Science > Physics > Stationary Waves > Numerical Problems Vibration of String Set-03 In this article, we shall study to solve problems to calculate fundamental frequency of vibration of string and its higher frequencies. Example 01: A stretched wire of length one metre gives 3 beats per second with a tuning fork. If the length […]
Category: Pure Sciences
Science > Physics > Stationary Waves > Numerical Problems Vibration of String Set-02 In this article, we shall study to solve problems to calculate fundamental frequency of vibration of string and its higher frequencies. Example 01: A stretched wire emits a fundamental note of 256 Hz. Keeping the stretching force constant and reducing the length […]
Science > Physics > Stationary Waves > Numerical Problems Vibration of String Set-01 In this article, we shall study to solve problems to calculate fundamental frequency of vibration of string and its higher frequencies. Important Formulae: For vibrating string pth overtone is (p + 1)th harmonic Frequency of qth harmonic = q x n Frequency […]
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Emission and Absorption Spectra
Science > Physics > Refraction of Light > Emission and Absorption Spectra A spectrum is a pattern which gives the wavelengths of radiation emitted (or absorbed) by a substance. The spectra in the visible region are divided into two groups. Emission spectra and absorption spectra. We use a spectrometer to study a spectrum. Light from […]
Science > Physics > Electromagnetic Induction > Numerical Problems on Electromagnetic Induction In this article, we shall learn to solve numerical problems to find e.m.f. induced, change in flux, and change in magnetic induction. Example 01: A circular coil having 1000 insulated turns each of area 1.274 m2 is kept in a uniform magnetic field […]
Science > Chemistry > Molecule and Molecular Mass > Calculation of Number of Moles and Molecules In this article, we shall solve problems to calculate number of moles and number of molecules and atoms present in given quantity of a substance. Example 01: 3.49 g of ammonia at STP occupies 4.48 dm3. Calculate molar mass […]
Science > Physics > Motion in a Straight Line > Numerical Problems on Motion Under Gravity Set – 01 In this article, we shall study to solve problems to calculate time of ascent, time of descent, time of flight, maximum height reached, velocities at various points on path. Example – 01: Show that for a […]
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Aromatic Compounds
Many substances isolated from resins, balsams, and essential oils possessed a fragrant smell and were found to be different from aliphatic compounds in chemical behaviour. Such substances were called aromatic compounds (Greek Aroma – fragrant smell). All aromatic compounds do not have a fragrant smell while some aliphatic hydrocarbons have a fragrant smell. Hence the […]
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Hydrolysis Constant
Science > Chemistry > Physical Chemistry > Ionic Equilibria > Hydrolysis Constant In this article, we shall study hydrolysis of different types of salts and we shall derive expression for hydrolysis constant for each type of salt. Hydrolysis of salt of strong acid and weak base. These salts on hydrolysis produce strong acids and weak […]
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SP Hybridization
Science > Chemistry > Physical Chemistry > Nature of Chemical Bond > sp Hybridization The mixing of one s – orbital and one p – orbital of the same atom of nearly same energy to form a set of diagonally arranged two identical hybrid orbitals of equivalent energy is called sp hybridization. These hybrid orbitals […]