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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 1251. |
How does heat transfer take place by convection? Give any example to support your answer. |
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Answer» How does heat transfer take place by convection? Give any example to support your answer. |
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| 1252. |
a farmer has to go 6m due north 8m due east and 10m due upwards to reach his field. find dis†an ce and displacement |
| Answer» a farmer has to go 6m due north 8m due east and 10m due upwards to reach his field. find dis†an ce and displacement | |
| 1253. |
3.A train is running at a constant speed of 90km/h on a straight track . a person standing at the top of a boggey moves in the direction of motion of the train such that he covers 1 metres on the train each second. The speed of the person with respect to ground is |
| Answer» 3.A train is running at a constant speed of 90km/h on a straight track . a person standing at the top of a boggey moves in the direction of motion of the train such that he covers 1 metres on the train each second. The speed of the person with respect to ground is | |
| 1254. |
What is the approximate peak value of an alternating current producing four times the heat produced per secondby a steady current of 2 A in a resistor?(1) 2.8 A(2) 4.0 A(4) 8.0 A(3) 5.6 A |
| Answer» What is the approximate peak value of an alternating current producing four times the heat produced per secondby a steady current of 2 A in a resistor?(1) 2.8 A(2) 4.0 A(4) 8.0 A(3) 5.6 A | |
| 1255. |
From the given options, choose the correct region where it is possible to build an igloo. |
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Answer» From the given options, choose the correct region where it is possible to build an igloo. |
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| 1256. |
How do airplane fly? Is itrelated to air pressure ? If yes then how ? n nt |
| Answer» How do airplane fly? Is itrelated to air pressure ? If yes then how ? n nt | |
| 1257. |
8. A rectangular block of glass is placed on a printed page lying on a horizontalsurface. The minimum value of the refractive index of glass for which theletters on the page are not visible from any of the vertical faces of block is(A) >V3(B) V2(C)> 1.55(D) 1.38 |
| Answer» 8. A rectangular block of glass is placed on a printed page lying on a horizontalsurface. The minimum value of the refractive index of glass for which theletters on the page are not visible from any of the vertical faces of block is(A) >V3(B) V2(C)> 1.55(D) 1.38 | |
| 1258. |
A train travels from one station to another at a speed of 40 km/hour and returns to the first station at a speed of 60 km/hour. The average speed of the train is how many? |
| Answer» A train travels from one station to another at a speed of 40 km/hour and returns to the first station at a speed of 60 km/hour. The average speed of the train is how many? | |
| 1259. |
A body is traveling in a straight line. It moves AB that is 5 m towards the east, BC that is 4 m towards noth-east while making 30o with north and CD that is 7 m in the west direction. Calculate the resultant displacement. [2 MARKS] |
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Answer» A body is traveling in a straight line. It moves AB that is 5 m towards the east, BC that is 4 m towards noth-east while making 30o with north and CD that is 7 m in the west direction. Calculate the resultant displacement. [2 MARKS] |
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| 1260. |
What is the difference between the sound produced by regular and irregular vibrations? |
| Answer» What is the difference between the sound produced by regular and irregular vibrations? | |
| 1261. |
The vector product of parallel vectors is always: |
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Answer» The vector product of parallel vectors is always: |
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| 1262. |
A bullet travelling with a velocity of 100m/s is able to penetrate the plank 4cm thick. The velocity of the bullet required to just penetrate a plank of 25cm thickness |
| Answer» A bullet travelling with a velocity of 100m/s is able to penetrate the plank 4cm thick. The velocity of the bullet required to just penetrate a plank of 25cm thickness | |
| 1263. |
Reflected light can be reflected again.This principle is used in the which of the following instruments? |
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Answer» Reflected light can be reflected again.This principle is used in the which of the following instruments? |
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| 1264. |
the total charge of the electron present in 72 g of water |
| Answer» the total charge of the electron present in 72 g of water | |
| 1265. |
An engine develops 20 kW of power. How much time will it take to slowly lift a mass of 100 kg to a height of 20 m?(g=10 m/s2) |
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Answer» An engine develops 20 kW of power. How much time will it take to slowly lift a mass of 100 kg to a height of 20 m? |
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| 1266. |
Two men stand a certain distance apart beside a long metalfence on a still day; one man places his ear against the fencewhile the other gives the fence a sharp knock with a hammer.Two sounds separated by a time interval of 0.5 second are i 41heard by the first man. If the velocity of sound in air is330 ms and in the metal is 5280 ms 1, how far apart are the men?(1) 352 m(3) 165 m(2) 330 m(4) 176 m |
