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Which of the following statements are correct? A. Laser printers use dry ink B. Unlike dot matrix and inkjet printers, laser printers do not use ink when producing a document C. Laser printers use the property of static electricity D. Laser printers produce ozone gas and tiny toner particulates in the air Choose the correct answer from the options given below
In a company there are 252 engineers, in which the ratio of the number of electronics engineers and computer engineers is 2 ∶ 1. The ratio of the number of electronics engineers and computer engineers becomes 1 ∶ 1 after recruitment of some more computer engineers. The average age of all the engineers is now 22 years and the average age of the computer engineers is 2 years less than the average age of electronics engineers. (A) The average age (in years) of electronics engineers is 21 (B) The average age (in years) of computer engineers is 21 (C) The average age (in years) of electronics engineers is 23 (D) The average age (in years) of electronics engineers is 25 (E) The average age (in years) of computer engineers is 23 Choose the correct answer from the options given below: 
In the question below are given three statements followed by four conclusions I, II, III and IV. You have to take the given statements to be true even if they seem to be at variance from commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts. Statements: Some computer are phone. No computer is charger. Some charger are typewriter. Conclusions: I. All computer are typewriter. II. All phone are charger. III. Some charger are computer. IV. Some computer are not typewriter.
Computer peripherals are external devices connected to a computer. Which list contains input peripheral devices only?
In the following question, the first and the last part of the sentence/passage are numbered 1 and 6. The rest of the sentence/passage is split into four parts and named P, Q, R, S. These four parts are not given in their proper order. Read the sentence/passage and find out which of the four combinations is correct. S1. The modern-day computer has become an important part of our daily life. P. The mobile phone is also a type of computer because it fulfills all the criteria of being a computer. Q. Also, they are used in many fields like agriculture, designing, machinery making, defense, and many more. R. The computer is categorized into many different types like supercomputers, mainframes, personal computers (desktop), PDAs, laptops, etc. S. Nowadays, they use computers in every office whether private or government. S6. As the usage of computers increased it became a necessity for almost every field to use computers for their operations. 
What kind of printers are Inkjet printers and laser printers?
A manufacturing company produces 5 types of chairs in two sizes - Regular" and "Large". The pie charts represent the total number of five types of chairs produced and the table shows the ratio between the number of regular sized and large sized chairs of five types. Type of Chair A B C D E Ration between Number of Regular Size and Large Size Chairs 3 : 2 4 : 5 3 : 1 5 : 3 3 : 8   If the total number of all types of chairs produced is 7200, what is the total number of regular size chairs of all types produced.
Aishwarya studies either computer science or mathematics everyday. If she studies computer science on a day, then the probability that she studies mathematics the next day is 0.6. If she studies mathematics on a day, then the, probability that she studies computer science the next day is 0.4. Given that Aishwarya studies computer science on Monday, what is the probability that she studies computer science on Wednesday?
An injection laser has active cavity losses of 25 cm-1 and the reflectivity of each laser facet is 30%. Determine the laser gain coefficient for the cavity it has a length of 500μm.
Consider the following statements: (a) LASER diode generates monochromatic coherent light which reduces chromatic dispersion (b) LASER source is useful for high power long-distance optical communication (c) LASERs have longer lifetime than LEDs (d) LASER diodes are less temperature-sensitive than LEDs Which of the above statements are correct?