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The human brain has ~86 billion neurons, each connected to up to 7,000 others.
Did you know?
The human brain has ~86 billion neurons, each connected to up to 7,000 others.
Two thin lenses are of the same focal lengths (), but one is convex and the other one is concave. When they are placed in contact with each other, the equivalent focal length of the combination will be:
To solve this problem, we need to find the equivalent focal length of a combination of a convex lens and a concave lens placed in contact.Given:ā¢ Focal length of the convex lens ā¢ Focal length of the concave lens When two lenses are placed in contact, the formula for the equivalent focal length
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