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.
| 1. |
What is uniform velocity |
| Answer» it is the velocity which is change into equal distance in equal interval of time .<br>It is that velocuty of object with which ,it undergoes equal displacement in equal intervals of time.<br>Change in displacement with respect to time<br>Change in speed with respect to change in time | |
| 2. |
Derive the speed time equation by calculas method |
| Answer» We know\t\u200b\u200b\u200b\u200b\u200b{tex}a = \\frac { d v } { d t }{/tex}\ta dt = dv\tIntegrating\t{tex}\\int\\limits_0^tadt =\\int\\limits_u^v dv{/tex}\tat = v - u\tv = u+at\tWe know\t{tex}a = \\frac { d v } { d t }{/tex}\tMultiply and Divide by dx\u200b\u200b\u200b\u200b\u200b\u200b\u200b\t{tex}a = \\frac { d v } { d t } \\times \\frac { d x } { d x }{/tex}\t{tex}a = \\frac { d v } { d x } \\times v{/tex}\t{tex}adx = vdv{/tex}\xa0{tex}\\left( \\because \\frac { d x } { d t } = v \\right){/tex}\tIntegrating within the limits\t{tex}a \\int \\limits _{0}^{s}dx= \\int \\limits _{u}^{v}vdv{/tex}\t{tex}as = \\frac { \\upsilon ^ { 2 } } { 2 } - \\frac { \\nu ^ { 2 } } { 2 }{/tex}\t{tex}a s = \\frac { \\upsilon ^ { 2 } - \\nu ^ { 2 } } { 2 }{/tex} \u200b\u200b\u200b\u200b\u200b\u200b\u200b{tex}\\upsilon ^ { 2 } - \\nu ^ { 2 } = 2 a s{/tex} | |
| 3. |
9×2y - 24x^2 +16y^3.factorise? |
| Answer» Hello g . Are u fine ? | |
| 4. |
Give me tips for preparation of physics?? |
| Answer» What should be the particular things in theory from 1-5 chapter<br>First of all you have to prepare your theory portion clearly then move to derivations and then solved examples after that numericals | |
| 5. |
Advantage of friction |
| Answer» 1. It is becomes difficult to walk on a slippery road due to low friction. When we move on ice, it becomes difficult to walk due to low friction of ice.2. We can not fix nail in the wood or wall if there is no friction. It is friction which holds the nail.3. A horse can not pull a cart unless friction furnishes him a secure Foothold.4. We can write on a paper or on a board.5. Friction helps in applying the brakes.6. It helps in walking on floor.7. Coffee mug stays on the dashboard8. Shuffling across a carpet to shock someone9. Draging of atmosphire with earth is possible10. Helps to pevents the life on earth by burning astroids.<br>helps us walk<br>Advantage of friction | |
| 6. |
Derivation of equation of Newton\'s Second Law of Motion that is F=ma |
| Answer» Soory aditi ki mai ni aa paya hosital (dil se)??????????????????<br>F is directly proportional to dp/dtF=kdp/dtHere k=1F=dp/dtF=mdv/dt (m is constant) F=ma (a=dv/dt) | |
| 7. |
Equation of projectile? |
| Answer» Y=X^2. Is the eq of parabola.or projectile . | |
| 8. |
Unit of Permeability |
| Answer» H/m,Wb/A.m | |
| 9. |
Difference between vectr and scalar |
| Answer» I\'m girl and u<br>Scalar - its only magnitude.and vector- its a magnitude and direction<br>1-vector quantity have direction where scaler quantity have not direction<br>Tell me please r u girl or boy PLEASEÈEEEEEEEEEEEEEEEE<br>Scalar quantity have magnitude only e.g. mass ,speed whereas vector quantity have both magnitude snd direction e.g. velocity etc. OK BABES ☺☺????????????? | |
| 10. |
what is centripetal force ? |
| Answer» aditi give me ur no. I cant understand it<br>A force that acts on a body moving in a circular path and is directed towards the centre around which the body is moving.Thanks<br>Centripetal force is the force acting on a body moving in circular motion along its radius towards the centre which keeps that body moving in that particular motion...<br>Any force that acts or directed towards center when a particle moves in circular motion , is called centripital force. Ex- If a body of mass M moves in a circular path having radius R with a uniform speed V. Then in this case its centripetal accln will be V^2/R and centripetal force will be MV^2/R....<br>A force that acts on a body in a moving a circular path and is directed towards the centre around which the body is moving . T - m(v)2/r means m multiplied by v square and devided by r i.e. radius of circular path . | |
| 11. |
Name the weakest force in nature |
| Answer» It is gravitational force or force of gravity<br>Gravitational force<br>It\'s gravitational force.<br>Gravitational force<br>Force of repulsion | |
| 12. |
Is flying of bird an example of parallelogram law of vector addition ? How |
| Answer» Yes as sum of vectors ;results in uplifting of Bird otherwise bird cannot fly only with help of wings | |
| 13. |
A coin is dropped from hill of height 80 . Calculate speed of coin after 2 second of drop |
| Answer» 20 m/sec | |
| 14. |
Who to learn physics |
| Answer» Nothing else only crystal clear concept<br>First you are suppost to listen the class instead of eating chocolates and making funSecond you are to read the concepts in the night study on what the teacher taught on that dayThird you should revisenit again within the weak Fourth again the revision must be made monthly once These are the ways to learn physics and to never forget the concepts rajaa | |
