b) Explain the origin of band gap.

Q: Question 5 Which of the following is an example of optical technology? Cloning A hydraulic lift…

A:

Q: 34- Energies of the electromagnetic radiation in the visible range of light (white light) vary…

A: (A) it is false because all of the radiation cant not be absorbed by the material just because the…

Q: Q1: Explain the electronic distribution of germanium, iron and magnesium if you know that their…

A: Solution to question (1) as per our Company policy:

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Q: 1. For an opaque surface, the absorptivity (a) , transmissivi (A) a + p= T B) a + p+T = 1 C) α +ρ- 1…

A: Given Data : Opaque surface

Q: What is the difference between led beam angle in air and underwater?

A: Beam angle in air will be different than in water due to refraction of light

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A: Concept of material properties. In general the material properties depends on the physical and…

Q: When electrons are in valance band, they  conduct electricity.   Select one: True False

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Q: Explain the Beam radiation and diffusive radiation with necessary diagram.

A: Solution (1): The beam radiation and the diffuse radiation are the components of solar radiation.…

Q: Coefficient of Refraction The ndence du Coefficient of Transmission Coefficient of Absorption

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Q: When electrons are in conduction band, they conduct electricity Select one: O True O False

A: "When electrons are in conduction band,they conduct electricity". This is "TRUE" statement.

Q: Explain the working of any two wave energy conversion devices with diagram.

A: i) Wave Profile Devices The relative motion between an absorber and a reaction point is induced by…

Q: Define Radiation and give at least 3 examples

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Q: Describe Young’s double slit experiment to produce interference pattern due to a monochromatic…

A: Young’s Double-slit experiment:  Coherent sources are those which have exactly the same frequency…

Q: In a CRO, the assembly of the cathode, intensity grid, and accelerating anode is called an electron…

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Q: A laser emits light of frequency 851523504007150 Hz. What is the wavelength of the light in nm?…

A: Given data,  f= 851523504007150 Hz. Speed of light c= 3*10⁸ m/s

Q: 2) How have improvements in black box technology impacted the investigation process of aircraft? Use

A: Given Black box To find Black box improvement benefited the investigators

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Q: Write short note on cathode protection

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Q: 6. Light of wavelength 304.2 nm illuminates a metal surface whose cutoff wavelength is 352.8 nm.…

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Q: Q3) a- Describe the differences between the absorption spectrum of the dIPeet and indirect gap…

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Q: 26 Concerning the photoelectric effect, which of the following is not true? * For most metals,…

A: Options a and b are false

Q: State the crystal structure characteristics of a solid must have for optic modes to exist

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Q: Neutrons cause more damage than gamma rays, although both are neutral and have large ranges. Why?

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Q: Recombination is when electron falls into a hole O

A: The correct option is 1. (an electron falls into a hole)

Q: In a CRO, the assembly of the cathode, focus grid, and accelerating anode is called an electron gun.

A: Draw the Block Diagram of an electron gun in a CRO.

Q: Which of the following scientists have been awarded by Nobel Prize in physics? a. Roger Penrose for…

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Q: 10- Which is not from ceramic materials?     A) Rubber  B) Toprak testi Earthen pottery  C)…

A: The ceramic materials are neither organic nor metallic. These are hard chemically non-reactive…

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Q: What is the collision frequency

A: for solution refer below images. NOTE:- here, answer demanded is frequency and frequency's unit is…

Forms of Energy

Energy is described as the capability to accomplish a task, like the ability to push a block by applying force on it. It is a quantitative property that is used to accomplish work on an object.