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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.
| 3051. |
What is chain rule.... |
| Answer» The Chain Rule is a formula for computing the derivative of the composition of two or more functions. For instance, if\xa0<i>f\xa0</i>and\xa0<i>g\xa0</i>are functions, then the chain rule expresses the derivative of their composition.The Chain Rule Formula is as follows –\xa0dy/dx = dy/du . du/dx | |
| 3052. |
Guys 21 September se school reopen ho rahe jsi |
| Answer» May be opening!!<br>No *Sonam Tshring* it is not true..it is fake news..<br>Yes Annu you are right. | |
| 3053. |
What is ment by energy |
| Answer» Energy is a conserved quantity and the law of conservation of energy states that energy can neither be created nor destroyed but can only be converted from one form to another. The SI unit of energy is Joule. | |
| 3054. |
Why physics is tooo important. |
| Answer» Nature study | |
| 3055. |
"Sucess occurs , when your dreams get bigger than your excuses" ...explain this statement ... |
| Answer» Dn is doubtnut. Good morning you both | |
| 3056. |
Compare the strengths of fundamental forces |
| Answer» Strong nuclear force>electromagnetic force>weak nuclear force>gravitational force | |
| 3057. |
d/d, |
| Answer» | |
| 3058. |
Y= √ax+b |
| Answer» MLT | |
| 3059. |
Define vernier calipers |
| Answer» A calliper is a device used to measure the distance between two opposing sides of an object. It can be as simple as a compass with inward or outward-facing points. First the tips of the calliper are adjusted to fit across the points to be measured and the calliper is then removed and the distance between the tips is measured using a ruler.\xa0The modern Vernier calliper was invented by Joseph R. Brown in 1851. It was the first practical tool for exact measurements that could be sold at an affordable price to ordinary machinists. The Vernier Calliper consists of a main scale fitted with a jaw at one end. Another jaw, containing the vernier scale, moves over the main scale. When the two jaws are in contact, the zero of the main scale and the zero of the Vernier scale should coincide. If both the zeros do not coincide, there will be a positive or negative zero error.\xa0Parts of a Vernier Caliper1.Main ScaleThe main scale consists of a steel metallic strip graduated in centimeters at one edge and in inches at the other edge . It carries the inner and outer measuring jaws. When the two jaws are in contact, the zero of the main scale and the zero of the Vernier scale should coincide. If both the zeros do not coincide, there will be a positive or negative zero error. | |
| 3060. |
Derive an equation of motion by calculus method |
| Answer» | |
| 3061. |
Calculate a unit vector perpendicular to I+2j+k and parallel to 2i-3j-4k |
| Answer» | |
| 3062. |
I am very confuse in physics , how to physics fun |
| Answer» Take help from YouTube like physics wallah and unacademy type. ..... It is very helpful..<br>Firstly go to through the theory and formula ... And then solve the question related to each topic which you study.... Revise the formulas on daily basis and theory in every 3-4 days .. | |
| 3063. |
If i have unit and dimensions, kinematics, nlm and friction , shm ,and wave in test |
| Answer» Please give answer how to prepare for it | |
| 3064. |
Difference between gravitational force and electromagnetic force |
| Answer» Gravitational force:-It is the attraction between two objects.In this force only attractive forces occursElectromagnetic force:-It is the force between charged particles.In this force attraction as well as repulsion also occurs.<br>\tGravitational Force: It is the\xa0force of mutual attraction\xa0between any two objects by virtue of their masses. It is a\xa0universal force\xa0as every object experiences this force due to every other object in the universe.\tElectromagnetic Force: It is the\xa0force between charged particles. Charges at rest have electric attraction (between unlike charges) and repulsion (between like charges). Charges in motion produce magnetic force. Together they are called Electromagnetic Force. | |
