Question:
What is the approximate radius of the central bright
Last updated: 6/10/2023
![What is the approximate radius of the central bright](https://media.kunduz.com/media/sug-question-candidate/20210521042729381766-3437746.jpg?h=512)
What is the approximate radius of the central bright diffraction spot of light of wavelength 0 5 m if focal length of the lens is 20cm and radius of aperture of the lens is 5cm 1 1 22 m 3 4 22 m 2 2 30 m 4 6 23 m