Question

in a certain factor turning out optical lenses, there is a small chance of 1/500 for any 1 lens to be defective .The lenses are supplied in packets of 10. Use Poisson distribution to calculate the approximant number of packets containing: a) no defective b) 1 defective c) 2 Defective d)3 defective lenses respectively in a consignments of 20000 packets.

Answer 1

Answer:

Thorlabs' extensive line of optical lenses includes spherical, achromatic, aspheric, Powell, and cylindrical lenses, and are offered with or without antireflection coatings deposited on their surfaces. Substrate options include N-BK7, N-SF6, UV fused silica, calcium fluoride, magnesium fluoride, zinc selenide, germanium, and silicon. In addition, Thorlabs also offers Axicons and Air-Spaced Doublets.