Question

explain experimenraly how you find the focus point of a given converging mirror with a neat labelled diagram​

Answer 1

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Following are the ways to obtain the focal length of convex lens:

• The convex lens is thicker in the middle and thinner at the edges and is also known as the converging lens.
• The refracted rays from the parallel beam of light converge on the other side of the convex lens.
• If the image is obtained at the focus of the lens, the image would be real, inverted and very small.
• f is the focal length which is the difference between the optical centre of the lens and the principal focus.
• The image can be obtained on the screen as the image formed by the lens is real

Answer 2

Answer:

Following are the ways to obtain the focal length of convex lens:

• The convex lens is thicker in the middle and thinner at the edges and is also known as the converging lens.
• The refracted rays from the parallel beam of light converge on the other side of the convex lens.

If the image is obtained at the focus of the lens, the image would be real, inverted and very small.

• f is the focal length which is the difference between the optical centre of the lens and the principal focus.
• The image can be obtained on the screen as the image formed by the lens is real