Magnification ofa convex mirror is always positive, but that of a concave mirror may be both positive or negative . This magnification can tell us about the nature of the image based on the sign itself. If the ratio is negative then the image is real and inverted. Can microscope magnificatio...
Write down a formula for the magnification produced by a concave mirror (a) in terms of height of object and height of image (b) in terms of object distance and image distance - The formula for the mag...
Why is it important to calculate the diameter of the field when first using the microscope? Why are glasses with convex lenses used to correct hyperopia? Why is it helpful for a microscope to be parfocal? Why is a positive power lens used to co...
In this case, the front lens group GF has a negative single lens element L11 with a concave surface facing the object side at the most object-side position and a positive single lens element L12 at the most image-side position. In the front lens group, only the second lens element from...
The formula for magnification m of a lens is : Avu B−vu Cuv D−uvSubmit If the magnification of a lens has a positive value, the image formed is: Ainverted Breal and inverted Creal DVirtual and erectSubmit (a) The linear magnification of a concave lens is always positive. Why?
positive lenses and one negative lens which has a large- curvature concave surface on the image side in order from the object side, the 4th group consists of one biconvex lens, and the 3rd or 4th group includes at least one lens with an aspherical surface or is made of a heterogeneous ...
;CONSTITUTION: This finder is the variable power finder consisting of three groups of lenses of a concave lens 2 that is a first group, a convex lens 3 that is a second group, and a concave lens 4 that is a third group in order from an object side, and in which the switching ...
The projection optical system is a modified Wynne-Dyson system capable of imaging a large field over both a narrow and a broad spectral range. The projection optical system includes a positive lens group arranged adjacent to but spaced apart from a concave mirror along the mirror axis on the ...
Answer to: A camera is equipped with a lens with a focal length of 31 cm. When an object 1.0 m (100 cm) away is being photographed, what is the...
In this case, the front lens unit has a negative single lens element with a concave surface facing the object side at the most object-side position and a positive single lens element at the most image-side position. In the front lens unit, only the second lens element from the image ...