Month: September 2018

Refraction of light and Snell’s law in physic

Refraction of light CONTENTS Definition of refraction of wave Refraction of  through rectangular glass block Experimental determination of refractive index using real and apparent depth method Laws of Refraction  waves Refraction  through a triangular prism Total internal reflection and Critical angle Application of total internal reflection in nature Application of totally reflecting prisms Refraction  through …

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Reflection of light by plane and covered mirror

Reflection of light : Light is  wave and also a visible form of energy which is radiated outward from a source. We are able to see object because of the light they produce reflects back to us or light that fall on them from other sources also reflects back to us We have luminous and …

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gas laws

Gas laws and equations in physics

What are Gas laws ? To study gas behaviors, we should first of all consider three physical properties of gas, which are pressure volume and temperature. It is based on these three properties that the three gas laws were formulated. Note that among the three states of matter gas is most movable because of high kinetic …

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Nuclear Fission

Nuclear reaction in radioactive elements

What is Nuclear reaction? There are two types of nuclear reaction in radioactive elements – they are nuclear fission and nuclear fusion Nuclear fission This is nuclear reaction which can be defined as a process in which an unstable nucleus split into two parts of comparable mass. Fusion was discovered by Hann and strassman in …

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Simple harmonic motion  Question and answer 

Simple harmonic motion Question and answer  1 what is damped oscillation? Answer: Damped oscillation is one in which the amplitude gradually decrease with time and finally come to stop or zero. Simple harmonic motion Question and answer  2 Is a body moving with constant speed in a circular path undergoing acceleration? Answer: No it not …

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Resonance and forced Vibration in physics

Force Vibration and Resonance Let talk about force vibration before we discuss resonance.  From observation the amplitude of vibration in simple harmonic motion never really remains constant but becomes smaller and smaller. For instance the amplitude of bob of a simple pendulum decrease slowly until it comes to a stop. This is caused by loss …

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Simple harmonic motion in physics

what is simple harmonic motion? If a small body or a particle vibrates or moves to and fro along a straight line under the influence of a force so that its acceleration  toward a fixed point (or it equilibrium position) is proportional to its distance or displacement from that point, the body is said to …

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General physics question and answer 

  general physics questions and answer  1-10 The system international unit of pressure is Nm-2 or what? Answer: Pascal Define pressure. Answer: Pressure is defined as the force per unit area State the Pascal’s principle Answer: The Pascal’s principle states that the pressure applied to an enclosed fluid is       transmitted  undiminished to every …

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Make an AC to DC Converter construction

AC to DC Converter Alternating current (AC) is used for power line transmission and for high power devices like appliances and lights. The characteristics of AC make it ideal for transmission over long lines and for delivering large amounts of power for relatively unregulated uses, such as generating heat and light. Lower power appliances and …

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Radioactive elements

Radioactive elements and radioactivity

What is radioactivity? This is the spontaneous decay or disintegration of unstable nuclei of atoms of radioactive elements  by the emission of alpha (α-) particle, beta (β-) particle and gamma (γ-) radiation with the production of energy. What are radioactive elements?  These are the unstable elements that can decay or disintegrate  spontaneously to emit alpha …

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Physics formulas

Physics formulas, book 0ne for beginner

Physics Formulas for motions For the equation that connect, speed, velocity, acceleration, distance and time, we have four as listed below. V=U+2aS Physics formulas for work done W=Mgh (work done when something fall from up Physics formulas for energy EK=mgh , m=mass, g=gravity h=height Physics formulas for Power Physics formulas for linear expansion of solid …

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