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udent,◆ Answer -BGE = 1.875 eV◆ Explaination -BAND gap energy of LED is SEMICONDUCTOR is -BGE = hc/λIn electron VOLTS, this is represented as -BGE = hc/eλBGE = (6.62×10^-34 × 3×10^8) / (1.6×10^-19 × 662×10^-9)BGE = 1.875 eVThanks for ASKING. Hope this helps you...

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udent,◆ Answer -Nh = 1.2×10^14 holes◆ Explaination -No of ELECTRONS in the semiconductor is -NE = 1×10^-2 × 1×10^-2 × 2×10^-2 × 6×10^19Ne = 1.2×10^14 e-We know that no of holes is EQUAL to no of electrons, thus no of holes in semiconductor is 1.2×10^14. i.e. Nh = 1.2×10^14 holes.Hope this HELPS you..

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given OBJECT distance u = - 12cm (by using SIGN convention). The FOCAL length of the convex mirror, f = 10cm.From mirror formula,The image distance is 5.45 CM.

i THINK POSITION of STAR will be FARTHER from the actual PLACE

Heya MATE.....The auditory nerve is a BUNDLE of nerve FIBERS that carries HEARING INFORMATION between the cochlea the brain.Hope it helps.....

The density of the SUBSTANCE is DEFINED as MASS of the substance PER unit VOLUME.Density= Mass / volume

mon emitter amplifier is a three basic single stage bipolar JUNCTION transistor and is used as a voltage amplifier. The INPUT of this amplifier is taken from the base terminal, the OUTPUT is COLLECTED from the COLLECTOR terminal and the emitter terminal is common for both the terminals. The basic symbol of the common emitter amplifier is shown below. open the links https://www.elprocus.com/wp-content/uploads/2016/10/What-is-a-Common-Emitter-Amplifier.jpghttps://www.elprocus.com/wp-content/uploads/2016/10/Working-of-Common-Emitter-Amolifier.jpg

e semiconductor is a type of semiconductor. Ordinary semiconductors are made of materials that do not conduct (or CARRY) an electric current very well but are not highly resistant to doing so. They fall half way between CONDUCTORS and insulators. An electric current OCCURS when electrons move through a material. In order to move, there must be an electron 'hole' in the material for the electron to move into. A p-type semiconductor has more holes than electrons. This allows the current to flow along the material from hole to hole but only in one direction. Semiconductors are most often made from silicon. Silicon is an element with four electrons in its OUTER shell. To make a p-type semiconductor extra materials like boron or aluminium are added to the silicon. These materials have only three electrons in their outer shell. When the extra material replaces some of the silicon it leaves a 'hole' where the fourth electron would have been if the semiconductor was pure silicon.

re total 7 LOGICAL gates:- AND, OR, NOT, NAND, NOR, XOR, XNOR. Among all the gates, AND, OR & NOT gate are Basic gates, because these THREE gates have basic operation. NOR & NAND gates are known as universal gates. They are simply a NOT gate ADDED AND & OR gate.

tion:valence band is the thin LAYER of some wires CONNECTED .it is related to the ELEMENTS CONDUCTION band is the conducting wiresemiconductor conducts both elements and compounds

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A+BExplanation:The BOOLEAN EQUATION or NOTATION of a NOR GATE is A+B

tripically the VOLTAGE of a PHOTO CELL is 0.7v

A FILTER CIRCUIT is a device to remove the A.C. COMPONENTS of the RECTIFIED output but allows D.C. components to reach the load

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Explanation:Mark as BRAINLY and give ratings N-type SEMICONDUCTOR. An N-Type semiconductor is created by adding pentavalent impurities like phosphorus (P), arsenic (As), ANTIMONY (Sb), or bismuth (Bi). A pentavalent impurity is called a DONOR ATOM because it is ready to give a free electron to a semiconductor. The impurities are called dopants.

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(C)Explanation:The LED has to be CONNECTED in FORWARD bias MODE for detecting the light.hope it helps pls mark me brainliest

c) Ie ≈ 11 mA, Ib ≈ 1m Explanation:Collector CURRENT = Ic = 10mA (GIVEN)Percentage of the electron reaching the collector = 90% (Given)Thus, Ic = 90% of IeIc = 90/100 × IeIe = Ic × 100/90Ie = 10 × 100/90Ie = 1000/90Ie = 11.11Base current = Ib = Ie-Ic= 11.11 - 10= 1.1Therefore, If 90% of the electron from the emitter reaches collector then there will be Ie ≈ 11 mA, Ib ≈ 1m

