What is an optical fibre - Study guides, Class notes & Summaries

What is meant by work function (2) - Minimum energy required by an electron to escape from (1) a metal surface (1) What is meant by ionisation energy? (2) - Minimum energy required to remove an electron from an atom (1) from the ground state (1) Why do emitted electrons have a kinetic energy that varies up to a maximum value? (4) - Energy of a photon is fixed/constant (1) Energy is required for electrons to overcome work function ø (1) Electrons deeper into/below the surface of the meta...

Multiple Choice Questions 1. The generation, supply and distribution subsector is responsible for electrical power generation, transmission and distribution from electrical power stations to: A. the first user B. the second user C. the end user D. the middle user 2. The generation, supply and distribution subsector employs a range of people, including: A. electrical engineers and operators, electrical lines workers and electricians B. mechanical engineers and operators, electrical lines...

CPSA FINAL EXAM WITH REVISED QUESTIONS AND 100% CORRECT ANSWERS RATED A+. A1) Benefits of pen testing - Manage risk. Increase business continuity. Minimize clientside attacks. Protect clients, partners and third-parties. Comply with regulation. A1) Pentest structure - Reconnaissance (i.e., find live hosts, sweeping, find services, scanning, banner matching, find vulnerabilities). Target prioritization (e.g., assess servers rather than printers). Testing of services and exploitation if applic...

Multiple Choice Questions 1. The generation, supply and distribution subsector is responsible for electrical power generation, transmission and distribution from electrical power stations to: A. the first user B. the second user C. the end user D. the middle user 2. The generation, supply and distribution subsector employs a range of people, including: A. electrical engineers and operators, electrical lines workers and electricians B. mechanical engineers and operators, electrical lines...

Btec Applied Science Unit 1 Waves - Fibre Optics & Analogue Versus Digital Questions And Answers With Verified Solutions Already Passed!!!

AQA AS Physics Chapter 5 Optics LATEST UPDATE Normal Imaginary line perpendicular to the boundary between two materials or a surface. Partial reflection When some of the wave bounces off a surface, as it does when light moves from air to a refractive substance. Refractive index Ratio of sin i to sin r. Also the ratio of the speed of light in a vacuum to the speed of light in the material. Also the ratio of the wavelength of light in a vacuum to the wavelength of light in the material. ...

AQA AS Physics Chapter 5 Optics LATEST UPDATE Normal Imaginary line perpendicular to the boundary between two materials or a surface. Partial reflection When some of the wave bounces off a surface, as it does when light moves from air to a refractive substance. Refractive index Ratio of sin i to sin r. Also the ratio of the speed of light in a vacuum to the speed of light in the material. Also the ratio of the wavelength of light in a vacuum to the wavelength of light in the material. 1...

Stage 03 - Market Feasibility Study Multiple Choice Questions 1. The first comprehensive plan you need in contemplating any new venture is called: A. A profit-loss statement B. A financial projection report C. A feasibility study D. A business plan If the feasibility study indicates that the business idea has potential, then you can proceed to write a business plan. Difficulty: Easy Learning Objective: 03-01 Explain what a feasibility study is and why you need one. Topic: 03-01 Technical...

Final CPSA questions and answers latest updated ,100% correct A1) Benefits of pentesting Manage risk. Increase business continuity. Minimise client-side attacks. Protect clients, partners and third-parties. Comply with regulation. A1) Pentest structure Reconnaissance (i.e. find live hosts, sweeping, find services, scanning, banner matching, find vulnerabilities). Target prioritisation (e.g. assess servers rather than printers). Testing of services and exploitation if applicable. Consul...

Define the amplitude of a wave - Correct answer-The distance from the rest position to the top of the wave Define the period of a wave - Correct answer-The time taken for one wavelength to pass a point Define the frequency of a wave - Correct answer-The number of waves per second How many ms are in 1s? - Correct answer-1000 Define coherent light - Correct answer-Coherent light has the same frequency/wavelength and is in phase Define a transverse wave - Correct answer-The oscillations are...