Question

write all the factors of the following -13/7 m^2 n^2 p

Please give me correct answer with full explanation
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Answer 1

Answer:

The M2 factor of a laser beam limits the degree to which the beam can be focused for a given beam divergence angle, which is often limited by the numerical aperture of the focusing lens. Together with the optical power, the beam quality factor determines the brightness (more precisely, the radiance) of a laser beam.