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.
| 1151. |
Hcvarma book chapter 9 question |
| Answer» Which question | |
| 1152. |
What is elastic behaviour of solid?????? |
| Answer» ...............<br>Your welcome ?<br>Aman<br>Elastic behaviour of solid is a force acting on a body instead of producing a change in its state of rest or of uniform motion, produces a change in the shape of the body. Such a force is called deforming force.<br>A solid which can easily regain its original shape and size after applying some force on it.....This behaviour of solid is called elastic behaviour.. | |
| 1153. |
What is Hooke\'s law?????? |
| Answer» Hooke\'s law state that stress is directly proportional to strain<br>It states that within the limit of elasticity, the stress induced (σ ) in the solid due to some external force is always in proportion with the strain | |
| 1154. |
Why srain is unit less???? |
| Answer» Strain has less unit because it is a ratio of two similar quantities<br>Because numerator and denominator both have same units which cancel out.e.g. volumetric strain =dv/v=m^3/m^3 | |
| 1155. |
Do questions comes from physical world in main exam? |
| Answer» Thats the problem nah. I m an IIt aspirant i have joined a non attending cbse school. So i dont know whats going on thats why i asked you all.Bs passing marks le aana hai 11th me.??Chor hi deta hu iss chapter ko hardly 2 marks ka ques. aata hoga iss seh.<br>Did they teach this chapter in school? If they taught it will surely come<br>I think so this chapter is removed from syllabus. Questions will not be asked in main exams. But now it depends upon ur school | |
| 1156. |
Calculatr the temperature in k of a perfectly black body whicj radiates energy at the rate of w/cm |
| Answer» | |
| 1157. |
Derive an expression for the rise of capillary tube in term of force of surface tension |
| Answer» | |
| 1158. |
Can u revisit the important questions of this subject |
| Answer» U will get in this app important questions and practice solved and unsolved questions of ncert | |
| 1159. |
Explain the working of a refrigerator as a heat pump. |
| Answer» \tIt works on principle which is reverse of a heat engine.\tIn refrigerators we have 2 bodies lower temperature (cold) body which is freezer and higher temperature (hot) body which is surroundings.\tIt takes heat from the cold reservoir and then some work is done on the refrigerator and then the amount of heat is transferred to heat reservoir.\tLet Q2 be the takes from the cold reservoir, W is the work done on the system and then releases Q1 amount of heat to the hot reservoir.\tMathematically Q2+ W=Q1\xa0Heat Pump: In a heat pump heat is supplied into system when the surroundings are cold. | |
| 1160. |
Why CV is less than CP |
| Answer» Cp (specific heat at constant pressure)Cv (specific heat at constant volume)When a gas is heated at constant volume,no external work is done and so the heat supplied is consumed only in increasing the internal energy of a gas.But if the gas is heated at constant pressure , the gas expands against the external pressure so does some external work.In this case the supplied heat is used up in increasing the internal energy of the gas and in doing some external work .Since the internal energy is depends only on temperature,for the same rise of temperature the internal energy of a mass of a gas will increase by the same amount whether the pressure or volume remains constant.But since external work is additionally done for constant pressure than at constant volume to produce the same rise in temperature of the gas. Above is the reason for Cp is greater than Cv. | |
| 1161. |
Relation between angular veocity and linear velocity? |
| Answer» w=r×v | |
| 1162. |
why zeroth law is named so????? |
| Answer» It is called the "zeroth" law because it came to light after the first and second laws of thermodynamics had already been established and named, but was considered more fundamental and thus was given a lower number — zero.Hope this will help u yakshi<br>\xa0The zeroth law is so named because it logically precedes the first and second laws of thermodynamics.The zeroth law of thermodynamics is the basis for temperature measurement of a body or object. It defines the exchange of heat as well as defines the temperature. The law deals with the concepts used for designing the thermometer.<br>It is called the zeroth law because it came to light after the first and second laws of thermodynamics<br>It is called the "zeroth" law because it came to light after the first and second laws of thermodynamics had already been established and named, but was considered more fundamental and thus was given a lower number — zero. | |
| 1163. |
Define Pascal\'s law??? |
| Answer» Thank u<br>Pascal\'s law basically states that any pressure applied to a fluid inside a closed system will transmit that pressure equally in all directions throughout the fluid. This law is the basic principle that causes hydraulic power in heavy construction machines to work.A hydraulic lift for automobiles is an example of a force multiplied by hydraulic press, based on Pascal\'s principle. | |
| 1164. |
What is optical fibres? |
