How would you Describe the Image Formed by a Plane Mirror Reflection from the Plane Mirror Relation between the distances of the object and the image from the plane mirror is that they are equal. To verify this, consider the geometrical construction shown in figure. Rays OP and OD, starting from the object O, fall on the mirror. The ray OP is perpendicular to the mirror … [Read more...] about How would you Describe the Image Formed by a Plane Mirror
What do you mean by Total Internal Reflection? The inside surface of water can act like a perfect mirror as shown in Figure. This happens when the light rays strike the surface of the water in such a way that it reflects back into the water. The light rays are said to be reflected internally. This phenomenon is known as total internal reflection. It occurs only … [Read more...] about What do you mean by Total Internal Reflection?
Numerical Methods In Lens (A) Lens Formula Definition: The equation relating the object distance (u), the image distance (v) and the focal length (f) of the lens is called the lens formula. Assumptions made: The lens is thin. The lens has a small aperture. The object lies close to principal axis. The incident rays make small angles with the lens surface … [Read more...] about Lens Formula & Magnification – Lens Power
What is the Law of Reflection of Light? First law : The incident ray, the reflected ray and the normal at the point of incidence, all lie in the same plane. Second law : The angle of reflection (∠r) is always equal to the angle of incidence (∠i). i.e., ∠r = ∠i (For normal incidence, i = 0, r = 0. The ray is reflected back along normal). In figure the image of an … [Read more...] about What is the Law of Reflection of Light?
Refraction Of Light Through A Glass Slab Refraction through a rectangular glass slab and principle of reversibility of light: Consider a rectangular glass slab, as shown in figure. A ray AE is incident on the face PQ at an angle of incidence i. On entering the glass slab, it bends towards normal and travels along EF at an angle of refraction r. The refracted ray EF is … [Read more...] about Explain Refraction Of Light Through A Glass Slab