Category: Pure Sciences

Buccal cavity – Mouth

Science > Biology > Digestion and absorption in Human > Buccal cavity – Mouth The digestive system in humans consists of an alimentary canal and associated digestive glands. The human alimentary canal (aliment: nourish) is a continuous muscular digestive tube about 8 to 10 m long that runs through the body. It is open at two ends […]

Physics

Bulk Modulus of Elasticity

Post author By Hemant More
Post date November 14, 2019
2 Comments on Bulk Modulus of Elasticity

Science > Physics > Elasticity > Volumetric Stress, Bulk Modulus of Elasticity In this article, we shall study the concept of volumetric stress, volumetric strain, and bulk modulus of elasticity. Volumetric stress: When the deforming forces are such that there is a change in the volume of the body, then the stress produced in the […]

Tags Bulk modulus, Deformation, deforming force, Elastic material, Elasticity, Hooke's law, Plastic material, Plasticity, Rigid material, Rigidity, Strain, Stress, Volumetric strain, Volumetric stress, Young's modulus of elasticity

Physics

Applications of Photovoltaic Cell

Post author By Hemant More
Post date November 13, 2019
1 Comment on Applications of Photovoltaic Cell

Science > Physics > Photoelectric Effect >Applications of Photovoltaic Cell Photoelectric cell or photocell or photovoltaic cell is an electronic device which works on the principle of the photoelectric effect and converts light energy into electrical energy. Construction: Photocell consists of an evacuated glass tube containing two electrodes emitter (C) and Collector (A). The emitter […]

Physics

Numerical Problems on Einstein’s Photoelectric Equation

Post author By Hemant More
Post date November 13, 2019
9 Comments on Numerical Problems on Einstein’s Photoelectric Equation

Science > Physics > Photoelectric Effect >Numerical Problems on Einstein’s Photoelectric Equation In this article. we are going to study to calculate the stopping potential and maximum kinetic energy of the photoelectron using Einstein’s photoelectric equation. Example 01: A metal whose work function is 4.2 eV is irradiated by radiation whose wavelength is 2000 A. […]

Tags Cathode ray, e by m ratio, e/m ratio, Incident frequency, Incident wavelength, Maximum kinetic energy, Numerical problems on specific charge, photoelectric, photoelectricity, Photosensitive material, stopping potential, Thomson's experiment, Threshold frequency, Threshold wavelength, Work function

Physics

Einstein’s Photoelectric Equation

Post author By Hemant More
Post date November 13, 2019
9 Comments on Einstein’s Photoelectric Equation

Science > Physics > Photoelectric Effect >Einstein’s Photoelectric Equation In this article, we shall, derive Einstein’s photoelectric equation and study its use to verify the characteristics of the photoelectric effect of light. Wave Nature of Light: Christian Huygen’s proposed that the light is propagated in the form of a wave. But this theory has a […]

Tags Cathode ray, e by m ratio, e/m ratio, Incident frequency, Incident wavelength, Maximum kinetic energy, Numerical problems on specific charge, photoelectric, photoelectricity, Photosensitive material, stopping potential, Thomson's experiment, Threshold frequency, Threshold wavelength, Work function

Physics

Numerical Problems on Photoelectric Effect

Post author By Hemant More
Post date November 13, 2019
3 Comments on Numerical Problems on Photoelectric Effect

Science > Physics > Photoelectric Effect > Numerical Problems on Photoelectric Effect In this article, we shall study to calculate, Energy of incident photon, threshold wavelength and threshold frequency of metal. Example – 01: The energy of a photon is 2.59 eV. Find its frequency and wavelength. Given: Energy of photon = E = 2.59 […]

Tags Cathode ray, e by m ratio, e/m ratio, Incident frequency, Incident wavelength, Numerical problems on specific charge, photoelectric, photoelectricity, Photosensitive material, stopping potential, Thomson's experiment, Threshold frequency, Threshold wavelength, Work function

Physics

Photoelectric Effect

Science > Physics > Photoelectric Effect > Photoelectric Effect It is found that when the light of very short wavelength (or high frequency) is incident on a certain metallic surface of photosensitive material, electrons are emitted by the surface. Most of the metals emit electrons when ultra-violet light is incident on them. However, alkali metals […]

Tags Cathode ray, e by m ratio, e/m ratio, Incident frequency, Incident wavelength, Numerical problems on specific charge, photoelectric, photoelectricity, Photosensitive material, stopping potential, Thomson's experiment, Threshold frequency, Threshold wavelength, Work function

Physics

Problems on Specific Charge Ratio

Post author By Hemant More
Post date November 12, 2019
No Comments on Problems on Specific Charge Ratio

Science > Physics > Photoelectric Effect > Problems on Specific Charge In this article, we shall see problems based on Thomson’s experiment to calculate the specific charge (e/m). Example – 01: In Thomson’s experiment, a beam of electrons travelling at 6.8 x 107 m/s is bent into a circular path of radius 4 cm in […]

Tags Cathode ray, e by m ratio, e/m ratio, Numerical problems on specific charge, photoelectric, photoelectricity, stopping potential, Thomson's experiment, Work function

Physics

Specific Charge Ratio of Electron

Post author By Hemant More
Post date November 12, 2019
No Comments on Specific Charge Ratio of Electron

Science > Physics > Photoelectric Effect > Thomson’s Experiment In this article, we shall study Thomson’s experiment to find the velocity of the electron in cathode rays and the specific charge ratio of an electron. Concept of Work Function: When an electron tries to come out of a metal surface (atom) the remaining part of […]

Tags Cathode ray, e by m ratio, e/m ratio, Numerical problems on specific charge, photoelectric, photoelectricity, stopping potential, Thomson's experiment, Work function

Physics

Numerical Problems on Poisson’s Ratio

Post author By Hemant More
Post date November 12, 2019
1 Comment on Numerical Problems on Poisson’s Ratio

Science > Physics > Elasticity > Numerical Problems on Poisson’s Ratio In this article, we shall study the concept of poisson’s ratio and numerical problems on it. The concept of this constant (Poisson,s ratio) was introduced by physicist Simeon Poisson. When a rod or wire is subjected to tensile stress, its length increases in the […]

Tags Deformation, deforming force, Elastic material, Elasticity, Extension in wire, Hooke's law, Lateral strain, Longitudinal strain, Longitudinal stress, Modulus of elasticity, Plastic material, Plasticity, Rigid material, Rigidity, Strain, Stress, Young's modulus of elasticity