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

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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Simply Easy Learning

Updated on: 10-Oct-2022

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