Write the sign convention for spherical lenses.
Answer (1)
7th Dec, 2021
- The optical center of the lens is taken into account for the measurement of all distances.
- If distances are measured based on the direction of incident light, they are considered negative.
- If distances are measured in the same direction as the incident light, they are considered positive.
- If the heights are measured upward and perpendicular to the principal axis, they are considered positive.
- If the heights are measured downward and perpendicular to the principal axis, they are considered negative
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