1求一下三道题的物理答案1.A concave mirror has a focal length of 43 cm. What is the position of the object if the image is erect and is 3 times larger than the object? Answer in units of ___cm.2.An object is placed 5.7 cmin front of a concave mirror with a 28 cm focal lengt...
Yes, a concave mirror acts as a positive lens. The focal length of a concave mirror is positive, just like the focal length of a convex lens. There... See full answer below.Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a qu...
A concave lens with a more focal length. Two lens holders. One thick and one thin optical needle. A knitting needle. A half-metre scale. What is difference between concave mirror and concave lens? A concave mirror is opaque whereas aconcave lens is transparent. A concave mirror can form ...
3 The Focal Length Of A Concave Mirror Objective of the Experiment: To measure the focal length of a concave mirror. Introduction The followinof the mirror.
Plano-convex lenses arepositive focal length elements that have one spherical surface and one flat surface. These lenses are designed for infinite conjugate (parallel light) use or simple imaging in non-critical applications. These optic lenses are ideal for all-purpose focusing elements. ...
An object of size 7.0 cm is placed at 27 cm in front of a concave mirror of focal length 18 cm. At what distance from the mirror should a screen be placed so that a sharp focused image can be obtained? Find the size and the nature of the image. Q. Question 15 An object of si...
are called negative. Afocal lenses, for which Φ = 0, are also used; the focal length in these cases equals infinity. These lenses have neither a convergent nor a divergent effect on light rays but generate aberrations and are used in mirror-lens and lens objectives as aberration compensators...
Achromatic double glued lenses have more advantages than simple single lenses, including reduced color difference, improved off axis performance, and smaller focal spot. These dual lenses have a positive focal length and are optimized for infinite ...
Answer to: The focal length of a concave mirror that produces four times larger real image of an object held at 5cm from the mirror is... By...
When the object is placed between the focal point and the mirror, the image distance is positive and the image is virtual. When the object is placed beyond the focal point, the image distance is negative and the image is real. Can the image distance of a concave mirror be greater than ...