InterviewSolution
Saved Bookmarks
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.
| 1251. |
Law of equipartition. Of energy |
| Answer» The law states that: “In thermal equilibrium, the total energy of the molecule is divided equally among all Degrees of Freedom of motion”.According to the law of equipartition of energy, for any dynamic system in thermal equilibrium, the total energy for the system is equally divided among the degree of freedom. | |
| 1252. |
Why ice only freeze on the surface of lakes but not at bottom |
| Answer» Because at bottom the density of water at bottom is maximum and due to anamolous behaviour of water at maximum density the temperature of water is 4 C thats why it not freezes | |
| 1253. |
Why heavy gates get force at right angle while closing and opening? |
| Answer» Force is applied at the outer edge of the lever(here the door) as there is increased `leverage`. This is because at this case R (distance from hinge) is more .Since torque = F × R., increase in R would lead to increase in torque, hence easier the work. | |
| 1254. |
Is there a negative sign in conduction formula? |
| Answer» No.the lower temperature is always subtract from higher temperature .as a result it is always positive. | |
| 1255. |
More offline test available there |
| Answer» | |
| 1256. |
Derive the equation of adiabatic process That is PV^gaama=constant |
| Answer» Here dq=0, we know dq=du+dw0=ncdt+pdv use formulae of cp-cv=r and others and u will get pv^gamma constant | |
| 1257. |
Is ray optics in syllabus |
| Answer» Yes<br>Ofcourse yes<br>Yes<br>Yes it is there<br>Yes | |
| 1258. |
What is emmise power |
| Answer» | |
| 1259. |
Prove that Cp - Cv = R. |
| Answer» Derivation:ΔU = ΔQ + ΔW ΔU = Cv ΔT (At pressure is constant)ΔQ = Cp ΔT (At pressure is constant)ΔW = -P ΔV (Negative since the calculation been complete)Pv = RT (1 mole of gas)Because of pressure is constant, R is also constantChange in V will make change in TPΔV = R ΔTCv ΔT = CpΔT - RΔTDivided by ΔTCv = Cp - RCp - Cv = R | |
| 1260. |
What is the acent formula |
| Answer» It is :- u sin theta/g | |
| 1261. |
What is the gravity |
| Answer» Gravity, also called gravitation, is a force that exists among all material objects in the universe. For any two objects or particles having nonzero mass, the force of gravity tends to attract them toward each other.<br>It is the force of attraction between the earth and any object lying on or near the surface of the earth<br>It is the force of attraction which attract any object towards the earth....<br>the force that attracts a body towards the centre of the earth, or towards any other physical body having mass<br>In physics, gravity is the natural force that causes things to fall toward the earth. For example When a boy accidentally drops a book from his hand. The book is pulled towards the Earth by the force of gravity .<br>the natural force that makes things fall to the ground when you drop them | |
| 1262. |
Define V=u+at from velocity -time graph |
| Answer» | |
| 1263. |
Define heat and transfer and its function |
| Answer» | |
| 1264. |
Ncert example for chapter 14 |
| Answer» Your u right avneet<br>?? well see in ncert book? | |
| 1265. |
Define the derivation of total energy in SHM. |
| Answer» | |
| 1266. |
Total energy in SHM derivation |
| Answer» | |
| 1267. |
State and prove bernoullie\'s theorem |
| Answer» Sum of pressure energy, kinetic energy and potential energy is constant. | |
| 1268. |
Bernauli theorem |
| Answer» P+ pgh + 1/2pv^2 =constant.......( Here:- p= row(density)) | |
| 1269. |
what is principle of superposition? |
| Answer» The principle of superposition may be applied to waves whenever two (or more) waves travelling through the same medium at the same time. The waves pass through each other without being disturbed. The net displacement of the medium at any point in space or time, is simply the sum of the individual wave displacements. | |
| 1270. |
Define Carnot theorem |
| Answer» Nice answer Priya<br>Thank u aman<br>\tCarnot Engine is a reversible engine.\tCarnot\'s theorem consists of two parts (i) no engine working between two given temperatures can be more efficent than a reversible Carnot engine working between same source and sink. (ii) all reversible engines working between same source and sink (same limits or temperature) have the same efficiency irrespective the working substance.<br>Nice answer and H B D Priya?<br>The principle that no engine operating between two given temperatures can be more efficient than a Carnot engine operating between the same temperatures. | |
| 1271. |
State and explain theorem of parallel axis? |
| Answer» The moment of inertia of a body about any axis is equal to the sum of the moments of inertia of the body about a parallel axis passing through its centre of mass and the product of its mass and the square of distance between the two parallel axes. formulae is I=Ig+Md^2<br>The Parallel Axis Theorem states that a bodies moment of inertia about any given axis is the moment of inertia about the centroid plus the mass of the body times the distance between the point and the centroid squared. | |
| 1272. |
merry Christmas all of u guys |
| Answer» Merry Christmas<br>Merry Christmas<br>Same to you .......????? | |
