Determining the slit width
The central maximum of a single-slit diffraction pattern has a width of 2.00 cm when measured on an observing screen 1.00 m away. If the illumination wavelength is 632.8nm what is the slit width?
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Calculate the overall magnification of a compound microscope that uses an objective lens with a focal length of 0.50 cm, an eyepiece with a focal length of 2.50 cm, and a distance of 18 cm between the two. (Assume a near point of 25 cm.)
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A small number of children and adolescents who are perceived to be popular, however, display a mix of positive and negative behaviors
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