EFFECTS OF REFRACTION

EFFECTS OF REFRACTIONS: (a) The apparent depth of objects is lesser in denser media than the actual depth because of this, Swimming pool appears to be much smaller than it actually is. Explanation: Let us consider a object ‘O’ lying at the bottom of a beaker containing water. Two rays ‘OA’ and ‘OB’ from object […]

REFRACTION AT A SPHERICAL SURFACE

Let us consider, LMN represents a ‘convex’ spherical surface of radius of curvature ‘R’ of refractive index ‘’. Consider a point object ‘O’ on the principal axis situated in an optically rarer medium of . . A ray ‘OA’ incident at an angle ‘i’ is refracted along ‘AI’. Another ray ‘OM’ incident normally on the […]

COMPOUND MICROSCOPE

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. […]