Two different type of lenses are placed on a sheet of newspaper. How will you identify them without touching?

Academic Physics NCERT Class 7

When two lenses are placed on a newspaper sheet then we can identify the lenses without touching them by the letters of the newspaper.

If the letters appear to be bigger or magnified, it is a convex lens.
If the letters appear to be smaller, it is a concave lens.

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Updated on: 10-Oct-2022

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