| 3065. |
What is velocity and accerlation?? |
| Answer» \tComparison BasisVelocityAccelerationMeaningIt alludes to the speed of an object in the given direction.Acceleration implies to any change in the velocity of an object with respect to timeCalculated WithDisplacementVelocityWhat is its Nature?VectorVectorWhat is it?Rate of change of displacementRate of Change of VelocityFormulaDisplacement/Time (d/t)Velocity/Time (v/t)AscertainsHow fast an object is moving and in which directionHow fast an object’s velocity changes with time.Unit of Measurementmeter/second (m/s)meter/second2 (m/s2)\t | |
| 3066. |
Side book for physics.... |
| Answer» Nhi bro aapka bahut accha aaya h... Mera to sir 88.33℅ he aaya.... Maths me sirf 74 tha..... Aadu ka 90℅ h, diku ka 94.4 h, assem ka 97℅ h, shreya ka 90.2 ℅ h aur ankesh ka 85 ya 86 h sayad... | |
| 3067. |
Write down the significant figures? |
| Answer» Significant figures\xa0are the number of\xa0digits\xa0in a value, often a measurement, that contribute to the degree of accuracy of the value. We start counting\xa0significant figures\xa0at the first non-zero digit. Calculate the number of\xa0significant figures\xa0for an assortment of\xa0numbers.\xa0For\xa0example, 91 has two\xa0significant figures\xa0(9 and 1), while 123.45 has five\xa0significant figures\xa0(1, 2, 3, 4 and 5). Zeros appearing anywhere between two\xa0significant figures\xa0are\xa0significant: 101.1203 has seven\xa0significant figures: 1, 0, 1, 1, 2, 0 and 3. | |
| 3068. |
What is Reductionism and unification? |
| Answer» Unification : this approach consider all the world phenomena as a collection of universal law in different domain and condition Reduction : it is the effort to solve a complex problem by breaking it\'s into simpler parts<br>Reductionismare identical to, or are collections or combinations of, entities of another (often simpler or more basic) kind or that expressions denoting such entities are definable in terms of expressions denoting other entities. Thus, the ideas that physical bodies are collections of atoms or that a given mental state (e.g., one person’s belief that snow is white) is identical to a particular physical state (the firing of certain neurons in that person’s brain) are examples of reductionism.Unification: It is the act of\xa0unifying\xa0the different laws valid for different phenomena in to a single theory that explains all the different phenomena. Eg. ... These are unified under theory of electromagnetism; Reduction: It is the effort to solve a complex problem by breaking it into simpler parts. | |
| 3069. |
Dimensional formula of velocity |
| Answer» L¹T-¹<br>V=L1T-1<br>V=[L¹T-¹] | |
| 3070. |
Dimensional formula of potential differnce |
| Answer» M1L2T-3A-1<br>The potential difference is the work done per unit charge.The dimensional formula for potential difference is dimension of work/dimension of charge =dimensions of mass times acceleration times distance/ dimension for charge ={tex}M^1L^1T^-2L^1 / A^1T^1 = M^1 L^2 T^-3A^-1\xa0{/tex} | |
| 3071. |
Hindi midiam |
| Answer» Wht??? | |
| 3072. |
Differentiate cosx w.r.t. x |
| Answer» -sinx is the answer<br>- sin x | |
| 3073. |
Explain steps of scientific method |
