InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your Class 11 knowledge and support exam preparation. Choose a topic below to get started.
| 1301. |
Find the height. Above earth surface when ,g, drops at 36% of g at surface |
| Answer» | |
| 1302. |
Define seabreeze and land breeze |
| Answer» land breeze. The breeze that blows from the land toward the sea after sunset. The land cools more quickly than the ocean, cooling the air above it. The warmer air above the water continues to rise, and cooler air from over the land replaces it, creating a breeze. | |
| 1303. |
Application of pascal law in detail |
| Answer» Hydraulic Lift: The image you saw at the beginning of this article is a simple line diagram of a hydraulic lift. This is the principle of working of hydraulic lift. It works based on the principle of equal pressure transmission throughout a fluid (Pascal’s Law).The construction is such that a narrow cylinder (in this case A) is connected to a wider cylinder (in this case B). They are fitted with airtight pistons on either end. The inside of the cylinders are filled with an incompressible fluid.Pressure applied at piston A is transmitted equally to piston B without diminishing, on use of an incompressible fluid. Piston B effectively serves as a platform to lift heavy objects like big machines or vehicles. Few more applications include a hydraulic jack and hydraulic press and forced amplification is used in the braking system of most cars | |
| 1304. |
Best you tube channel for physics |
| Answer» Thanks<br>Yes no doubt<br>Physics wallah | |
| 1305. |
What is ideal gas temperature? |
| Answer» One mole of an ideal gas will occupy a volume of 22.4 liters at STP (Standard Temperature and Pressure, 0°C and one atmosphere pressure). | |
| 1306. |
Why gravitational potential energy is negative? |
| Answer» Because a negative amount of work is done to bring an object closer to the Earth, gravitational potential energy is always a negative number when using this reference point. A satellite of mass is launched from the surface of the Earth into an orbit of radius , where is the radius of the Earth. | |
| 1307. |
Application of First law of thermodynamics to adiabatic process ? |
| Answer» There is no exchange of heat energyso dq is zero. dq= du+dw ;hence du=-dw.<br>8r8r8 | |
| 1308. |
Why pressure is an scalor quantity |
| Answer» Because it has magnitude. As well as direction also<br>because it has magnitude. as well as direction also. | |
| 1309. |
Hi... Guys |
| Answer» Hlo<br>Hllo<br>Hello | |
| 1310. |
What is yield point........ |
| Answer» Tnx Yakshi and Prince. ...<br>It is the limiting point of elasticity<br>Actually it is the point which shows limit of elasticity means.....from this point object started to show plastic behaviour..... | |
| 1311. |
Define Young\'s modulus of elasticity. ............... |
| Answer» Tnx Yakshi. ...<br>???<br>Thanks yakshi ye mera bhi doubt tha<br>U can say that the ratio of longitudinal stress to longitudinal strain is known as young\'s modulus (Y) = stress/strain or......(F/A)/(dL/L)....... | |
| 1312. |
How to solve : T=½m(g-a) & ma/4=½m(g-a) |
| Answer» | |
| 1313. |
Which chapter is more imp |
| Answer» Thermodynamics and Newton "s law<br>Thermodynamic and rotational motion<br>System of particles and rotational motion<br>Oscillations and waves<br>Properties of bulk matter<br>Property of bulk matter | |
| 1314. |
How many chapters for second terminal examination |
| Answer» Yes it depend upon your school<br>It depends upon ur school | |
| 1315. |
Kya sch me Ray optics add ho gya hai class 11 me |
| Answer» In Chemestrty solid state is also added<br>Yes...first 4 chapters have been added....11(a) to 11(d)....<br>Yes<br>Yes | |
| 1316. |
Derivation of pressure exerted by an ideal gas |
| Answer» Please help | |
| 1317. |
A ball falls from a height 20cm find out the velocity which the balls hits the ground |
| Answer» V =(2gh)^1/2<br>Answer is 2.771<br>U can use formula √(2gh) | |
| 1318. |
Tension wil be applied on both string and spring |
| Answer» Yes.. | |
| 1319. |
Most important topics for exams |
| Answer» Physics? | |
| 1320. |
Yakkshi???? Do you receive my message below |
| Answer» Yes......???well....it\'s okk now.......it was my fault to interfere in ur matters....... | |
| 1321. |
What is the use of studying oscillations |
| Answer» All we are learning here are basics of what we will read in uigher classes..? | |
| 1322. |
What is Reynolds no. ???? |
| Answer» a dimensionless number used in fluid mechanics to indicate whether fluid flow past a body or in a duct is steady or turbulent.<br>The Reynolds number (Re) is an important dimensionless quantity in fluid mechanics used to help predict flow patterns in different fluid flow situations. At low Reynolds numbers, flows tend to be dominated by laminar (sheet-like) flow, while at high Reynolds numbers turbulence results from differences in the fluid\'s speed and direction, which may sometimes intersect or even move counter to the overall direction of the flow (eddy currents). | |
