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Telugu Sandhulu & Samasalu | సంధులు: I. సంస్కృత సంధులు, II. తెలుగు సంధులు.

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Explain with the help of an activity that current carrying wire produces magnetic field.

10th class 4 marks AP State Board Electromagnetism Physical Science

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Draw a neat Diagram of DC Electric Motor and label its parts

4 marks AP State Board Electromagnetism Physical Science

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Why do we use Fuses in Household Circuits?

4 marks AP State Board Electric Current Physical Science

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What do you mean by electric shock? Explain how it takes place.

4 marks AP State Board Electric Current Physical Science

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Explain Kirchoff's laws with examples.

4 marks AP State Board Electric Current Physical Science

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Derive the expression for the Equivalent Resistance of three resistors connected in Parallel.

4 marks AP State Board Electric Current Physical Science

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Derive the expression for the equivalent resistance of three resistors connected in Series.

4 marks AP State Board Electric Current Physical Science

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What happens to the water when wet clothes dry?

4 marks AP State Board Heat Physical Science

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Explain the procedure of finding Specific heat of a solid experimentally.

4 marks AP State Board Heat Physical Science

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Write the differences between Evaporation and Boiling.

4 marks AP State Board Heat Physical Science

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Explain the formation of Mirage.

4 marks AP State Board Light Refraction at Plane Surfaces Physical Science

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Write the differences between Evaporation and Boiling.

Write the differences between Evaporation and Boiling. (or) Mention the different processes that change liquids to gases and compare them. (or) Ravi asked a doubt "Is sea water evaporates or boils?" ? Give the answer to him by comparing the two processes. Answer : There are two processes that changes liquids to gases. They are Evaporation and Boiling. There are some differences between Evaporation and Boiling... Evaporation Boiling 1. The process of escape of molecules from the surface of a liquid at any temperature is called Evaporation. 1. The process of changing of liquid phase to gaseous phase at a constant temperature is called Boiling. 2. Occurs at any temperature. 2. Only occurs at certain temperature. 3. The temperature of the system gets down. 3. The temperature of the system increases upto boiling point. 4. It depends on surface area, humidity, temperature and wind speed. 4. It depends upon the nature

Why do we use Fuses in Household Circuits?

Answer: 1. To prevent damages due to overloading, we connect an electric fuse in Household circuits. 2. When a fuse is connected, the entire current in house will flow through it. 3. The fuse consists of a thin wire with low melting point. 4. When the current in fuse is overloaded, the thin wire will heat up and melt. 5. Now the circuit becomes open and current flow stops in circuit. So all electrical devices are saved from damage due to overload.

What happens to the water when wet clothes dry?

What happens to the water when wet clothes dry? (or) How does the evaporation process takes place in clothes? Answer : Wet clothes dry due to evaporation of water. The water molecules in wet clothes absorbs heat from the outer surroundings. The molecules which are on the clothes surface gets more energy and evaporation takes place. However, some molecules after going into air, return back and settle on the clothes surface. When the number of escaping molecules are more than the number of returning molecules, wet clothes dry. When there is more wind, the molecules which are escaped does not return back to the surface. So, clothes dry faster when wind is blowing.

Explain the formation of Mirage.

Explain the formation of Mirage. (or) Sometimes during the hot summer days, it appears that there is water on the road, but there would really be no water. What do you call this phenomenon? Explain why it happens. Answer: During hot summer days, it appears that there is water on the road. But when we go there, we don't find any water. This phenomenon is called as 'Mirage'. It occurs due to refraction of light. During hot days, air above the road surface is very hot and air at higher altitudes is cool. As the density of air increases with height, Refractive Index of air increases with density. The cooler air at the top has greater refractive index and the hotter air at the surface has low refractive index. If we take any two layers of air, upper layers are denser and lower layers are rarer. So light rays travel far away from Normal. When the light rays pass through particular layer where incident angle is greater than critical angle, Light rays reflect back due to Total Inte

Explain the procedure of finding Specific heat of a solid experimentally.

Explain the procedure of finding Specific heat of a solid experimentally. (or) Determine the experment to find out the Specific heat of a solid. Answer : Aim : To find out the Specific Heat of a solid experimentally. Apparatus : Calorimeter, Thermometer, Stirrer, Water, Steam Heater, Wooden box and Lead Shots. Procedure : Measure the mass of calorimeter with stirrer = m 1 gm Fill the water in Calorimeter and measure the mass = m 2 gm and mark it's temperature as T 1 . Mass of the water = (m 2 - m 1 ) gm . Take few lead shots in steam heater and heat up to 100℃. Let this temperature be T 2 . Pour lead shots into calorimeter and measure the final temperature T 3 . Mass of Calorimeter with Water and Leadshots is m 3 gm . Mass of lead shots = (m 3 - m 2 ) gm . Consider the Specific Heats of Calorimeter, Lead shots and water be S c , S l and S w respectively. We know that Heat lost by hot body = Heat gained by cold bodies. (m 3 - m 1 )S l (T 2 - T 3 ) = m 1 S c (T 3 - T 1

Explain with the help of an activity that current carrying wire produces magnetic field.

