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calculate it by using FOLLOWING formula:AC current gain= [delta(IC)/delta(IE)] DC current gain= IC/IE

opia (short-sightedness) and Hypermetropia (long-sightedness) are common eye conditions that are occur when light does not focus on the RETINA of the eye. Both conditions are easily corrected using prescription glasses or contact lenses or in mild cases by laser eye surgery.MYOPIAMyopia affects nearly 30 percent of the U.S. population. Myopia is the term used to define short sightedness. Light from a distant object forms an image before it reaches the retina. This could be because the eye is too long, or the cornea or crystalline lens is too strong.HYPERMETROPIAHypermetropia (Hyperopia) means long sight and is where the image of a nearby object is formed BEHIND the retina. This could be because the eye is too short, or the cornea or crystalline lens does not refract the light enough. What Are the Symptoms and Causes?A MYOPIC person has clear vision when looking at objects close to them, but distant objects will appear blurred. While the exact cause of myopia is unknown, research SUGGESTS that the condition is inherited. If ONE or both parents are nearsighted, there is a great likelihood their children will be nearsighted. Evidence also suggests that the condition may stem from how the individual uses her eyes. Hobbies or employment that requires regular and intense close-up use of your eyes (reading, logging daily hours behind the computer) can increase your odds of developing myopia.  The conditions have also been linked to environmental factors and health problems.A hypermetropic person may have blurred visionwhen looking at objects close to them, and clearer vision when looking at objects in the distance. In the young, because of the reserve capacity of the eye, there are often little, or no symptoms of the condition.  As you age, common symptoms are headaches and eye strain. You may also have difficulty with focusing on objects up close.  Red eyes from the strain is also a visual symptom. Sometimes the eye will feel dry and ache. After the age of 38,  it is very common for the eyes to not be able to focus appropriately on images close to the eyes. Reading material is often held at an arm’s length to be seen.

rn physics, the double-slit experimentis a demonstration that light and matter can display characteristics of both classically defined waves and particles; moreover, it displays the fundamentally probabilistic nature of quantum mechanical phenomena. The experiment was first performed with light by THOMAS YOUNG in 1801. In 1927, Davisson and Germer demonstrated that ELECTRONS show the same behavior, which was later extended to atoms and molecules.hope its help you

cess by which the culinary muscles change the focal length of an EYE hope its HELP you PLS mark as brainliest

ontal turntable is made from a uniform solid DISK and is initiallyrotating with ANGULAR velocity of 7.5 rad/s about a FIXED vertical axisthrough its center. ... The TOTAL angular momentum of the clay and theturntable about therotation axis. c. Theangular momentum of theturntable about therotation axis.

ll be the change in the RESISTANCE of Eureka WIRE, when its radius is halved and LENGTH is reduced to one-fourth ...

ll be the change in the RESISTANCE of EUREKA wire, when its radius is halved and LENGTH is REDUCED to one-fourth

ctrum is the range of DIFFERENT colours which is produced when light PASSES through a GLASS PRISM or through a drop of water.Prism splits colour because each color is refracted differently, each bends at a different angle, resulting in a fanning out and separation of white light into the colors of the spectrum. Pls MARK as brainliest

tors that CONTRIBUTED to the development of print are as follows :- 1) Since, a NEW reading mania was emerging, handwritten books or manuscripts were not enough for all people to read and learn.2) The handwritten books could not be imitated the same. 3) The various improvement in technology as GUTENBERG's printing press came up also lead to development of print.4) Manuscripts were fragile that LIMITED their usage. So, people prefered printed books.5) Woodblock printing was becoming popular AMONG the people.

gravity is a very weak force per unit mass. The Earth keeps you on the ground because it makes up for it in bulk. The most MASSIVE building ever build by HUMANS is still nowhere near large enough for you to feel its gravitational pull on you, but it does have a gravitational pull, just a NEGLIGIBLE one. What you are asking is like asking “why, if there are microorganisms in the world all around us, why can't we feel themmoving around on our skin?”Because you can't feel gravitational forces. What you can feel is the compression of your body as your contact with the ground prevents you from falling in the DIRECTION of the gravitational field

on motor requires SEPARATE STARTING circuitry to provide a rotating field to the motor. The normal running windings within such a single-phase motor can cause the rotor to turn in either direction, so the starting CIRCUIT determines the operating direction.....hope it will HEP you.....good morning✌

object VIBRATES the molecules AROUND the object starts vubrating which reaches our ears in LINEAR MOTION