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udent,◆ Answer -BE/nucleon = 8.2238 MeV◆ Explanation -Mass DEFECT of Cl is calculated by -∆m = (mp.np + mn.nn) - M∆m = (17×1.00783 + 18×1.00866) - 34.98∆m = 0.309 uBinding ENERGY PER nucleon is calculated as -BE/nucleon = 931.5 ∆m/(nm+nn)BE/nucleon = 931.5 × 0.309 / (17 + 18)BE/nucleon = 8.2238 MeVHope this HELPS you...

udent,◆ Answer -d = 4×10^-14 m◆ EXPLANATION -# Given -E = 18 KeV E = 18×10^3×1.6×10^-19 JE = 2.88×10^-15 J q1 = +1.6×10^-19 Cq2 = +1.6×10^-19 C# Solution -Closest distance of APPROACH between two protons is CALCULATED as -d = k.q1.q2/E'd = k.e^2/(2E)d = 9×10^9 × (1.6×10^-19)^2 / (2 × 2.88×10^-15)d = 4×10^-14 mTherefore, closest distance of approach between two protons is 4×10^-14 m.Thanks DEAR...

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Optical measurement can determine the band gap is direct or not. The absorption spectrum of direct band gap materials should be able to more clearly distinguish intrinsic absorption band and absorption edge, the CHANGE is relatively slow, but that for INDIRECT band gap materials is steep. Explanation:

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They contain and control nuclear CHAIN REACTIONS that produce HEAT through a physical process called fission. That heat is used to make steam that spins a TURBINE to create electricity.The main job of a reactor is to house and control nuclear fission—a process where atoms split and release energy.Reactors use uranium for nuclear fuel. The uranium is processed into small ceramic pellets and stacked together into sealed METAL tubes called fuel rods. Typically more than 200 of these rods are bundled together to form a fuel assembly. A reactor core is typically made up of a couple hundred assemblies, depending on power level. Inside the reactor vessel, the fuel rods are immersed in water which acts as both a coolant and moderator. The moderator helps slow down the neutrons produced by fission to sustain the chain reaction.

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tion:RADIOACTIVE RADIATION SANDOZ radiations which has generated by the earth and their moons properties is that they can CAUSE burns to any and everything present on this earth give the DAY

Nuclear Chain Reactions. A chain reaction refers to a PROCESS in which neutrons RELEASED in fission PRODUCE an additional fission in at least one further nucleus. This nucleus in turn PRODUCES neutrons, and the process repeats. The process may be controlled (nuclear power) or uncontrolled (nuclear weapons).

ie is a unit of ionizing radiation (radioactivity). It's symbol is CI. 1Ci=3.7 X 10^10Bq (DISINTEGRATIONS or nuclear transformations per second). This is approximately the amount of radioactivity emitted by one gram (1 g) of radium-226.The unit is named after Pierre Curie, a French PHYSICIST

The rate of radioactive DECAY, i.e. the rate at which an element disintegrates is measured by counting the number of or -particles emitted per unit time. ... It is found that for any given radioactive element, the rate at which it disintegrates at any INSTANT of time is proportional only to the number of ATOMS present.

I don't know the formula ( you can google it) but I can EXPLAIN you what is half life of a RADIOACTIVE element.Half-Life is a period in which the radioactive element gets halved in quantity...i.e. for EXAMPLE , a 100 gram radioactive element have a half life of 5 years.So, after 5 years it will become 50 grams.in next 5 years the amount will be reduced to 25 grams.Similarly, for another five years the amount remaining will be 12.5 grams.So, ACCORDINGLY you can SAY that the radioactive element can never be 100% destroyed.

clear Forces Figure 1: The atomic nucleus made up from protons (yellow) and NEUTRONS (blue) and held together by nuclear forces.Nuclear forces (also known as nuclear interactions or strong forces) are the forces that act between two or more nucleons. They bind protons and neutrons (“nucleons”) into atomic nuclei. The nuclear force is about 10 millions times stronger than the chemical binding that holds ATOMS together in molecules. This is the reason why nuclear reactors produce about a million times more energy per kilogram fuel as compared to chemical fuel like oil or coal. HOWEVER, the range of the nuclear force is short, only a few femtometer (1 FM =10−15 m), beyond which it decreases rapidly. That is why, in spite of its enormous strength, we do not feel anything of this force on the atomic scale or in everyday life. The development of a proper theory of nuclear forces has occupied the MINDS of some of the brightest physicists for seven decades and has been one of the main topics of physics research in the 20th century. The original idea was that the force is caused by the exchange of particles lighter than nucleons known as mesons, and this idea gave rise to the birth of a new sub-field of modern physics, namely, (elementary) particle physics. The modern perception of the nuclear force is that it is a residual interaction (similar to the van der Waals force between neutral atoms) of the even stronger force between quarks, which is mediated by the exchange of gluons and holds the quarks together inside a nucleon.