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For precision and detailed works, the light level may even approach 1500 – 2000 lux. Moving objects and the objects that are seen for longer duration require more illumination than those for the stationary object and casual work. Radiant Efficiency = Energy Radiated in the form of light/total energy radiated by the body.s. Answer.3. And it every important to know the basic Knowledge of computer. We have Provided Structure of the Atom Class 9 Science MCQs Questions with Answers to help students understand the concept very well. Q. Indulgences. The steradian (symbol: sr) or square radian is the SI unit of solid angle. Carbon arcs operate by ionizing air molecules (which carry the current between the carbon electrodes) to incandescence. These MCQ Questions on Chemical Effects of Electric Current Class 8 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. Explanation:- 1. The candela is the base unit of luminous intensity in the International System of Units (SI) Candela (cd) is defined as luminous flux emitted per unit solid angle along normal to the surface of one sixtieth (1/60) square centimeter area of a black body radiator (source of light) kept at a temperature of 2046K of solidifying platinum. A. answer choices ... A movement that led to the split of the Church between Catholics and Protestants. We have provided Chemical Effects of Electric Current Class 8 Science MCQs Questions with Answers to help students understand the concept very well. Radiant Efficiency = Energy Radiated in the form of light/total energy radiated by the body.s. Find out 10 GK Questions and Answers on the functions, principal organs and associates organisations of UNO in the form of multiple choice questions. Ques.3. Lightwave travel with a velocity of. Earlier “standard candle” was used to define the luminous intensity of a light source. LED C. 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