| 1273. |
What is the height of geostationary satellite from the earth\'s surface in terms of R |
| Answer» R/2<br>6R | |
| 1274. |
What do you mean by magnitude |
| Answer» Magnitude is the product of numerical value and unit<br>Magnitude represents the size of the physical quantity.Magnitude is like how much that physicalo quantitiy is.ExampleIf we say 4 secondHere 4 represents the magnitude of the time.<br>Or any coefficient of variables<br>Any number | |
| 1275. |
Merry Christmas ??? |
| Answer» Merry christmas. May this christmas bring u a blossom of happiness and joy ????<br>Merry Christmas<br>Merry Christmas ??☺️☺️✌️ | |
| 1276. |
Concept of pressure exerted bye most probable speed |
| Answer» | |
| 1277. |
R×F= |
| Answer» ?????????????<br>??<br>????<br>R×F = TORQUE<br>RF?? | |
| 1278. |
Define Mayer\'s formula |
| Answer» The difference between the specific heat of a gas at constant pressure( cp ) and its specific heat at constant( cv ) volume is equal to the universal gas constant(R) divided by the molecular weight(M) of the gas. i.e. cp−cv=RM .This relation is known. as Mayer\'s formula. | |
| 1279. |
Find the pressure |
| Answer» , P = F/A. | |
| 1280. |
Is rules of integration important for class 11 final test |
| Answer» Off course<br>Yes ? off course...<br>Yep,its imp. Coz. It is used in driving many theore and also used in eq. Of mation<br>I think so no<br>Not important<br>It may important<br>Not sure but it may be important | |
| 1281. |
At NTPwarer boils at 100c deep down mines ,water will down at a temprature |
| Answer» | |
| 1282. |
What happened when door of refrigerater left open? |
| Answer» Room will become hot<br>If the room is closed the room become hot<br>All the gas which is in refrigerator will went out | |
| 1283. |
anyone from allen kota from jee+advanced |
| Answer» ???????<br>Ok good<br>ha<br>Kya aap compedition ki tyari kar rhr ho | |
| 1284. |
out of the four fundamental force which force is weakest and which is strongest |
| Answer» Gravitational force is weakest | |
| 1285. |
Lambda is directly proportional to h/mv |
| Answer» | |
| 1286. |
When is the tension maximum in the string of simple pendulum. What is its value? |
| Answer» Tension maximum in the string of simple pendulum is at the bottom....and its value is :- 6mg | |
| 1287. |
What are the differences between stress and strain?? |
| Answer» \t <div style="border:0px; margin:0px; padding:0in 5.4pt">S.no</div> <div align="center" style="border:0px; margin:0px; padding:0in 5.4pt; text-align:center">Stress</div> <div align="center" style="border:0px; margin:0px; padding:0in 5.4pt; text-align:center">Strain</div> <div style="border:0px; margin:0px; padding:0in 5.4pt; text-align:center">1.</div> <div style="border:0px; margin:0px; padding:0in 5.4pt">Stress is defined as the resisting force per unit area.</div> <div style="border:0px; margin:0px; padding:0in 5.4pt">Strain is defined as the deformation per unit area.</div> <div style="border:0px; margin:0px; padding:0in 5.4pt; text-align:center">2.</div> <div style="border:0px; margin:0px; padding:0in 5.4pt">The ratio of resisting force ( or applied load) to the cross section area of the body is called stress.</div> <div style="border:0px; margin:0px; padding:0in 5.4pt">The ratio of change in dimension of the body to the original dimension is called strain.</div> <div style="border:0px; margin:0px; padding:0in 5.4pt; text-align:center">3.</div> <div style="border:0px; margin:0px; padding:0in 5.4pt">Stress is denoted by the Greek symbol ‘σ’ ( sigma).</div> <div style="border:0px; margin:0px; padding:0in 5.4pt">Strain is denoted by the symbol ‘e’.</div> <div style="border:0px; margin:0px; padding:0in 5.4pt; text-align:center">4.</div> <div style="border:0px; margin:0px; padding:0in 5.4pt">The formula of stress is given by</div> <div style="border:0px; margin:0px; padding:0in 5.4pt">\xa0</div> <div style="border:0px; margin:0px; padding:0in 5.4pt"></div> \xa0 <div style="border:0px; margin:0px; padding:0in 5.4pt">The formula of strain is given by</div> <div style="border:0px; margin:0px; padding:0in 5.4pt">\xa0</div> <div class="separator" style="border:0px; margin:0px; padding:0in 5.4pt; text-align:center"></div> <div style="border:0px; margin:0px; padding:0in 5.4pt">\xa0</div> <div style="border:0px; margin:0px; padding:0in 5.4pt; text-align:center">5.</div> <div style="border:0px; margin:0px; padding:0in 5.4pt">The unit<a href="http://www.mechanicalbooster.com/2016/09/units-of-stress.html" style="border:0px; font-variant:inherit; font-stretch:inherit; line-height:inherit; font-family:inherit; font-style:inherit; font-weight:inherit; margin:0px; outline:0px; padding:0px; vertical-align:baseline; color:#289dcc; text-decoration-line:none" target="_blank"> </a>of<a href="http://www.mechanicalbooster.com/2016/09/units-of-stress.html" style="border:0px; font-variant:inherit; font-stretch:inherit; line-height:inherit; font-family:inherit; font-style:inherit; font-weight:inherit; margin:0px; outline:0px; padding:0px; vertical-align:baseline; color:#289dcc; text-decoration-line:none" target="_blank"> </a>stress is N/m2 or N/mm2.</div> <div style="border:0px; margin:0px; padding:0in 5.4pt">Strain is a unitless quantity.