Question

when we cut a convex lens along diameter into two parts, what is the focal length of parts?​

Answer 1

Answer:

The focal length for each turns out to be double the original focal length. You can solve this from combination lens equation:

1/f = 1/f1 + 1/f2.

Where the original focal length is f, and the focal length of each half is f1 and f2.

Since the two halves are indentical, then f1 = f2. So the equation becomes:

1/f = 1/f1 + 1/f1 = 2/f1. or f = f1 /2

Solving for one of the lens half: f1 = 2f.

Answer 2

Answer:

The focal length for each turns out to be double the original focal length. You can solve this from combination lens equation:

1/f = 1/f1 + 1/f2.

Where the original focal length is f, and the focal length of each half is f1 and f2.

Since the two halves are indentical, then f1 = f2. So the equation becomes:

1/f = 1/f1 + 1/f1 = 2/f1. or f = f1 /2

Solving for one of the lens half: f1 = 2f.

Explanation:

might help you

thanks for the question

purple you