| 15. |
Define SI unit of solid angle. |
| Answer» Steradian<br>Its steradian<br>Steradian<br>Steradian<br>Steradian is the si unit of solid angle<br>SI unit of solid angle:A\xa0steradian is the SI unit of solid angle.It can be defined as the solid angle substended at a center of an unit,sphere by a unit area on its surface.For a general sphere of radius r, any portion on its surface with area A= r2\xa0 | |
| 16. |
Prove law of motion in graphical and mathematical method |
| Answer» | |
| 17. |
Hello friends what is inertia with examples |
| Answer» Any one online<br>Most welcome gurwinder<br>I am fine<br>Thanks jagtar mistri, jassi midha<br>My answer is same as JASSI MIDHA Who gives u answer and Hi How r u babes?<br>it is the inability of a body to change its position to itself is called inertia:inertia is 3 types:- 1.inertia of rest 2. inertia of motion 3. inertia of a direction | |
| 18. |
Essential characterstics of equilibrium is |
| Answer» acceleration equals zero<br>Yaaaaaaa | |
| 19. |
What is unification and reductism |
| Answer» Unification: It is the act of unifying the different laws valid for different phenomena in to a single theory that explains all the different phenomena.Eg. Electricity, magnetism and light are different phenomena and have different laws of physics for each of them. These are unified under theory of electromagnetism;Reduction: It is the effort to solve a complex problem by breaking it into simpler parts.Eg. Temperature of a system is reduced to average kinetic. | |
| 20. |
Why force is a vector quantity |
| Answer» Force is considered a vector quantity because force always has a magnitude and direction. | |
| 21. |
Elastic collision in one dimension derivation |
| Answer» \tElastic Collision:\xa0In the elastic collision total momentum, the total energy and the total kinetic energy are conserved. However, the total mechanical energy is not converted into any other energy form as the forces involved in the short interaction are conserved in nature. Consider from the above graph two masses,\xa0m1\xa0and m2\xa0moving with speed u1\xa0and u2.\xa0The speed after the collision of these masses is\xa0v1\xa0and v2\xa0.\xa0The law of conservation of momentum will give: m1u1\xa0+ m2u2\xa0=\xa0m1v1\xa0+ m2v2\xa0 The conservation of Kinetic Energy says:1/2 m1u21\xa0+ 1/2 m2u22\xa0= 1/2 m1v21\xa0+1/2 m2v22\xa0 | |
| 22. |
What is blak body |
| Answer» A black body is an idealized physical body that absorbs all incident electromagnetic radiation, regardless of frequency or angle of incidence.<br>Ideal body ,when increase heat frequency increase in body.e.g. fe rod heated rod change in colour red to yellow to blue<br>No wrong alll<br>A body which absorbs or emits the radiations of suitable frequency | |
| 23. |
Why static friction is a self adjusting fric |
| Answer» Static friction is the force of friction which comes into play between the surfaces of contact of two bodies when there is no relative motion between the bodies inspite of applying an external force on them. Force of static friction is self-adjusting. Its value may vary from zero to limiting friction depending on the value of applied force. | |
| 24. |
Ask the questions from experts you all have time between 8:25pm to 8:45 pm daily.Team cbse |
| Answer» | |
| 25. |
Now the experts are online you can ask any questionTeam cbse |
| Answer» Oh cbse expert Hello . CAN U TELL SOMETHING ABOUT HYBRIDISATION IN DETAIL because i don\'t understand this topic in my school.<br>Please suggest me that how to study the graphs of motion in a straight line | |
| 26. |
What is the relation between potential and kinetic energy |
| Answer» Relationship between kinetic and potential energy : When any mass is lifted, the gravitational force of the earth acts to bring it back down. The energy needed to lift up the mass is stored as potential energy due to its position. As the mass is dropped, stored potential energy is converted to kinetic energy.mg(h - x) + 1/2 mv^2= mgh | |
| 27. |
Hi any here |
| Answer» Whats yr quest<br>Yaa<br>Hlo<br>Yuppp<br>What????? | |
| 28. |
A bird while flying takes left turn where does it get the centripetal force from |
| Answer» When a bird takes left or right turn it does not remain horizontal but tilts like a plane. Thus pressing the air with greater area of the underside. As per Newton\'s Third Law of Motion the air underneath also exerts equal and opposite force on the bird, like normal force on a banked circular road. The horizontal component of this force is the required centripetal force for the bird.Read more on Sarthaks.com - https://www.sarthaks.com/300103/bird-while-flying-takes-left-turn-where-does-it-get-the-the-required-centripetal-force-from | |
| 29. |
Explain young modules,bulk modules of solid... |
| Answer» Sorry...i will never disturb you no more im going from this app forever....bye take care<br>Hello Good morning | |