-Ball Point PEN WORK on the PRINCIPLE of FRICTION here is use the rolling frictionbecause paper is SLIDING friction and we know that rolling friction work better when in opposite is sliding frictionBE SMART ^_^

this QUESTION ASK in GOOGLE or YOUTUBE

ur answer•°•°•°•°•°•°•°•°•°•°•°•°•°•°•°•°• They can pass through solids, liquids and gases easily. As they travel throughrock, the waves move tinyrock particles back and forth-- pushing them apart and then back TOGETHER -- in LINE with the DIRECTION the WAVE is TRAVELING. These wavestypically arrive at the surfaceas an abrupt thud.HOPE HELPED *√

perties of the magnetic field LINES are:*They originate from north pole of a magnet *The magnetic field lines do not INTERSEX each other *They always move from north pole oto South pole *They move APART one another rather than the polesI don't know about QUANTIZATION of charge and conservation of charge

gth of the bar at 19 °C will be 9.99989 cmExplanation : From the law of thermal expansion of solid, we know that,L = L₀(1 + αΔt)where L₀ = ACTUAL length = 10 cmα = coefficient of thermal expansion = 0.000011Δt = temp. difference = 19 - 20 = -1 °Cputting these VALUES in the above equation we get,L = 10( 1 - 0.000011 x 1)=> L = 10(0.999989)=> L = 9.99989 cmHence the length of the bar at 19 °C will be 9.99989 cm

your ANSWER in ATTACHMENT

Faa=πr2a∝r2a1a2=(R1R2)2=(21)2⇒4S1S2=F/a1F/a2=(a2a1)=14Ratio of STRESS is 1 : 4Hence (D) is the CORRECT answer.

equator, the same object weight the least.Weight of the any object is defined by W = MG (mass X acceleration due to gravity). The value of "g" keeps changing on the earth's surface. It DIFFERS from 9.780 m/s² at equator to 9.832 m/s² at poles. This shows that any BODY will feel more weight at the poles as COMPARED on the equator.

e!!Here is your ANSWER!!Space-time is a mathematical MODEL that joins space and time into a single idea called a CONTINUUM. This four-dimensional continuum is known as Minkowski space. Combining these two ideas helped COSMOLOGY to understand how the universe works on the big level (e.g. galaxies) and small level (e.g. atoms).@RAJASTHANI....................

lysis, process by which electric current is PASSED through a substance to EFFECT a chemical CHANGE. The chemical change is one in which the substance loses or gains an electron (oxidation or reduction). Electrolysis is used extensively in metallurgical processes,such as in extraction (electrowinning) or purification (electrorefining) of metals from ores or compounds and in deposition of metals from solution (electroplating). Electroplating, process of coating with metal by means of an electric current.Plating metal may be transferred to conductive surfaces (metals) or to nonconductive surfaces (plastics, wood, leather) after the LATTER have been rendered conductive by such processes as coating with GRAPHITE, conductive lacquer, electroless plate, or a vaporized coating.

is connected in SERIES to prevent any short circuit or to discontinue the flow of charges in the circuit due to overloading.If excess current passes through circuit, it breaks the circuit and protects the appliance from getting damaged. A FUSE is rated for a specific value of current. It means it is designed to break the flow if the current exceeds the required value. If you put a fuse with a higher rating, It would allow more current in the circuit.The current in the circuit can now exceed the LIMIT which was set earlier and can DAMAGE the appliance.Hope it helps you............