| 1323. |
What is banking of road and what is the significance of banking? |
| Answer» Banking of road increasing the height of road from one side its significance is that it RESUCES friction eg.. on CAR TRACKS | |
| 1324. |
A body of mass 50 kg has a volume of 0.049 m3 . The buoyant force on it is? |
| Answer» Since the net upward force must be equal to the net downward force. So, buoyant force = mg=50x9.8=49kgf<br>Can you see the answer again. Is it 49kg f?<br>Sorry sis but in the book it is given the option with the answer 49N is right but there is no solution here<br>Mass of body = 50kgvolume = 0.049 m^3Since the density of body is more than density of water, it will sink.When it sinks, it will displace equal volume of water.So volume of water displaced = 0.049 m^3mass of water = density × volume = 1000×0.049 = 49kgbuoyancy = weight of water displaced=> buoyancy= mg=> buoyancy= 49×10 = 490NHence, buoyant force is 490N<br>The buoyant force is 490 N. | |
| 1325. |
Explain why mud house are cooler in summer and warmer in winter? |
| Answer» Mud houses have thatched roofs.The insulating effect of the thatch prevents heat getting in very quickly (cool in summer) and heat getting out very quickly (warm in winter).Secondly, mud houses are made up of mud, which has large pores. So the evaporation is more in mud houses. As evaporation causes cooling, mud houses feel cooler in summers.\xa0 | |
| 1326. |
Which is more elastic steel and rubber?give reason? |
| Answer» Answer- steel Reson-By the definition, steel is more elastic than rubber because steel comes back to its original shape faster than rubber when the deforming forces are removed. Elasticity In Physics And In Common Life: In common life we label a substance as more elastic if it can be stretched more than others | |
| 1327. |
why the speed of stationary wave is zero? |
| Answer» as the wave is "standing", so the wave velocity should be 0. ... In the other hand, the energy transmitting along a standing wave is zero if we treat the standing wave as two traveling waves at opposite directions! Then it applies that the velocity of standing wave is zero. | |
| 1328. |
Hey anyone there......i hav a question.... |
| Answer» What is your question .........<br>Hyy......my ques. Is....<br>??<br>Shoot it!<br>Which question ?<br>Yes tell<br>yes tell | |
| 1329. |
The motio of planet in the solar system is an example of the conservatio of |
| Answer» Angular momentum | |
| 1330. |
Find the moment of inertia of a circular uniform disc of mass M , radius R about its tangent |
| Answer» | |
| 1331. |
hiiii friends how are you |
| Answer» Hello brother<br>hlo<br>Hyy<br>Hi??<br>Fine bro and how are u ???<br>fine and how are you<br>What is molecular physics | |
| 1332. |
Show that there is always excess pressure on the concave side of meniscus |
| Answer» | |
| 1333. |
What about the theorem which we have to prove |
| Answer» In the argument, other previously established statements, such as theorems, can be used. In principle, a proof can be traced back to self-evident or assumed statements, known as axioms, along with accepted rules of inference. | |
| 1334. |
Explain doppler effect |
| Answer» Doppler Effect is the shift in frequency of light when there is relative motion between the source and observer. It is used to measure the speed of a receding object. | |
| 1335. |
2nd law is real law |
| Answer» Proof. When we can show that Newton’s first and third law are contained in the second law, then we can say that it is the real law of motion.(i) First law is contained in second law: According to Newton’s second law of motion,It means that there will be no acceleration in the body if no external force is applied. This represents that a body at rest will remain at rest and a body in uniform motion will continue to move along the same straight line in the absence of an external force. This corresponds to Newton’s first law of motion. So, first law of motion is contained in Second law of motion<a data-download-href="//ask.learncbse.in/uploads/db3785/0df3e1ffe6188e8543d580699d10dcd34de3b909" href="http://ask.learncbse.in/uploads/db3785/original/2X/0/0df3e1ffe6188e8543d580699d10dcd34de3b909.png" title="Prove that Newtons second law is the real law of motion_1.png"></a> | |
| 1336. |
Any one from saharsa please tell me |
| Answer» Yeah_i am from saharsaSo__what:)<br>aditi tum saharsa sa ho kiya<br>???<br>or agar patori panchgachiya ka v koi hoga to bolna | |
| 1337. |
विमीय सूत्र क्या है |