</div> <div style="border:0px; margin:0px; padding:0in 5.4pt; text-align:center">6.</div> <div style="border:0px; margin:0px; padding:0in 5.4pt">Stress can exist without strain.</div> <div style="border:0px; margin:0px; padding:0in 5.4pt">Strain cannot exist without stress.</div> <div style="border:0px; margin:0px; padding:0in 5.4pt; text-align:center">7.</div> <div style="border:0px; margin:0px; padding:0in 5.4pt">The various types of stress are: tensile stress, compressive stress and shear stress.</div> <div style="border:0px; margin:0px; padding:0in 5.4pt">The various types of strain are: tensile strain, compressive strain, shear strain and volumetric strain.</div> \t<br>1.Stress is defined as a force that can cause a change in an object or a physical body while strain is the change in the form or shape of the object or physical body on which stress is applied.2.Stress can occur without strain, but strain cannot occur with the absence of stress.3.Stress can be measured and has a unit of measure while strain does not have any unit and, therefore, cannot be measured.4.Strain is an object’s response to stress while stress is the force that can cause strain in an object.5.Stress comes from the Latin word “strictus” which means “to draw tight” while “strain” comes from the Latin word “stringere” which means “to bind tightly.” | |
| 1288. |
What is meant by the term\'Radius of gyration\' |
| Answer» Radius of gyration or gyradius of a body about an axis of rotation is defined as the radial distance of a point from the axis of rotation at which, if whole mass of the body is assumed to be concentrated, its moment of inertia about the given axis would be the same as with its actual distribution of mass. | |
| 1289. |
What do you maen by pressure in a fluid. |
| Answer» Fluid pressure is a measurement of the force per unit area on a object in the fluid or on the surface of a closed container. This pressure can be caused by gravity, acceleration, or by forces outside a closed container. Since a fluid has no definite shape, its pressure applies in all directions. | |
| 1290. |
Discuss stress strain graph |
| Answer» The material, for which the stress-strain curve is to be plotted, is stretched by an applied force. The change in length (strain) of the material and the applied force are recorded. The applied force is gradually increased in steps and change in length is noted. The stress-strain graph is plotted between the stress (applied force per unit area) and the strain produced.In the graph region between O to A, the curve is linear. In this region, the material obeys Hook’s law. The material regains its original dimensions when the applied force is removed. In this region, the material behaves like an elastic body.In the region from A to B, stress and strain are not proportional. The point B in the curve is known as yield point (elastic limit). Corresponding stress is known as yield strength of the material.\xa0If the load is increased further, the strain increases rapidly even for a small change in stress. The portion B to D shows this. At a particular point C, the body does not regain its original dimension. In this case, even if we made the stress zero, the strain will not be zero. The material is said to have a permanent set. The deformation is known as plastic deformation. The point D is known as ultimate tensile strength of the material. Beyond this point, even a small applied force causes additional strain to be produced and at the point E, fracture occurs. If points D and E are close, the material is known as brittle. If they are apart, the material is known as ductile. | |
| 1291. |
Carnot heat engine derivation |
| Answer» | |
| 1292. |
When a body is in acceleration what is velocity |
| Answer» velocity is zero | |
| 1293. |
What are the difference between weak nuclear force and strong nuclear force ..? |
| Answer» The Strong Nuclear Force is an attractive force between protons and neutrons that keep the nucleus together and the Weak Nuclear Force is responsible for the radioactive decay of certain nuclei. It was realized that the strength of the two forces differed a lot. | |
| 1294. |
Atomizer |
| Answer» An atomizer is a device which converts a stream of liquid into a fine spray. ... When someone wants to use the atomizer, they can squeeze a bulb attached to the atomizer or depress the top of the nozzle to create a flow of air across the nozzle which pulls the liquid up the tube and through the nozzle. | |
| 1295. |
Important topics of Ray optics???????????! |
| Answer» | |
| 1296. |
How to improve english own wording for class 12 |
| Answer» By reading English newspaper and With the help of a grammar book containing words with synonyms and meanings . | |
| 1297. |
What is calorimeter principles |
| Answer» Heat lost =heat gained | |
| 1298. |
The radius of a wheel of bus is 0.70m.how many revolutions will it make in 22 km covering |
| Answer» 2(pi)rn=22002×22/7×0.70×n=2200n=5000 revolutions | |
| 1299. |
Action and reaction forces do not balance each other.why?? |
| Answer» Becoz one is positive and other is negative | |
| 1300. |
Derive mathematical formula to calculate force if mass remains constant. |
| Answer» Let m be the mass | |