ht changes direction when it enters the prism, and it changes again when it leaves. This bending of light isn't something that's unique to prisms. It's a common occurrence in translucent and transparent materials. We have even come up with unique names for the angles at which the light enters and travels through the material. The angle at which the light enters is called the angle of incidence. The angle of incidence can be defined as the angle between the oncoming ray of light and the normal vector of the surface of the material it is coming into contact with. The normal vector is a perpendicular vector from a plain or surface of an object. Normal Vector and Angle of Incidence Absorption, Reflection and Refraction There are three possibilities for what can happen to the light after it comes into contact with an object. The first is absorption. In absorption, the light ray travels no further; it is taken into the object and TRANSFORMED into energy. This most often takes the form of heat. The second is reflection, where the light ray is bounced off the material instead of absorbed. The final possibility is refraction, in which the light PENETRATES the object, but instead of being turned into internal energy, it changes direction and continues to travel through the material as light. Refraction of Light in a Plastic Block It's important to note that light does not often do just one of those three possibilities; rather, it travels in a combination of them. For example, we SEE color because objects REFLECT the visible light spectrum of the corresponding colors we see back to our eyes, but they absorb the other wavelengths of the visible light spectrum. Another example would be translucent objects. A translucent material, as opposed to a transparent one, only lets some of the light travel through it and absorbs and reflects the rest of it. With absorption, there are no further relations between the angle of incidence and what happens to the ray of light, but with reflection and refraction, there is more to learn. LAW of Reflection The relation between the reflected light ray and the incident light ray is governed by the law of reflection. The law of reflection states that the angle between the reflected ray and the normal vector is equal to the angle of incidence. Mathematically this is expressed by the following simple relation: thetaI = thetaR thetaI = angle of incidence thetaR = angle of reflection So, if you know either the angle of reflection or the angle of incidence, you automatically know the other as well. Reflection Diagram Snell's Law Have you ever been spear fishing, or seen it done on television? The fisherman stands in or above shallow water and tries to spear the fish as they swim by. If they try to hit the fish exactly where they see it, they will miss. The fish is not where it seems to be from above the water. This is an effect of refraction. Light bending as it enters the water is what causes the fish to appear in a different spot from where it actually is. Much like with the angle of reflection, there is also a relation between the angle of incidence and the angle of refraction. When light enters from one medium into another, it can bend to some degree. The calculation of what degree the light will bend is known as the law of refraction, or Snell's Law. The degree to which the light bends is dependent on both the incidence angle entering the second medium and the speed at which the light travels through the two mediums. The relationship between the speed of light and refraction is given in the index of refraction. You will need to understand the index of refraction in order to understand Snell's Law.

search contribution addresses electric-field stimulation of intra-tissue mass transfer and cell PROLIFERATION in viscoelastic biomaterials. The unsteady state reaction-diffusion equation is SOLVED according to the von Kármán-Pohlhausen integral method of boundary layer analysis when nutrient consumption and tissue regeneration occur in response to harmonic electric potential differences ACROSS a parallel-plate capacitor in a dielectric-sandwich CONFIGURATION. The partial differential mass balance with diffusion and electro-kinetic consumption contains the Damköhler (Λ(2)) and Deborah (De) numbers. Zero-field and electric-field-sensitive Damköhler numbers affect nutrient boundary layer growth. Diagonal elements of the 2nd-rank diffusion tensor are enhanced in the presence of weak electric fields, in agreement with the formalism of equilibrium and nonequilibrium thermodynamics. Induced DIPOLE polarization density within viscoelastic biomaterials is calculated via the real and imaginary components of the complex dielectric constant, according to the Debye equation, to quantify electro-kinetic stimulation. Rates of nutrient consumption under zero-field conditions are described by third-order kinetics that include local mass densities of nutrients, oxygen, and attached cells.

walk on floor there should be a GRAVITATIONAL FORCE anothere example LIKE if a pencile get down from the table it is by the gravitational force

ht ray strikes the mirror normally ie at 90 degrees. The INCIDENT ray and reflected ray are both PERPENDICULAR to the surface of mirror along the normal to the mirror and are along the same path. THEREFORE both incident ray and reflected ray are at 0 degrees.....ACCORDING TO ME.....GUYS BUT NOT SURE.....HOPE IT WILL HELP U..

r a circular coil of radius a and carrying current I in the direction shown in Figure. Suppose the loop lies in the plane of paper. It is DESIRED to find the magnetic field at the centre O of the coil. Suppose the entire circular coil is DIVIDED into a large number of current elements, each of length dl. According to Biot-Savart law, the magnetic field at the centre O of the coil due to current element I  is given by; where  is the position vector of point O from the current element. The magnitude of  at the centre O is The direction of  is perpendicular to the plane of the coil and is directed inwards. Since each current element contributes to the magnetic field in the same direction, the total magnetic field B at the center O can be found by integrating the above equation around the loop i.e. For each current element, ANGLE between  and  is 90°. Also distance of each current element from the center O is a. Therefore Now, dl = Total length of the coil  = 2  a If the coil has n turns, each carrying current in the same direction, then CONTRIBUTIONS of all the turns are added up, then B =

ltages in labs are mainly required in the fields of electrical engineering and applied physics. These high voltages (ac, dc, impulse) are used for many applications. Few applications:- electron microscopes and x ray units require high DC voltages of the order of 100 kv or more. electrostatic precipitator, particle ACCELERATORS in nuclear physics require DC voltages of the order of kilo-volts or EVEN mega-volts. for testing power apparatus rated for EXTRA high transmission voltages 400KV and above, high voltages of one million volts or even more are required. high impulse voltages are used to simulate the over-voltages that occur in power system due to lightening or switching action. In the FIELD of electrical engineering the main requirement of high voltages is for insulation testing of various components in power system. This is why there is a need to generate high voltages in laboratories.

