Physics, asked by ankit0020yadav, 4 hours ago

Describe a method to measure the focal length of a convex lens ?​

Answers

Answered by Vαliαntprince
2
  • Stand with your back to the sun. Hold the lens so the sun shines through it and onto a sheet of paper. Move the lens towards and away from the paper until the dot of light is focused. The distance from the center of the lens to the surface of the paper is the focal length.
Answered by Anonymous
5

Answer:

Stand with your back to the sun. Hold the lens so the sun shines through it and onto a sheet of paper. Move the lens towards and away from the paper until the dot of light is focused. The distance from the center of the lens to the surface of the paper is the focal length.

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