Light And Optics - SS1 Physics Past Questions and Answers - page 5

Microscopy is an important application of optics in medicine. Optical microscopes use lenses and illumination sources to magnify and resolve microscopic objects. Techniques such as brightfield microscopy, fluorescence microscopy, and confocal microscopy allow researchers and medical professionals to observe cells, tissues, and microorganisms with high resolution.

Optics is fundamental to photography and imaging devices. Lenses are the key components that focus light and form images. In cameras, lenses gather and converge light onto the image sensor or film, creating a focused image. The properties of lenses, such as focal length and aperture, determine aspects like depth of field and magnification.