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lectronic CONFIGURATION of POTASSIUM 1s^2 2s^2 2p^6 3s^2 3p^6 4s^1 .now we take only outermost shell which is4s^1so principal quantum(n) =4azimuthal q.no for s(l)=0magnetic q.no(-l to+l)=0spin q.no=1/2thanks for ASKING

ng to first law of thermodynamics, ΔU = Q + W In adiabatic process, q = 0 HENCE , ΔU = W and ΔU = Cv ΔT THUS it can be written as W = Cv ΔT W = Cv [T2 - T1]

& Momentum The IMPULSE-momentum theorem states that the change in momentum of an object equals the impulse APPLIED to it. J = Δp. If mass is constant, then… F̅Δt = mΔv. If mass is changing, then… F dt = m DV + v DM. The impulse-momentum theorem is logically equivalent to Newton's second law of MOTION (the force law).

drical coil of wire acting as a MAGNET when carrying electric current.Solenoids and electromagnets technically are not the same THING, but people talk as if they are. A SOLENOID is just a coil of wire, but when you run a current through it, you create an electromagnet. Since this is by far the most useful application of a coil of wire, it's not surprising that when you say the word 'solenoid,' people tend to assume you MEAN electromagnet. Electromagnets are particularly useful because, unlike regular MAGNETS, they can be switched on and off, and strengthened by increasing the current flowing through them.

pieces of METAL are A and B.a/c to question, ratio of length of pieces A and B is 1 : 2 and ratio of radius of pieces A and B is 1 : 2. e.g., and we know, where R is resistance, l is length of wire and a is cross sectional area of wire. so, and here, we get, when both pieces are connected in parallel.then, =hence,

rticle is subatomic PARTICLE having the same mass as a given particle but opposite electric or magnetic properties. EVERY kind of subatomic particle has a corresponding antiparticle, e.g. the positron has the same mass as the ELECTRON but an equal and opposite charge.Please mark it as BRAINLIEST...

s all thanx goes to Rod and cones CELL which PRESENT in our EYE ball which make us to VISIBLE in DAY and night

reflection1. In regular REFLECTION the reflected light BEAMS are ALWAYS parallel to the incident light beam.2. Regular reflection occurs from a nicely polished reflective surface.Diffused reflection1. In diffused reflection the reflected light beams are not parallel to the incident light beams.2. It occurs from a diffused or IRREGULAR surface.

hermal ENERGY conversion uses the temperature difference between cooler DEEP and warmer shallow or surface seawaters to RUN a heat engine and produce useful work, USUALLY in the form of electricity. OTEC can operate with a very high capacity factor and so can operate in base LOAD mode.Hope it helps...☺️☺️

..!❤️Here's Your Answer..!Quantum mechanics is DEFINED as the science of the very SMALL. QM explains the behavior of matter and how it interacts with energy on the scale of atoms and subatomic particles.QM can also be defined as a fundamental theory which describes nature at the smallest scales of energy levels of atoms and subatomic particles. Quantum mechanics is also KNOWN as quantum PHYSICS, quantum theory, the wave MECHANICAL model, or matrix mechanics.Hope This Helps..!#BeBrainly❤️

e your answer is ...... iris control size of pupil by regulating light that REACHES to our retinairis help to control DUST....... or help in saving EYES tqsm... hope you like it if U then mark me as BRAINLIEST #disha

eric PRESSURE, also called barometric pressure, force per unit area exerted by an atmospheric column (that is, the entire body of air above the specified area). Atmospheric pressure can be measured with a mercury barometer (hence the commonly used synonym barometric pressure), which indicates the height of a column of mercury that EXACTLY balances the weight of the column of atmosphere over the barometer. Atmospheric pressure is also measured using an aneroid barometer, in which the SENSING element is one or more hollow, partially evacuated, corrugated metal disks supported against collapse by an inside or OUTSIDE spring; the change in the shape of the disk with changing pressure can be recorded using a pen arm and a clock-driven revolving drum

r every 90 DEGREES the rotation would stop DUE to the gap in the SPLIT ring, but the momentum of the COIL keeps it moving for just a little longer until the coil experiences a force again and the coil moves for another 90 degrees. Then, without a split ring commutator, this same process will occur but in the opposite direction, and then motor will constantly go BACK and forwards 180 degrees. But a split ring commutator reverses the current, so that the current in the armature is unidirectionalc) The direction of magnetic field is from N-pole to S-polee) The electrical energy in the external circuit is converted into machenical engery which rotates the armature coil