Answer: Take a thermocol sheet and fix two thin wooden sticks which have small slit at top of their ends as shown in the above figure. Arrange a 24 guage copper wire by passing through these slits and make a circuit. The circuit consists of a 9 Volt battery, key and copper wire connected in series. Now keep a magnetic compass below the wire and bring a bar magnet close to the compass. The needle in the compass deflects due to magnetic field produced by bar magnet. Now take the bar magnet away and switch on the circuit. Observe the compass needle. Again the compass needle deflects due to magnetic field produced by the current carrying wire. Thus we can say that current carrying wire produces magnetic field.

Explain why dogs pant during hot summer days?

Explain why dogs pant during hot summer days using the concept of Evaporation. (or) What is Evaporation? How does it is useful to the animals which have no sweat glands? (or) You know dogs do not have sweat glands. How does they cool their bodies? Answer : Evaporation : The escape of molecules from the surface of a liquid at any temperature is called “Evaporation”. It is a cooling process. By the Evaporation of sweat, human beings cool their bodies. Dogs do not have sweat glands like human beings. By panting, saliva evaporates from their tongue. This cools down their body.

Draw a neat Diagram of DC Electric Motor and label its parts

Electric Motor (DC)

Telugu Sandhulu & Samasalu | సంధులు: I. సంస్కృత సంధులు, II. తెలుగు సంధులు.

సంధులు: I. సంస్కృత సంధులు, II. తెలుగు సంధులు. సంస్కృత సంధులు: 1. సవర్ణదీర్ఘ సంధి 2. గుణ సంధి 3. వృద్ధి సంధి 4. యణాదేశ సంధి 5. జశ్త్వ సంధి 6. శ్చుత్వ సంధి 7. అనునాసిక సంధి 8. విసర్గ సంధి 9. పరసవర్ణ సంధి 10. పరరూప సంధి తెలుగు సంధులు: 1. ఉత్వ సంధి 2. ఇత్వ సంధి 3. అత్వ సంధి 4. యడాగమ సంధి 5. టుగాగమ సంధి 6. రుగాగమ సంధి 7. దుగాగమ సంధి 8. నుగాగమ సంధి 9. ద్విరుక్తటకార సంధి 10. సరళాదేశ సంధి 11. గ, స, డ, ద, వా దేశ సంధి 12. ఆమ్రేడిత సంధి 13. పుంప్వాదేశ సంధి 14. త్రిక సంధి 15. పడ్వాది సంధి 16. ప్రాతాది సంధి 17. లు, ల, నల సంధి సంధులకు సంబంధించి ఒక పదాన్నిచ్చి దాన్ని సరిగా విడదీయమని అడుగుతారు. లేదా విభజించిన రూపాన్నిచ్చి సరిగా కలుపమని అడుగుతారు. సంధి సూత్రాలు రాయాల్సిన అవసరం లేకపోయినా అవగాహన కోసం సూత్రాలు తెలుసుకోవడం మంచిది. సంస్కృత సంధులు 1. సవర్ణదీర్ఘ సంధి అ-ఇ-ఉ-ఋలకు అవే అచ్చులు పరమైనా వాటి దీర్ఘాలు ఏకాదేశమవడాన్ని సవర్ణ దీర్ఘ సంధి అంటారు. ఉదా: రామ + ఆజ్ఞ = రామాజ్ఞ మహి + ఈశుడు = మహీశుడు గురు + ఉపదేశం = గురూపదేశం పితృ + ఋణం = పితౄణం 2. గుణ సంధి: అకారానికి ఇ-ఉ-ఋలు పరమైతే క్రమంగా ఏ-ఓ-అర్‌లు ఏకాదేశ మవ

Derive the expression for the Equivalent Resistance of three resistors connected in Parallel.

Answer: 1. When Resistors are connected in Parallel, they gets same amount of Potential Difference. 2. We know that, in a Parallel Combination, the total current flowing in the circuit is equal to the sum of the currents flowing accross each resistor. Therefore, I = I 1 + I 2 + I 3 .........(Eq. 1) 3. The Potential Difference( V ) remains constant accross all the resistors. 4. Connect the circuit as shown in the figure. 5. The current( I ) gets divided into 3 parts I 1 ,I 2 ,I 3 accross R 1 ,R 2 ,R 3 respectively. 6. Let the equivalent resistance provided by all the three resistors be R eq . 7. According to the ohm's law, R eq = V/I I = V/R eq 8. The currents I 1 ,I 2 and I 3 accross R 1 ,R 2 and R 3 are given by I 1 =V/R 1 , I 2 =V/R 2 , I 3 =V/R 3 . From Eq. 1, I = I 1 + I 2 + I 3 V/R eq = V/R 1 + V/R 2 + V/R 3 V(1/R eq ) = V(1/R 1 + 1/R 2 + 1/R 3 ) 1/R eq = 1/R 1 + 1/R 2

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