| Answer» An optical fiber is a thin fiber of glass or plastic that can carry light from one end to the other. The study of optical fibers is called fiber optics, which is part of applied science and engineering.Optical fibres have become very important in high-speed communications, such as cable TV and high-speed broadband services. Information, in the form of pulses of light, is sent down bundles of optical fibres. Fibre optic cables are able to carry more signals than traditional copper cable telephone lines.Hope this will help u saba ??<br>Optical fibers are made of glass. These are glass fibers. Now for fiber optic communication glass fibers are simply not enough they have to be specially built for total internal reflection (TIR). To achieve TIR the optical fiber is given an outer layer having a lower refractive index called cladding and the central part of the glass fibre is called core. | |
| 1165. |
What is the specific heat of a gas in an isothermal process |
| Answer» For isothermal process, ∆T=0 so specific heat must be infinity. | |
| 1166. |
Define capillarity derive an expression for the ascent of liquid in a capillary tube |
| Answer» | |
| 1167. |
Universal law of grevitesion derivation |
| Answer» | |
| 1168. |
The earth revolves round the sun with angular velocity 2*10,-7 |
| Answer» | |
| 1169. |
Why is gravitational potential energy negative? |
| Answer» | |
| 1170. |
The value of acceleration due to gravity increases as we go from equator to poles. Explain it. |
| Answer» | |
| 1171. |
Drive universal law of gravity |
| Answer» Gravity is the force of attraction exerted by earth towards its centre on a body lying on or near the surface of earth. Gravity is the special case of gravitation and is also called earth\'s gravitational pull. | |
| 1172. |
Capillarity expression |
| Answer» | |
| 1173. |
All constant are dimensionless .why. |
| Answer» It is not necessary that all constant should be dimensionless | |
| 1174. |
Wein\'s displacement law in simple language.. |
| Answer» Wien\'s displacement law states that the black body radiation curve for different temperature peaks at a wavelength that is inversely proportional to the temperature. | |
| 1175. |
Why does cloud float in the sky? |
| Answer» The water and ice particles in the clouds we see are simply too small to feel the effects of gravity. As a result, clouds appear to float on air. | |
| 1176. |
What is difference between dv and delta v？ |
| Answer» Nothing you can say either dv or delta v | |
| 1177. |
Why does the speed of a planet vary in it\'s orbit around the sun???? |
| Answer» Because the orbit is elliptical, the planet has to travel greater distance when it is near sun in comparison to when it is away from sun in the same time(second law)and hence its speed varies | |
| 1178. |
Explain the topic "work done by a variable force" in a simple language? |
| Answer» Hope u understand<br>It simple means that work which is done by a force is not constant...the force is varying with time... | |
| 1179. |
Establish relation between two specific heat of gas which is Greater and why |
| Answer» Specific heat at constant pressure is Greater then specific heat at constant volume because at constant pressure there is a small change in volume which leads to work done and hence the total required energy increases while at constant volume there is no such change in volume and hence it is less than the other . | |
| 1180. |
explain if the ice on the polar caps of the earth melts how will it affect the duration of the day |
| Answer» Days would get slightly longer . This is because the liquid water would distribute more evenly about the globe rather than all being near the poles, so the Earth\'s moment of inertia would increase. Since the Earth\'s angular momentum will not change, that means that its angular velocity (rate of turning) will decrease. | |
| 1181. |
is carnot engine is removed from our syllabus. |
| Answer» No<br>No<br>no<br>No it is not removed from cbse syllabus. But might be by ur school | |
| 1182. |
Which side book is best for us |
| Answer» Sl arora and hc Verma<br>Dinesh??<br>Sl arora is good and pradeep is also good for comoetitive level. Best one is ncert book. Solve all questions from textbook solved,unsolved,additional exercise<br>sl arora | |
| 1183. |
Ray optics has been added in this app but there is no video related to in this app?? |
| Answer» I\'ve searched but can\'t get any good channel<br>Search on YouTube<br>You will get videos<br>Search on YouTube | |
| 1184. |
Important derivation in chapter gravitational |
| Answer» Important derivation of gravitation Derivation of 1st 2nd and 3rd law of Kepler s planetary motiongravitational potential energyvariation of \'g\' with altitude and depthcalculation of \'g\'escape velocity of a sateliteorbital velocity of a sateliteHeight of geostationary satelite | |
| 1185. |
Why gravitational force is only attractive but not repulsive |
| Answer» If my logic is wrong than correct me<br>As we know that heavy mass attract other object which has less mass .....and earth has huge huge mass okk...so it always attract each and every object towards itself....That\'s why gravitational force are always attractive in nature...<br>Bhaiyaaa ji naam mein hi hai gravity means gravitational or attraction between two bodies | |
