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🏝MOST IMPORTANT PHYSICS QUESTIONS🏝 ════════════♢.✰.♢═══════════════ ☂️☂️1. A lemon kept in water in a glass tumbler appears to be larger than its actual size. It is because of - refraction of light ☂️☂️2. Light enters the eye through a thin membrane called - Cornea ☂️☂️3. Name the scientist who first used a glass prism to obtain the spectrum of sunlight - Issac Newton ☂️☂️4. The part of the human eye on which the image is formed is - Retina ☂️☂️5. A fuse wire must be - conducting and of low melting point ☂️☂️6. The frequency of ultrasound waves is - Greater than 20 kHz ☂️☂️7. The mirror that can give an enlarged and erect image of an object is known as - Concave Mirror ☂️☂️8. When the short circuit condition occurs, the current in the circuit - increases substantially ☂️☂️9. Which types of radiations has the smallest wave length? - γ -rays ☂️☂️10. The instrument used for detecting the presence of electric current in a circuit is - Galvanometer ☂️☂️11. The Sun is seen little before it rises and for a short while after it sets. This is because of - atmospheric refraction ☂️☂️12. The Sun appears reddish during sunrise and sunset. The phenomenon in optics which is responsible for this appearance of the Sun is - Scattering ☂️☂️13. At 20°C, the speed of sound in water is approximately - 1500 m/s ☂️☂️14. The brightness of a star depends on its - size, temperature and distance from the earth ☂️☂️15. The loudness of sound is related to: - Its amplitude ☂️☂️16. The symbol of the element 'Tungsten' is: - W #important ✍️✍️CREDIT:-Krushna⭐️⭐️ 🏝🏝 Join Now 👉@Daily_Science_Computer_Notes

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🖥 🖥🏝🏝Computer notes🏝🏝 🖥 🖥 ══════════♢.✰.♢═══════════════ ☂️☂️■ Siddhartha was the first computer developed in India. ☂️☂️■ Alan Turing is known as the father of the modern computer. ☂️☂️■ John Von Neumann was introduced first architecture of computer in the year 1948. ☂️☂️■ Transistors were invented by Bell Laboratory. ☂️☂️■ In 1958, Jack St. Clair Kilby and Robert Noyce invented the first IC. ☂️☂️■ In latest generation computers, the instructions are executed parallel as well as sequential. ☂️☂️■(i) CRAY-1 was the world’s first supercomputer introduced by Seymour R CRAY in 1976. ☂️☂️■(ii) PARAM was the first supercomputer developed in India in 1990. ☂️☂️■ QWERTY keyboard contains total 104 keys. ☂️☂️■ Caps Lock and Num Lock keys are called as ‘toggle keys’ because when pressed, they toggle or change their status from one state to another. ☂️☂️■ Shift, Ctrl and Alt keys are also known as modifier keys #important ✍️✍️CREDIT:-Krushna⭐️⭐️ 🏝🏝 Join Now 👉@Daily_Science_Computer_Notes

🏝🏝*MOST IMPORTANT SCIENCE QUESTIONS*🏝🏝 ══════════════════♢.✰.♢═══════════════ 🔺🔺Circular motion is a movement of an object along the circumference of a circle or rotation along a circular path. 🔺🔺Oscillatory motion is the repeated motion in which an object repeats the same movement over and over. 🔺🔺Rotational motion is the rotation around a fixed axis or about a fixed axis of revolution. 🏝🏝Atomic No & Mass No. Short Trick🏝🏝 #Trick - APEMAN👇👇 🎻🎻Atomic No. = No. of Protons = No. of Electrons 🎻🎻Mass No. = Atomic No. + No. of Neutrons Join Now 👉@Daily_Science_Computer_Notes 🏝🏝Isotopes, Isobars & Isotones Short Trick🏝🏝 #Trick - Bring Top Talented MAN (BTT MAN) ⛲️⛲️Atoms having same ☂️☂️Isobars → Mass Number ☂️☂️Isotopes → Atomic Number ☂️☂️Isotones → Neutrons #important ✍️✍️CREDIT:-Krushna⭐️⭐️ 🏝🏝 Join Now 👉@Daily_Science_Computer_Notes

