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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.
| 10251. |
Name the process in which linear momentum change but kinetic energy do not change |
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Answer» Uniform circular motion In uniform circular motion linear momentum changes but kinetic energy does not.This is because in circular motion, linear velocity keeps on changing at each and every point as it is a vector quantity.Momentum or linear momentum is velocity dependent and thus it changes as velocity changes because it is a vector quantity as well.But since kinetic energy is not a vector quantity it doesn\'t change in circular motion.\xa0 Uniform circular motion |
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| 10252. |
Step to find significant figure |
| Answer» These r the valuable numbers... Ok | |
| 10253. |
Derivations of 3 formulas by calculus method |
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Answer» Abhi calculas ni padhna hai bhai....... Google par search kro mil jaega |
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| 10254. |
Find the differencation of sin X by abinoto method |
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| 10255. |
All about parralax method?? |
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| 10256. |
3.0m/s2 =_______ km/hr2 |
| Answer» 3×18÷5=54/5 km/hr. | |
| 10257. |
If inital position 5cm . After 3sec it reaches 20m . What will be the velocity |
| Answer» Velocity=change in position/timeVelocity=20-0.5/3 =19.5/3 =6.5 m/sec | |
| 10258. |
How can the space technology and nuclear energy improve the quality of life? |
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| 10259. |
What is impulse and monmentum? |
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Answer» The product of mass and velocity is called momentum Momentum…is a quantity that describes an object\'s resistance to stopping (a kind of "moving inertia").is represented by the symbol p (boldface).is the product of an object\'s mass and velocity.p = mvis a vector quantity (since velocity is a vector and mass is a scalar).Impulse…is a quantity that describes the effect of a net force acting on an object (a kind of "moving force").is represented by the symbol J (boldface).is the product of the average net force acting on an object and its duration.J = F̅Δtis the force-time integral.J = F dt is a vector quantity (since force is a vector and time is a scalar). |
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| 10260. |
Give the geometrical meaning of dot product |
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| 10261. |
Explain pulling law long roller is easier than pushing it by vector analysis |
| Answer» While we push a lawn roller one component of the applied force acts in the direction of weight and makes it heavier thus pushing becomes difficult on the other hand when we pull it one component of applied force decreases the net weight and pulling becomes easier | |
| 10262. |
In increasing order physical fundamental forces |
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| 10263. |
Happy friendship day to all |
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Answer» Thnx ***** wish u the same Last wish you all Happy Friendship Day you all???? Same to u yaar ???????????????????????????? |
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| 10264. |
Mere questions solve karne ke liye thank all |
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Answer» Tum kya mere class wala prashant h??? Hlo snjna |
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| 10265. |
Differnciation |
| Answer» What ......... | |
| 10266. |
If y=1/x then find dy/dx |
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Answer» But how -x/x^2 -x^-2 |
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| 10267. |
Deprivation of projectile motion |
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| 10268. |
Which site book would you prefer for class 11 |
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| 10269. |
What is the difference between plane n solid angle |
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Answer» Plane angle is called radian and solid angle is called stredian. Plane angle : It usually refers to an angle in 2 dimensional figure like square, triangle, circle etc .Solid angle: It refers to an angle in 3 dimensional figure like cube,cuboid,sphere etc. |
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| 10270. |
Formula for percent tage error |
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Answer» Mean error divided by mean constant × 100 100×error both side. Relative error*100 |
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| 10271. |
What is physics.?. |
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Answer» Thanks ?? Study of nature is called physics Physics is the main discipline part of science that deals withthe study of laws of nature and their application to natural phenomenon. |
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| 10272. |
What is calorimetry |
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| 10273. |
Can u tell me how can i get full marks in physics ??? |
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Answer» Study with concentration and for approx 1 hr per day ...............… ? Simple study everyday atleast 3 hr? And also give me thnx. Tell me also Mujhe nhi pta but agar kisi ko pta h to mujhe bhu btana |
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| 10274. |
Formula of centripetal acceleration |
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Answer» Ac =v^2/r Ac=v²/r Fc=mv²/R Acceleration acting on the object undergoing uniform circular motion is called centripetal acceleration.\xa0 |
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| 10275. |
what is tan inverse (1/3) in degree |
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| 10276. |
What do you mean by gravitational force? |
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Answer» Gravitional force is a type of force which always toward downward it is a type of push toward downward with actract things always toward downward The force applied by earth on an object in downwards direction is called gravitational force. Example - falling of an apple It is a force which acts between two objects on basis of their mass |
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| 10277. |
Is it easier to push or pull a lawn mover.prove it mathematically |
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Answer» But can anyone give me the answer with mathematical solution Push |
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| 10278. |
How can we derive the formula of H= I square R *t using dimensional analysis |
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| 10279. |
rounding of 18.35 up to 3 digits |
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Answer» 18.3 18.4 joga odd hota hai to change ho jata hai 18.3 18.4 18.3 |
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| 10280. |
Define parallax method and derive its formula |
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| 10281. |
What does the area of acceleration - time graph |
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| 10282. |
Tabulate the positive and negative powers of 10 |