| Answer» Two men stand a certain distance apart beside a long metalfence on a still day; one man places his ear against the fencewhile the other gives the fence a sharp knock with a hammer.Two sounds separated by a time interval of 0.5 second are i 41heard by the first man. If the velocity of sound in air is330 ms and in the metal is 5280 ms 1, how far apart are the men?(1) 352 m(3) 165 m(2) 330 m(4) 176 m | |
| 1267. |
Match the roling element bearings with the most appropriate loading condition Bearing-type Loading condition (a) Ball bearing (p) Tangential load (b) Roller bearing (q) Radial load (c) Needle bearing (r) Heavy radial load with impact (d) Taper roller bearing (s) Light radial load with space limitation (t) Heacy radial and axial load (u) Fatiguw load |
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Answer» Match the roling element bearings with the most appropriate loading condition
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| 1268. |
3.For the equilibrium C(s)+ COg) gives 2CO(g) Kp is 63 atm at 1000 K. If at equilibrium Pco=10Pco2 then total pressure at equilibrium is : 4.A(g) is 90 % converted in to B according to the reaction A(g)gives 3B(g) value of (D/d) at this point i |
| Answer» 3.For the equilibrium C(s)+ COg) gives 2CO(g) Kp is 63 atm at 1000 K. If at equilibrium Pco=10Pco2 then total pressure at equilibrium is : 4.A(g) is 90 % converted in to B according to the reaction A(g)gives 3B(g) value of (D/d) at this point i | |
| 1269. |
Which of the following ways will NOT cause a magnet to lose its magnetism? |
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Answer» Which of the following ways will NOT cause a magnet to lose its magnetism? |
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| 1270. |
A Person Travels Half A Distance With Speed 40 km/h and remaining with a speed of 60 km/h. Find Out Average Speed? |
| Answer» A Person Travels Half A Distance With Speed 40 km/h and remaining with a speed of 60 km/h. Find Out Average Speed? | |
| 1271. |
What is the nature of the force which is experienced between an electron and a proton? |
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Answer» What is the nature of the force which is experienced between an electron and a proton? |
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| 1272. |
In domestic circuits, the appliances are generally connected in ___ . |
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Answer» In domestic circuits, the appliances are generally connected in ___ . |
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| 1273. |
When is a body said to be in motion? |
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Answer» When is a body said to be in motion? |
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| 1274. |
A body moving with uniform retardation covers 3 km before its speed is reduced to half of its initial value . It comes to rest in another distance of |
| Answer» A body moving with uniform retardation covers 3 km before its speed is reduced to half of its initial value . It comes to rest in another distance of | |
| 1275. |
in a potentiometer experiment the balancing length for a cell was found to be 1.20m now a resistance of 10 ohm is connected across the terminal of this cell and the balancing length becomes 80cm .the internal resistance of the cell |
| Answer» in a potentiometer experiment the balancing length for a cell was found to be 1.20m now a resistance of 10 ohm is connected across the terminal of this cell and the balancing length becomes 80cm .the internal resistance of the cell | |
| 1276. |
Question 4Two charged objects are brought close to each other. What kind of interaction can be observed? |
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Answer» Question 4 Two charged objects are brought close to each other. What kind of interaction can be observed? |
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| 1277. |
when current supplied by a cell to a circuit is 0.3 A ,its terminal potential difference is 0.9 V.when the current supplied becomes 0.25 A , its terminal potential difference becomes 1.0 V . The internal resistance of the cell is |
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Answer» when current supplied by a cell to a circuit is 0.3 A ,its terminal potential difference is 0.9 V. when the current supplied becomes 0.25 A , its terminal potential difference becomes 1.0 V . The internal resistance of the cell is |
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| 1278. |
50. a mixture of 20ml if methane and 20ml of O2 is ezplosed and cooled at room temp if the reaction between the two substance is written as CH4+2O2--->CO2+H2O The final volume of gas mixture is a)10ml b)30ml c)20ml d)60ml And given is 20ml . HOW? |
| Answer» 50. a mixture of 20ml if methane and 20ml of O2 is ezplosed and cooled at room temp if the reaction between the two substance is written as CH4+2O2--->CO2+H2O The final volume of gas mixture is a)10ml b)30ml c)20ml d)60ml And given is 20ml . HOW? | |
| 1279. |
___ helps us announce a cyclone alert. |
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Answer» |
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| 1280. |
What physical quantity is given by slopes of isothermal and adiabatic curves ? |
| Answer» What physical quantity is given by slopes of isothermal and adiabatic curves ? | |