| Answer» Ook !!! Its dimension formula..<br>Question - What is dimensional formula? Answer - The dimensional formula is defined as the expression of the physical quantity in terms of its basic unit with proper dimensions. For example, dimensional force is. F = [M L T-2] It\'s because the unit of Force is Netwon or kg*m/s2<br>U are right yakshi mujhe bhi kuch samaj nahi aaya<br>WOW!!!!kuchh samaj nai aaya? | |
| 1338. |
Define Terminal velocity !!! ____???___ |
| Answer» Wlcm friend<br>Thankx priya ??<br>Terminal velocity -the constant speed that a freely falling object eventually reaches when the resistance of the medium through which it is falling prevents further acceleration. | |
| 1339. |
Stokes\' law ✌✌✌ |
| Answer» an expression describing the resisting force on a particle moving through a viscous fluid and showing that a maximum velocity is reached in such cases, e.g. for an object falling under gravity through a fluid.<br>the force required to move a sphere through a given viscous fluid at a low uniform velocity is directly proportional to the velocity and radius of the sphere | |
| 1340. |
Derviation of bernouli\'s theorm |
| Answer» | |
| 1341. |
When a object moving straight what is acceleration and velocity |
| Answer» The acceleration would be zero because acceleration is defined as the change in an object’s velocity over a period of time. Velocity is a vector, which means it has a magnitude and direction. Speed is a scalar quantity, which means it only has a magnitude. Therefore if an object has a constant speed in a direction during a set period of time, meaning it has a constant velocity, there will be no acceleration. | |
| 1342. |
Derive the expression of gravitational potential at a distance r from the centre of earth. |
| Answer» When a object moving straight what is acceleration and velocity | |
| 1343. |
Can I get explaination of practicals |
| Answer» | |
| 1344. |
Derive stocks law by dimensional analysis |
| Answer» Dimensional analysis proof of Stokes\' LawSuppose that the sphere has radius r and falls through a fluid of viscosity η. Let the terminal velocity be v .\xa0We can calculate the viscous drag F on the sphere by dimensional analysis.If F = krxηyvzWe have MLT-2 = Lx(ML-1T-1)y(LT- 1)zSolving this gives x = 1, y = 1 and z = 1.By other methods k can be shown to be 6π.F = 6πηrv | |
| 1345. |
Why the heat engine efficiency is not 100%? |
| Answer» It is ? all because of second law of thermodynamics!!!!!! It puts a fundamental limit on the thermal efficiency of all heat engines. Even an ideal, frictionless engine can\'t convert anywhere near 100% of its input heat into work. That\'s all, may be this will help you.?<br>it isbut only in ideal heat engine | |
| 1346. |
Effect of shape of earth |
| Answer» Shape of earth is not a part perfect sphere . so, equator radius is large in size as compared to pole radius . so gravitation at pole is high because less radius and equator have low gravition force because of high radius . so this is effect of shape of earth | |
| 1347. |
any girl name surbhi verma jiska no 99 sa start hota h |
| Answer» Why ??<br>Why are u asking??????<br>plese tell me | |
| 1348. |
Inertia is vector or scelar |
| Answer» Inertia of a body is the measure of the body\'s resistance towards its own acceleration. Thus mass becomes a qualitative measureof its inertia.\xa0Mass is scalar, thus linear inertia is scalar.Rotational Inertia or Moment of Inertia is given by I = MR2 , It is a tensor that means it is neither a scalar nor is a vector. | |
| 1349. |
What is the moment of inertia of an uniform triangle about any edge ?? |
| Answer» | |
| 1350. |
What is SHM ? Explain in brief |
| Answer» Simple harmonic motion<br>Thanks priya and Ayushi<br>harmonic motion of constant amplitude in which the acceleration is proportional and oppositely directed to the displacement of the body from a position of equilibrium :- the projection on any diameter of a point in uniform motion around a circle.<br>The classic example of this is a mass on a spring, because the more the mass stretches it, the more it feels a tug back towards the middle. A mass on a spring can be vertical, in which case gravity is involved, or horizontal on a smooth tabletop.If you imagine pulling a mass on a spring and then letting go, it will bounce back and forth around an equilibrium position in the middle. Like with all simple harmonic motion, the velocity will be greatest in the middle, whereas the restoring force (and therefore acceleration) will be greatest at the outside edges (at the maximum displacement). Another example of simple harmonic motion is a pendulum, though only if it swings at small angles.<br>In mechanics and physics, simple harmonic motion is a special type of periodic motion or oscillation motion where the restoring force is directly proportional to the displacement and acts in the direction opposite to that of displacement.<br>Please answer this question | |