| Answer» Scientific\xa0method\xa0involves making observations, forming questions, making hypotheses, doing an experiment, analyzing the data, and forming a conclusion. Every\xa0scientific\xa0experiment performed is an\xa0example of the scientific method\xa0in action, but it is also used by non-scientists\xa0in everyday situations.The scientific method consists of six steps:\tDefine purpose.\tConstruct\xa0hypothesis.\tTest the\xa0hypothesis\xa0and collect data.\tAnalyze data.\tDraw\xa0conclusion.\tCommunicate results. | |
| 3074. |
How can we find order of magnitude |
| Answer» | |
| 3075. |
Dimensional formula of area |
| Answer» M^0L^2T^0<br>M^0L^2T^0<br>Area =l*b breath is also a length so Dimensional formula is L*square<br>Means L*L<br>Lsquare | |
| 3076. |
Conversion of 5×10*-6 to microgram..... Fully step wise step |
| Answer» Here 5×10*-6 is in kg | |
| 3077. |
Mechanism me kon se chapter aate h? |
| Answer» Imp. Topics included in mechanics areKinematics, thermodynamics, work, energy, power, kinetic theory of gases, properties of solid and liquid, gravitation, rotational motion, laws of motion, oscillation and waves | |
| 3078. |
What kind of motions a rigid body can have? Briefly explain |
| Answer» . Translation motion . Rotational motion | |
| 3079. |
Tell me about integral calculus and the way to approach in problems... |
| Answer» | |
| 3080. |
0.421+1.32+0.02=? (Using significant figures) |
| Answer» 1.76<br>Sona mb use nahi oar rahi ho<br>Tq<br>Tnq<br>1.76 | |
| 3081. |
How can i check that how much syllabus got deducted for session 2020-2021 |
| Answer» You can see it in this app alsi<br>You search on cbse website CBSE.ACEDEMIC.NIC.IN REVISED SYLLABUS 2020-21<br>You can see it on an app called CBSE class 11 available on playstore | |
| 3082. |
Show that area under the v-t graph gives the displacement |
| Answer» | |
| 3083. |
What are systematic errors?? |
| Answer» English, Maths, Physics, Chemistry n Physical education.... aur apne?<br>Kon kon se subjects aapne liya h?? 11 me<br>aap koi social media nii na use krte? ?<br>Same to youu ?<br>Ha chalti h.. Pdhai feelhal chl nhi pa rhi h uska ek pair tut gya h ??... Belated happy friendship day.. Main bhi krr liye dinner ?.. | |
| 3084. |
What are random errors?? |
| Answer» han kar liya... Apne??<br>aur apki classes chalti h kya? aur padhai kesi chal rii? ?<br>? ...<br>Achhe hai sbb ?<br>Baki sb kaise h?? | |
| 3085. |
What is random errors?? |
| Answer» Hn???... Khud se ho gya? ?... Mene to ek bhi bar likha tha???<br>Dinner krr liya aapne??<br>Same question 2 baar ?...<br>???<br>Han.. Online classes chalti hai... School kab khulega... Ye nii pta ?\u200d♀️? | |
| 3086. |
What is instrumental error? |
| Answer» Aapki online class chl rhi h?? School kb khulenge kuch pta h??<br>Nhi aadu aapka bahut accha h.... 1-2 ℅ bahut hote h ye mujhe result wale din he pta chla... Kash aa gye hote... Pta h papa ke kitne daat sunne pdi mujhe...<br>Ganda hai... Pagal ho?? ? 1-2 ℅ hi to kum hai hum logo se... Kaun sa hum logo k bhot jyada aa gye hai... Except diku n aseem bro?<br>Ab mera mazak mat udaoo.... Itna ganda marks aaya h.. Uspe pe congrats ?<br>Okay... Bol dungi... and congooo u too? | |
| 3087. |
Example 2.2 of chapter 2class 11 |
| Answer» | |
| 3088. |
If energy [E],velocity [v],Time [T] are the fundamental quantities. Then what is the surface tension |
| Answer» Force/Area=M^1L^2T^-2/L2M^1L^0T^-2 | |
| 3089. |
Restoring force constant dimensions |
| Answer» | |
| 3090. |
How many units have work and energy |
| Answer» Work-1, Energy-1<br>The SI unit of work is the joule (J).\xa0ewton meter in termed and Joules and it is the unit of Work.The SI unit of energy is joules (J), which is named in honour of James Prescott Joule. | |
| 3091. |
Parallelogram law of vectors addition |
