Science > Physics > Wave Motion > Speed of Transverse Waves In this article, we shall study to solve problems to find speed of transverse wave in a stretched string and a solid. Expression for velocity of transverse wave on a stretched string using dimensional analysis: The velocity (v) of transverse wave on a stretched […]
Science > Physics > Wave Motion > Numerical Problems on Wave Motion Set – 02 Wave velocity in medium does not depend on the frequency. It depends upon the Elasticity and inertia of the medium. When medium changes the wavelength and velocity of wave changes but the frequency remains the same. Thus n1 = n2. […]
Science > Physics > Wave Motion > Numerical Problems on Wave Motion Set – 01 In this article, we shall study to solve problems to calculate frequency, wavelength, and velocity of wave. Formulae: v = n λ n = 1/T Wave number = 1/λ Velocity of radio waves = 3 x 108 m s-1 Where, […]
Science > Physics > Wave Motion > Wave Motion The motion that repeats itself after fixed intervals of time is called periodic motion. We know that oscillatory motion is a type of periodic motion. Oscillatory motion is defined as the to and fro motion of an object from its mean position. Examples: oscillation of simple […]
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 […]
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 […]
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 […]