Science > Physics > Themodynamics > Laws of Thermodynamics In this article, we shall study the laws of thermodynamics and the concept of work done in a process. Zeroth Law of Thermodynamics: If two bodies P and Q are in thermal equilibrium and also P and R in thermal equilibrium then Q and R, are […]
Science > Physics > Nuclear Physics > Natural Radioactivity Radioactivity was discovered by French physicist Antoine Becquerel in 1896. He found that certain compounds of uranium emitted invisible radiations which affected photographic plates. It is also found that Thorium and its compounds also show these properties. Madame Curie and Piere Curie discovered two elements namely […]
Science > Physics > Optics > Reflection of Light > Introduction to Reflection of Light When a ray of light approaches a smooth polished surface and the light ray bounces back, it is called the reflection of light. The surface which reflects the light is called a reflecting surface. The ray of light approaching the […]
Science > Chemistry > Physical Chemistry > Nature of Chemical Bond > Octet Theory The force of attraction which keeps atoms or ions together in a molecule is called a Chemical bond. The main cause of chemical combination is the tendency to acquire stability i.e. a state with minimum energy and a tendency to acquire […]
माझा जन्म झाला आणि माझ्या आईवडिलांनी माझे नाव हेमंत ठेवले. मला याचं नावाने सर्वजण ओळखतात. मी माझी ओळख माझे नाव हेमंत म्हणूनच सर्वाना करून देतो. जर माझ्या आईवडिलांनी माझे नाव दुसरे काही ठेवले असते तर सर्वानी मला त्या नावाने ओळखले असते. म्हणजे माझे नाव हेमंत हि माझी खरी ओळख नाही. मग माझे शरीर माझी ओळख […]
Science > Physics > Rotational Motion > Numerical Problems on Moment of Inertia and Radius of Gyration In this article, we shall study to solve problems of calculation of moment of inertia, the radius of gyration, and torque acting on a rotating body. Example – 01: A thin uniform rod of length 1 m and […]
Science > Physics > Rotational Motion > Applications of Parallel and Perpendicular Axes Theorems The parallel axes theorem states that ” The moment of inertia of a rigid body about any axis is equal to the sum of its moment of inertia about a parallel axis through its centre of mass and the product of […]
Science > Physics > Rotational Motion Moment of Inertia of Standard Bodies In this article, we shall study the method of deriving an expression for moment of inertia of a body. Expression for Moment of Inertia of Uniform Rod About a Transverse Axis Passing Through its Centre: Consider a thin uniform rod, of mass M, […]
Science > Physics > Astronomical Physics > Artificial Satellites In this article, we shall study about artificial satellites and their uses. Natural satellites are heavenly bodies revolving around a planet in their fixed orbits. They are comparatively larger in size and their orbits have larger radii. Their surfaces are made of rocky mountains or gas. […]
Science > Physics > Astronomical Physics > The Moon The moon revolves around the earth. it is known as the satellite of the Earth. It is the natural satellite of the earth. It is the nearest heavenly body to the earth. It is the brightest object in the night sky. The average distance of it […]