, distance measured from optical centre to the left side are considered as negative.
3. Focal length of convex lens is positive and concave lens is negative.
4. The distances measured upward and perpendicular to the principal axis are taken as positive.
5. The distance measured downward and perpendicular to the principal axis is considered negative.
@Rajasthani.....................
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