🏝🏝*MOST IMPORTANT COMPUTER QUESTIONS* 🏝🏝 ══════════════════♢.✰.♢═════════════════ ☂️☂️1.IFSC :- Indian Financial System Code ☂️☂️2.MICR :- Magnetic Ink Character Recognition ☂️☂️3.RTGS :- Real Time Gross Settlement ☂️☂️4.NEFT:- National Electronic Fund Transfer ☂️☂️5.SFMS:- Structured Financial Messaging System DNS:- Deferred Net Settlemen 🏝🏝🔺List of Computer Hardware with Their Inventors🔺🏝🏝 🔺🔺👉Keyboard:- Herman Hollerith(1930's) 🔺🔺👉Transistor:-John Bardeen,Walter Brattain and Wiliam Shockley(1947-1948) 🔺🔺👉RAM:-An Wang and Jay Forrester(1951) 🔺🔺👉Trackball:-Tom Cranston and Fred Longstaff(1952) 🔺🔺👉Hard Disk:- IBM ,The IBM model 350 Disk file(1956) 🔺🔺👉Integrated Circuit :- Jack Kilby and Robert Noyce(1958) 🔺🔺👉Scanner :- Rudolph Hell in germany(1963) 🔺🔺👉Mouse:-Douglas Engelbart(1964) 🔺🔺👉CD-ROM :-James Russell(1965) 🔺🔺👉Laser Printer:-Gray Starkweather at XEROX in 1969 🔺🔺👉Floppy Disk :- Alan Shugart and IBM (1970) 🔺🔺👉Microprocessor:-Faggin Hoff and Mazor-INTEL4004(1971) #important ✍️✍️CREDIT:-Krushna⭐️⭐️ 🏝🏝 Join Now 👉@Daily_Science_Computer_Notes

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🏝🏝*MOST IMPORTANT PHYSICS QUESTIONS* 🏝🏝 ══════════════════♢.✰.♢═════════════════ ☂️☂️1. The dynamo/Generator converts - mechanical energy into electrical energy ☂️☂️2. The Electric motor converts - electrical energy into mechanical energy ☂️☂️3. The Microphone - Sound Energy to Electric Energy ☂️☂️4. Transformer is an electric device is based on - Faraday’s law of induction ☂️☂️5. A parachute is made up of - nylon ☂️☂️6. Every hot object emits - Infrared Rays ☂️☂️7. In which direction does the freely suspended magnetic needle stand? - North-South direction ☂️☂️8. A red glass when heated for a long time then the glass that will appear will be - Green ☂️☂️9. Fathom is unit of - Depth of sea ☂️☂️10. J.J. Thomson received the Nobel Prize in Physics for his discovery of – Electron 🏝🏝*MOST IMPORTANT BIOLOGY QUESTIONS*🏝🏝 ══════════════════♢.✰.♢═════════════════ ☂️☂️1. Which is the ‘energy currency’ forcellular processes? - ATP ☂️☂️2. Which is the first enzyme to mix with food inthe digestivetract? - Amylase ☂️☂️3. The electromagnetic waves, which are used for satellite communication,are - Radiowaves ☂️☂️4. Which cell organelles contains DNA? - Mitochondria ☂️☂️5. Who introduced the concept of immunization to the medical world? - Edward Jenner ☂️☂️6. A solution having pH equal to zero is known as - highly acidic solution ☂️☂️7. acids is produced in human stomach? - hydrochloric acid ☂️☂️8. Which is known as 'animal starch'? - Glycogen ☂️☂️9. Which is formed from the combination of algae and fungi? -Lichens ☂️☂️10. The protein found in human hair and nail is known as - Keratin #important ✍️✍️CREDIT:-Krushna⭐️⭐️ 🏝🏝 Join Now 👉@Daily_Science_Computer_Notes

📍📍Debugging is the process of fixing a bug in the software. 📍📍Testing is the process to find bugs and errors in software. ⚡️⚡️ENIAC, short for Electronic Numerical Integrator And Computer,was the first general-purpose electronic computer. 🔹🔹Invented By :- J Presper Eckert And John Mauchly ⚡️⚡️EDVAC (Electronic Discrete Variable Automatic Computer) was one of the earliest electronic computers. Unlike its predecessor the ENIAC, it was binary rather than decimal, and was a stored program machine. 🔹🔹Invented By :- J Presper Eckert And John Mauchly ⚡️⚡️UNIVAC, which stood for Universal Automatic Computer, was developed by J. Presper Eckert and John Mauchly, makers of ENIAC, the first general-purpose electronic digital computer. These giant computers, which used thousands of vacuum tubes for computation, were the forerunners of today’s digital computers. 🔹🔹Invented By :- J Presper Eckert And John Mauchly ⚡️⚡️First Computer virus - “Creeper "- at the time of ARPANET Created by BBN technology, US ⚡️⚡️First Universally Accepted Computer virus - "Brain" - In MS-DOS OS ( Infected through 5.2" floppy Disc) Created by of two brothers, Basit and Amjad Farooq Alvi #important ✍️✍️CREDIT:-Krushna⭐️⭐️ 🏝🏝 Join Now 👉@Daily_Science_Computer_Notes

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