| 1281. |
A bus covers first 2km of distance with a speed of 36km/h and next 2km distance with speed of 72km/h.Find the average speed. |
| Answer» A bus covers first 2km of distance with a speed of 36km/h and next 2km distance with speed of 72km/h.Find the average speed. | |
| 1282. |
Can you please provide me the notes of Heat chapter . |
| Answer» Can you please provide me the notes of Heat chapter . | |
| 1283. |
Two plane mirrors are initially inclined at 30° and they are moved apart by 30° each time, till the angle between them becomes 120°. If an object is placed symmetrically between them then find the sum of all the images formed. |
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Answer» Two plane mirrors are initially inclined at 30° and they are moved apart by 30° each time, till the angle between them becomes 120°. If an object is placed symmetrically between them then find the sum of all the images formed. |
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| 1284. |
Why is it difficult to predict the weather |
| Answer» Why is it difficult to predict the weather | |
| 1285. |
What is electromagnetic spectrum? Name the radiation which has longest wavelength? |
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Answer» What is electromagnetic spectrum? Name the radiation which has longest wavelength? |
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| 1286. |
What is the source of sun energy |
| Answer» What is the source of sun energy | |
| 1287. |
Which substance can be used in a thermometer in place of mercury? |
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Answer» Which substance can be used in a thermometer in place of mercury? |
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| 1288. |
In photosynthesis, which energy conversion takes place? |
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Answer» In photosynthesis, which energy conversion takes place? |
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| 1289. |
A child staying in a coastal region tests the drinking water and also the seawater with his tester. He finds that the compass needle deflects more in the case of seawater. Can you explain the reason? |
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Answer» A child staying in a coastal region tests the drinking water and also the seawater with his tester. He finds that the compass needle deflects more in the case of seawater. Can you explain the reason? |
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| 1290. |
Give one use each for good and bad conductors of heat. |
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Answer» Give one use each for good and bad conductors of heat. |
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| 1291. |
A bus travels a distance of 120km with a speed of 40km/h and returns with a speed of 30km/h. Calculat the average speed for the entire journey. |
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Answer» A bus travels a distance of 120km with a speed of 40km/h and returns with a speed of 30km/h. Calculat the average speed for the entire journey. |
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| 1292. |
A particle travels along a semi circle path ACB the radius is 14 meters. Find the displacement |
| Answer» A particle travels along a semi circle path ACB the radius is 14 meters. Find the displacement | |
| 1293. |
When do we use this formula of acceleration : v dv/dx ? |
| Answer» When do we use this formula of acceleration : v dv/dx ? | |
| 1294. |
Cells connected in parallel increase the ___ of both the bulb and the cell. |
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Answer» Cells connected in parallel increase the |
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| 1295. |
Question 23How is the phenomenon of reflection used in making a kaleidoscope? What are the applications of a kaleidoscope? |
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Answer» Question 23 How is the phenomenon of reflection used in making a kaleidoscope? What are the applications of a kaleidoscope? |
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| 1296. |
What energy conversion occurs in a torch? |
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Answer» What energy conversion occurs in a torch? |
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| 1297. |
An electromagnet is an application of the phenomenon of ________ effect of electric current. |
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Answer» An electromagnet is an application of the phenomenon of ________ effect of electric current. |
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| 1298. |
A cyclist is riding on a circular path of radius 5m with a speed of 10m/s.What is the change in velocity when he has travelled through a semicircle? |
| Answer» A cyclist is riding on a circular path of radius 5m with a speed of 10m/s.What is the change in velocity when he has travelled through a semicircle? | |
| 1299. |
The electric bulb will glow only when the circuit ______. |
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Answer» The electric bulb will glow only when the circuit ______. |
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| 1300. |
4.Find the current drawn from a cell of emf 1V and internal resistance 2/3 ohm connected to the network shown in figure. |
| Answer» 4.Find the current drawn from a cell of emf 1V and internal resistance 2/3 ohm connected to the network shown in figure. | |