Question
Explain the terms for a convex lens : Optical centre
✓
Answer
- The central point of the lens, on the principal axis of the lens, is called the optical centre of the lens.
- A ray of light through the optical centre passes without deviation.
- Normally, it is denoted by $'O'$.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Explain the achievements (merits) of Mendeleev’s periodic table.
Find the current drawn from the battery by the network of four resistors shown in the figure.
Give two points of differences: $DC$ (Direct Current) and $AC$ (Alternate Current)
→→
In a voltmeter there are 20 divisions between 0 mark and 0.5 V mark. Calculate the least count of the voltmeter.
State the common characteristics of acids and bases.
What type of changes are observed during chemical reaction?
What happens to the image distance in the eye when we increase the distance of an object from the eye?
If a woman is using a copper-T will it help in protecting her from sexually transmitted diseases?
What are refractive defects of vision? Why these defects arise?