The visual angle is maximum for unaided eye, when the object is placed at near point. h – Size of the object. D – The least distance for clear vision. This angle can be further increased, if a converging lens of short focal length is placed just in front of the eye. Here, lens acts […]
CONSTRUCTION OF COMPOUND MISCROSCOPE It consists of two lenses where one lens is compounding the effect of other. The lens close to object is called objective lens (OL) while other lens close to eye is called eye – piece. The objective has a smaller aperture and smaller focal length than those of the eye piece. […]