Question

10th 1.3 ki pome Kisi ne padhi Hai Kya muze samam nhi Aa rahi hai​

Answer 1

Answer:

The focal length of an optical system is a measure of how strongly the system converges or diverges light; it is the inverse of the system's optical power. A positive focal length indicates that a system converges light, while a negative focal length indicates that the system diverges light.

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