## Physics

### Composition of Nucleus

Rutherford discovered nucleus in his alpha particles scattering experiment. According to his observations, the whole mass of an atom is concentrated at the centre in very small volume this small […]

### Propagation of Error

Physics Chemistry Biology Mathematics Science > Physics > Units & Measurements > You are Here Propagation of Error in Addition: Suppose a result x is obtained by addition of two […]

### Uniform Circular Motion

Physics Chemistry Biology Mathematics Science > Physics > Circular Motion > You are Here The motion of a particle along the circumference of a circle with a constant speed is called uniform circular […]

### Applications of Expansion of Solids

Applications of Linear Expansion of Solids: A gap is kept between two successive rails The rails of a railway expand in summer and contract in winter. Therefore gaps are kept […]

### Modulation

Before the concept of the modulation, the signal used to be sent in form continuous wave with periodic interruption as in morse code. To code, send and decode such message high […]

### Measurement of Time

Time is the interval between two events. The study and science of time measurement is called chronometry or horology. Chronology, as opposed to chronometry, is the science of arranging events in their […]

### Problems Based on Kinetic Theory of Gases

Example – 1: Calculate the R.M.S. velocity of Hydrogen molecules at N.T.P. given : Density of Hydrogen at N.T.P. = ρ =  8.957 x 10-2 kg/m3 . Density of mercury  = […]

### Gravitational Potential

Physics Chemistry Biology Mathematics Science > Physics > Gravitation > You are Here The gravitational potential at a point is defined as the work done in bringing the unit mass from […]

### Problems on Calculation of M.I. and Radius of Gyration

Physics Chemistry Biology Mathematics Science > Physics > Rotational Motion > You are Here Example – 1: A thin uniform rod of length 1 m and mass 1 kg is […]

### Electromagnets

Physics Chemistry Biology Mathematics Science > Physics > Magnetic Effect of Electric Current > You are Here Oersted’s Experiment: Oersted took long conducting wire and aligned it in magnetic meridian i.e. along […]