Kitab Nagri

Definition of Refractive index in Physics   The ratio between the sine of the angle of incidence to the sine of angle of refraction is known as Refractive Index.   Refractive Index = sin <i/sin<r   Private or public universities? When the question of choosing a university arises, it is necessary to decide not only…

Laws of Refraction of Light   The incident ray, refracted ray and the normal at the point of incidence all lie in the same plane.   – The ratio of sine of angle of incidence (i) to the sine of angle of refraction (r) is constant for all rays of light from one medium to…

What is Refraction of Light   The change in the direction and velocity of light as it enters from one medium to another is known as Refraction of Light.   Many private colleges in Moscow are located right at the universities so that students can get used to student life and navigate the entire learning…

Uses of Spherical Mirrors   Spherical mirrors are used in several places. Some of them are given below:   – Shaving: A concave mirror is used to enlarge the image.   – Microscope: A convex mirror is used for magnification in a microscope.   – Telescope: The convex mirror is used.   – In Searchlights…

Types of Spherical Mirrors   There are two types of spherical mirror:   1- Concave Mirror (Converging Mirror) 2- Convex Mirror (Diverging Mirror)   Concave Mirror:   The spherical mirror in which inner side of the surface is polished for reflection is called a concave mirror.   Properties:   The bulging side is polished.  …

What is Spherical Mirror   A spherical mirror is o seen-on of a hollow sphere.   English via skype is not difficult Do you think that starting to learn English via skype is difficult and very expensive? Are you afraid to start cooperation with unverified specialists? Don’t you want to risk and trust your knowledge…

Types of Reflection of Light in Physics   There are two types of Reflection:     Regular Reflection:   When parallel rays of light strike a surface and most of them are reflected in a some particular direction or same angle, they are said to be regularly reflected and the phenomenon is known as regular…

Laws of Reflection of Light in Physics   The angle of Reflection, is equal to the angle of incidence: n<i = m<r.   The incident ray, reflected ray and normal, all lie in the same plane.   English via Skype is a simple task!Right now, the best professionals who know firsthand that English via Skype…

What is Resonance   The large amplitude vibration of an object when given impulses at its natural frequency is known as Resonance.   Experiment:   Consider a long string stretched tightly between two pegs. Four pendulums A, B, C and D of different lengths are fastened to the string, another pendulum E of same length…

Simple Harmonic Motion in Physics   To and fro motion of a body in which acceleration is directly proportional to displacement and always directed towards mean position is known as Simple Harmonic Motion.   Condition for Simple Harmonic Motion   The conditions for simple Harmonic Motion are given below:   Some resisting force must act…