MCQs are made in such a way that no important aspect is missed out. Any student taking a test and getting more than 90% marks will surely get similar marks in board exam. The ratio of size of the image to the size of object is called resolving power? In compound microscope the aperture of objective lens is very large compared to an eye piece lens? An effective telescope has always objective of long focal length? Single mode step index fiber system can be used for telecommunication of telephone signals?
The length of astronomical refracting telescope refracting telescope with convex lens as eye piece for normal adjustment is? Television signals are changed in light signals by means of? Magnifying ability of compound microscope can be increase by the use of ……? light? Michelson equation for the speed of light is …………? Light can be propagated from one place to another through optical fiber by a process of …………? refraction and total internal reflection? Total internal reflection hap pence when angle of incidence is greater than the …………? angle of the material?
The minimum distance at which an object can be seen distinctly is called? The linear magnification of the objective of compound microscope? In normal adjustment a magnifying power of astronomical telescope is? In a compound microscope magnification produce by objective is 5 and that produced by eye piece is 50? What is the total magnification produced by the microscope?An octagonal mirror is rotating with frequency f? Calculate the time of rotation of one of its side? Why do astronomers prefer reflecting telescope over refracting telescope?