In order to observe fine details of small objects in a microscope, should you use blue light or red light?
Answer to relevant QuestionsSeveral beverages, such as root beer, develop a “head” of foam when poured into a glass. Why is the foam generally white or light colored, whereas the liquid is dark? What are the powers of (a) A converging lens of focal length 20 cm and (b) A diverging lens of focal length – 50cm? A certain man has a far point of 150 cm. (a) What power must contact lenses have to allow him to see distant objects clearly? (b) If he is able to read a newspaper at 25 cm while wearing his contacts, is his near point ...When viewing an object with a magnifying glass whose focal length is 10 cm, a student positions the lens so that there is minimum eyestrain. What is the observed magnification? A compound microscope has an objective lens with a focal length of 0.50 cm and an eyepiece with a focal length of 3.25 cm. The separation distance between the lenses is 22 cm. (a) What is the total magnification? (b) ...
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