| 1186. |
Important numericals of thermodynamics |
| Answer» | |
| 1187. |
Why physics experiment video is are not in this app |
| Answer» You can search on YouTube | |
| 1188. |
What is Torreclli law. |
| Answer» Thanks<br>Kisi container mai hole karke jab paani nikalta hai tab uski velocity kisi body ke free fall karne jitni hoti hai i.e. √2gh . This is the application of Bernoulli\'s theorem | |
| 1189. |
Difference between Binding energy of satellite and Escape energy. |
| Answer» Thanks<br>Binding Energy of a satellite: The minimum amount of energy required for a satellite to escape from earth\'s gravitational influence is called as Binding Energy of a satellite.Binding Energy = GMm/2rWhere, G is Gravitational ConstantM is mass of earthm is mass of satelliter is radius of orbit i.e. Radius of earth + height at which staellite is orbiting the earth.Escape Energy: The minimum amount of energy with which a body should be projected from the surface of the earth, so that it escapes from the earth\'s gravitational field, is called the Escape Energy of the body.The velocity with which the body travels is known as Escape Velocity. It is given byV = √2gR)Where, g is acceleration due to gravityR is radius of Earth. | |
| 1190. |
Give proper chapter ray optics class 11 th |
| Answer» | |
| 1191. |
Explain pseudo force?? |
| Answer» Pseudo force (also called as fictitious force, inertial force or d’Alembert force) is an apparent force that acts on all masses whose motion is described using a non-inertial frame of reference frame, such as rotating reference frame. | |
| 1192. |
Important topics of kinetic theory of gases |
| Answer» Pressure equations.....specific heat capacity of mono di tri atomic gases......specific heat capacity of gases which is greater and why and derive a relationship between them(mayers equations / formula )... | |
| 1193. |
What is elasticiy |
| Answer» Elasticity<br>The property of a body which can regain its original shape and size after applying ext. Force on it.... | |
| 1194. |
Capillarity? |
| Answer» the tendency of a liquid in a capillary tube or absorbent material to rise or fall as a result of surface tension. | |
| 1195. |
Define law of conservation of energey for 11th standard?? |
| Answer» he law of conservation of energy states that energy can neither be created nor be destroyed. It may be transferred from one of its forms to the other. If you take all forms of energy into account, the total energy of an isolated system always remains constant.So in an isolated system such as the universe, if there is a loss of energy in some part of it, there must be a gain of an equal amount of energy in some other part of the universe. Although this principle cannot be proved, there is no known example of a violation of the law of conservation of energy. | |
| 1196. |
How to integrate dx/gx^1/2 with upper limit L and lower limit 0 |
| Answer» | |
| 1197. |
What is the relation between two angles for which horizontal ranges are equal |
| Answer» lte first amgle be x,then second angle will equal (90-x) | |
| 1198. |
Difference b/n sliding and rolling friction? |
| Answer» Rolling Friction : It is caused by rolling motion of an object, less energy is dissipated to overcome rolling friction as only one point of object is contacts the surface. Magnitude of rolling friction is less than sliding friction.<br>sliding friction causes from sliding of a bodyas example - ice skatingwhererolling friction causes from rolling of a bodyas example - rollar skates | |
| 1199. |
Definitiion of thermal equilibrium? |
| Answer» Two physical systems are in thermal equilibrium if there is no net flow of thermal energy between them when they are connected by a path permeable to heat. Thermal equilibrium obeys the zeroth law of thermodynamics<br>Thermal Equilibrium\tTwo systems are said to be in thermal equilibrium if the temperatures of the two systems are equal.\xa0\tIn mechanics if the net force on a system is zero, the system is in equilibrium. \tIn Thermodynamics equilibrium means all the macroscopic variables (pressure, temperature and volume) don’t change with time. They are constant throughout.For Example: -\tConsider two bodies at different temperatures one is at 300C and another at 600C then the heat will flow from body at higher temperature to the body at lower temperature.\tHeat will flow till both bodies acquire same temperature.\tThis state when there is no heat flow between two bodies when they acquire the same temperature is known as thermal equilibrium. | |
| 1200. |
Explain projectile motion. |
| Answer» Your welcome aaru<br>thankssss<br>Hope this will help u<br>Projectile motion is a form of motion experienced by an object or particle that is thrown near the Earth\'s surface and moves along a curved path under the action of gravity only. This curved path was shown by Galileo to be a parabolaA projectile is an object upon which the only force is gravity. Gravity acts to influence the vertical motion of the projectile, thus causing a vertical acceleration. The horizontal motion of the projectile is the result of the tendency of any object in motion to remain in motion at constant velocity. | |