| 30. |
Uniform motion in a straight line,ka samikard |
| Answer» | |
| 31. |
What is the score of physics |
| Answer» Use ncert book | |
| 32. |
Figures of position of centre of mass of some homogenous bodies of regular shape |
| Answer» | |
| 33. |
What fraction is the atomic volume is occupied |
| Answer» 2/3 | |
| 34. |
Give some examples of Newton\'s 2nd Law of Motion |
| Answer» Good Night Sweet Dreams take care<br>Examples of Newton\'s II\xa0nd \xa0Law of Motion are :-\tIf you use the same force to push a truck and push a car, the car will have more acceleration than the truck, because the car has less mass.\tIt is easier to push an empty shopping cart than a full one, because the full shopping cart has more mass than the empty one. | |
| 35. |
What is the momentum of a body of mass 200g moving with a velocity of 15m/sec? |
| Answer» Momentum= mvO.2kg×15m/s=3kgm/s | |
| 36. |
Explain projectile motion in breif with derivation |
| Answer» | |
| 37. |
Prove that Vab= Va-Vb, where symbols have their usual meaning |
| Answer» I need answer man?<br>hii Kunal | |
| 38. |
Limtation of dimension and what is relative error |
| Answer» 1.this method gives us no. information about the dimensionless constants in the formula. Ex 1,2,π,etc 2.if a quantity depends on more than three factors, having dimensions.,the formula can\'t be derived 3.we can\'t derive the formula containing trignometrical functions, exponential functions, log functions etc which have no dimensions 4.it gives no information whether a physical quantity is scaler or vector<br>Another example plzzzz...<br>Limitation of dimensions :It not tell about dimension of constant value, trigonometry function, and dimensions of 2 value eg. S=ut+1/2at2 | |
| 39. |
Is all in one arihant is best book for study?? |
| Answer» According to Ur study<br>But I not have your number to sendd<br>Hm thank u<br>Ya can u send me first page of this book<br>Without any doubt it is perfect just buy it nd read it | |
| 40. |
What is the difference between External & Internal Forces???? |
| Answer» Hiiiiiiiiiiiiiiìiii<br>Both have a major difference in external force the body takes by an outer diplacement but on other hand in internal forces that should inspire the body to move goer an example force exerted by emgine to move a car | |
| 41. |
Is physica \'s sl arora good for study?? |
| Answer» Yes it is good<br>Yes it is very good<br>Yes it is the best for studying physics<br>Phele ek book ktm karo ncert uss ke baad<br>Hmm<br>Ya both of above are absolutely correct<br>Best for 11 also for competition<br>Yes | |
| 42. |
What are the 4 laws of conservation |
| Answer» gyes I am not asking law of chemical combination<br>1.law of conservation of mass 2.law of definite proportion 3.law of multiple proportion 4.gay lussac\'s law of gaseous state<br>1. Law of conservation of mass2. Law of definate proportion3. Law of multiple proportion4. Gay lusac law | |
| 43. |
Muscle times velocity represents power.Find the dimension of power |
| Answer» ML^2T^-3<br>M1L^2T^-3. | |
| 44. |
Define work and types of work with example |
| Answer» \tWhen the direction of applied force is in the direction of displacement then work done is said to be positive. e.g.\xa0When a body falls under the action of gravity, {tex}\\theta = 0 ^ { \\circ }{/tex}\xa0\tWhen the direction of applied force is opposite to\xa0the direction of displacement then work done is said to be negative. e.g. When brakes are applied on a moving vehicle work done by a braking force is negative.\tWhen the direction of applied force is perpendicular to\xa0the direction of displacement then work done is zero. e.g. A coolie carrying a load on his head moves on a horizontal platform, {tex}\\theta = 90 ^ { \\circ }{/tex} work done is zero. | |
| 45. |
1) (LMT) is the dimensional formula for? A) velocity. C) Acceleration B) Force. D) Work |
| Answer» No one<br>None of them | |
| 46. |
Triangle law of vector addition |
| Answer» When vector are both in magnitude and direction by a triangle of the two sides are taken in same order then the resultant vector are represented both in magnitude and direction by the triangle of the third side are taken in opposite order............hope it will help u ??? | |
| 47. |
Steps for study physics good? |
| Answer» Thanks..but i can\'t understand only reading ncert because it literaly hardvand it has very complex words....so which book i refer to read<br>Hope this is helful<br>1 Read ncert at least 2 times by yourself. 2 Be focused in school or ccg.3 Practice numericals first frm ncert n then frm exemplar | |
| 48. |
0.00001m= _____pm?? |
| Answer» It\'s 10^7 pm<br>great Karan Singh<br>1picometer is 10^-12 meter therfore 0.00001 meter is equal to 10^-17 meter | |
| 49. |
Happy Raksha Bandhan to all my friends |
| Answer» Happy raksha bandhan ? | |
| 50. |
Why claculus is actually used? |
| Answer» For this you have to go through Newton hypothesis who proposed idea of calculus | |