Focal length explained: It tells us the angle of view (how much of the scene will be captured) and the magnification (how large individual elements will be). The longer the focal length (eg. 100mm), the narrower the angle of view and the higher the magnification. Ideal for wildlife or the moon 🦅🌔. The shorter the focal length (eg. 13mm), the wider the angle of view and the lower the magnification.Ideal to take interior photos of a house🏡🎥. | Nas Academy

Determination Of Focal Length Of Concave Mirror And Convex Lens - BYJU'S

In a telescope the focal length & aperture of objective are larger than those of eyepiece while in microscope the focal length & aperture of objective are smaller than those of eyepiece .Thus in principle the inverted telescope should act as a microscope .Is it possible in practice ? - 95kekl00

53 . μ=1.40(2) μ=1.33(4) μ=1.50 diameterd having focal length... | Filo

Answer the following questions:(a)The angle subtended at the eye by an object is equal to the angle subtended at the eye by the virtual image produced by a magnifying glass. In what sense then does a magnifying glass provide angular magnification?(b) In viewing through a magnifying glass, one usually positions ones eyes very close to the lens. Does angular magnification change if the eye is moved back?(c) Magnifying power of a simple microscope is inversely proportional to the focal length of th