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| 10283. |
What is the dimension of angular speed |
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Answer» M^0L^0T^-1 Angular Velocity = angle( theta)/time (t) 1/T=T^-1DIMENSIONS:[M0L0T^-1]SI UNIT:rad s^-1@diti? Angular velocityv=rwwhere w is angular velocityv is linear velocityr is radiushence w=v/rdimension of v isLT^-1R=Lhence the dimension of w=LT^-1/Lw=T^-1 |
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| 10284. |
Which type of quantity Avogadro number |
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Answer» Dimensionless Constant@diti? Avogadro\'s number is a Dimentionaless constant measured in mole-1.Dimensionless constant are pure numbers and mathematical constants.Dimentional variable have dimentions and variable value.For Example - Velocity,Force\xa0Three Example of Dimentionless variables are :▪ Specific Gravity.▪ Angle.▪ Strain. |
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| 10285. |
Dv / dx = ? If v = 2v + pie v ^3 |
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Answer» Ya i hbe solved it the question was wrong Not possible.V should be the function of x if it has to be differentiated in terms of v & x. |
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| 10286. |
Limitations of dimensional formula |
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Answer» 1. It doesn\'t give info about dimensions of constants.2. It just tell whether equation is dimensionally correct or not but doesn\'t tell about full correctness of any formula. Limitations of dimensional method. ... Numerical constants having no dimensions cannot be obtained by method of dimensions. Equations using trigonometric, exponential, and logarithmic functions can not be deduced. If dimensions are given, physical quantity may not be unique as many physical quantities have same dimensions.Thanks @diti? 1. This method gives us no. information shout the dimensionless constants in the formula. Ex. 1,2,π2. If a quantity depends on more than three factors, having dimensions.,the formula cannot be derived.3. We can not derive the formula containing trignometical function, log functions etc. which have no dimensions.4. It gives no information whether a physical quantity is scaler or vector |
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| 10287. |
Any important questions is there in physics |
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Answer» What are the important questions in first chapter Chapter wise u have to go through them |
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| 10288. |
Intigration of 5x^2+7x+3/(x+1).dx |
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| 10289. |
Show that range of a projectile is same for projection at complimentary angle. |
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| 10290. |
If kinetic energy of a body increases by 300% by what will be linear momentum of the body increase |
| Answer» Consider a particle\xa0having\xa0mass m moving with a velocity v so, that its kinetic energy, K.E\xa0=\xa0{tex}\\frac{1}{2}{/tex}mv2 and momentum, p = mv.Thus,\xa0{tex}\\mathrm{K.E}=\\frac{p^{2}}{2 m} \\text { or } p=\\sqrt{2 m K .E}{/tex}when, kinetic energy\xa0is increased by 300%, then new kinetic energy is given by:K.E\' = K.E + 300% of E =KE + 3KE = 4K.ENew momentum p\' =\xa0{tex}\\sqrt{2 m \\mathrm{K.E}^{\\prime}}=\\sqrt{2 m \\times 4 \\mathrm{K.E}}{/tex}{tex}=2 \\sqrt{2 m \\mathrm{K.E}}=2 p{/tex} Therefore,\xa0the Percentage increase in momentum\xa0{tex}=\\frac{p^{\\prime}-p}{p} \\times 100=\\frac{2 p-p}{p} \\times 100=100 \\%{/tex} | |
| 10291. |
What is the value of m in ( i+mj+k)cap to be unit vector? |
| Answer» For unit vector, we have{tex}| \\hat { \\mathbf { i } } + m \\hat { \\mathbf { j } } + \\hat { \\mathbf { k } } | = \\sqrt { 1 + m ^ { 2 } + 1 } = 1{/tex}m2\xa0+ 2 = 1{tex}m ^ { 2 } = - 1 \\Rightarrow m = \\sqrt { - 1 }{/tex}Hence, m is imaginary number. | |
| 10292. |
What is projectile motion and its example.? |
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Answer» Few Examples of Two – Dimensional Motion [Projectile Motion] ●Throwing a ball or a cannonball ●The motion of a billiard ball on the billiard table. ●A motion of a shell fired from a gun.● motion of a boat in a river.●The motion of the earth around the sun.Hope it helped u a lot Brother Thanks! @diti? When a particle is thrown obliquely near the earth’s surface, it moves along a curved path under constant acceleration that is directed towards the center of the earth (we assume that the particle remains close to the surface of the earth). The path of such particle is called a projectile and the motion is called as\xa0projectile motion. Air resistance to the motion of the body is to be assumed absent in projectile motion.An object that becomes airborne after it is thrown or projected is called\xa0projectile. Example, football, javelin throw, etc. Projectile motion is a form of motion experienced by an object or particle (a projectile) that is thrown near the Earth\'s surface and moves along a curved path under the action of gravity only (in particular, the effects of air resistance are assumed to be negligible). Ok Brother Fast |
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| 10293. |
Is force can be made or destroyed |
| Answer» Yes it can be | |
| 10294. |
Example 2.1 chapter 2 |
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| 10295. |
Define unification and reducation |
| Answer» Unification: It is a trial to correlate and unite various universal laws and basic phenomena of nature to explain an activity. For example—Maxwell unified electric, magnetic and optical phenomenon on when he explained that light is an electromagnetic wave.Reduction: It is the effort to solve a complex problem by breaking it into simpler parts. It is considered to be heart of physics. For example temperature of a system is reduced to average kinetic. | |
| 10296. |
Cbse halfyearly syllabus ? |
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| 10297. |
Define co.efficient of friction |
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Answer» Or mathematically it is equal to tanα Coefficient of friction is the ratio of force to reaction The co efficient of the friction is a value that show the relationship between the force of friction of two objects and the normal reaction between the objects are involved . OK Saran babes |
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| 10298. |
Question no 38 from hc verma book of chapter newton\'s law of motion |
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| 10299. |
1m = _______ pm |
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Answer» 10/-12 Ya aditi is absouletely correct 1m=10^12pm@diti? 10^12pm |
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| 10300. |
what do you mean by projectile motion?????? |
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Answer» thx Aayush thx tannu In projectile motion, the horizontal motion and the vertical motion are dependent on each other that is, neither motion affects the other. Projectile motion is a motion of a particle which covered the curved path near the surface of earth is called projectile motion .Profectile motion covered the parabola path . |
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