| Answer» Parallelogram Law of Vector Addition:This law is also very similar to the triangle law of vector addition. Consider the two vectors again.Now for using the parallelogram law, we represent both the vectors as adjacent sides of a parallelogram and then the diagonal emanating from the common point represents the sum or the resultant of the two vectors and the direction of the diagonal gives the direction of the resultant vector.<center></center>The resultant vector is shown by\xa0C.\xa0This is known as the parallelogram law of vector addition.By using the\xa0orthogonal system\xa0of vector representation the sum of two vectorsa =\xa0a1i^+a2j^+a3k^\xa0and b =\xa0b1i^+b2j^+b3k^\xa0is given by adding the components of the three axes separately.i.e. a + b =\xa0aii^+a2j^+a3k^+b1i^+b2j^+b3k^⇒a+b\xa0=\xa0(a1+b1)i^+(a2+b2)j^+(a3+b3)k^ | |
| 3092. |
Basic unit and their value |
| Answer» | |
| 3093. |
Which physical quantity has same dimensional formula |
| Answer» Quantities Having the Same Dimensional Formula\tImpulse and momentum.\tWork, energy, torque, the moment of force, energy.\tAngular momentum, Planck’s constant, rotational impulse.\tStress, pressure, modulus of elasticity, energy density.\tForce constant, surface tension, surface energy.\tAngular velocity, frequency, velocity gradient.\tGravitational potential, latent heat.\tThermal capacity, entropy, universal gas constant and Boltzmann’s constant.\tForce, thrust.\tPower, luminous flux. | |
| 3094. |
Write the difference between absolute and relative error |
| Answer» Numerical analysis is concerned with the methods of finding the approximate values and the absolute errors in these calculations. The absolute error gives how large the error is, while the relative error gives how large the error is relative to the correct value. In numerical calculation, error may occur due to the following reasons.\tRound off error\tTruncation error | |
| 3095. |
Mathematical tools questions |
| Answer» | |
| 3096. |
Draw velocity. Time graph for uniformly accelerated motion |
| Answer» The\xa0velocity-time graph\xa0of a\xa0uniformly accelerated motion\xa0is a straight line\xa0graph\xa0inclining towards the\xa0time\xa0axis. If the object has positive constant\xa0acceleration, the\xa0graph\xa0slopes upward. In case the object has negative constant\xa0acceleration, the\xa0velocity-time graph\xa0will slope downward.\xa0The pattern of slope of the\xa0graph\xa0shows that object is moving with\xa0uniform\xa0acceleration. Calculation of Displacement and Distance covered by the moving object using\xa0velocity time graph: Let take two points, A and B at the slope of the\xa0graph.\xa0Draw\xa0a line from B to BD and another from point A to AE parallel to y-axis. | |
| 3097. |
What is kinetic energy and dedeuce its expression |
| Answer» The\xa0kinetic energy\xa0of an object is the\xa0energy\xa0that it possesses due to its motion. It is\xa0defined\xa0as the work needed to accelerate a body of a given mass from rest to its stated velocity.\xa0Consider a body of mass "m" starts moving from rest. After a time interval "t" its velocity becomes V.If initial velocity of the body is Vi = 0 ,final velocity Vf = V and the displacement of body is "d". ThenDerivation for the equation of\xa0Kinetic Energy:The relation connecting the initial velocity (u) and final velocity (v) of an object moving with a uniform acceleration a, and the displacement, S is\xa0 v2\xa0- u2\xa0= 2aSThis gives S =\xa0½a(v2\xa0-\xa0u2)\xa0We know F = ma. Thus using above equations, we can write the workdone by the force, F as W = ma\xa0×\xa0½a(v2\xa0-\xa0u2)\xa0 or W =m(\xa0v\xa02\xa0-\xa0u\xa02\xa0)\xa0½If object is starting from its stationary position, that is, u = 0, then W =\xa0½mv2It is clear that the work done is equal to the change in the kinetic energy of an object.If u = 0, the work done will be W =\xa0½mv2Thus, the kinetic energy possessed by an object of mass, m and moving with a uniform velocity, v is Ek= ½mv2\xa0 | |
| 3098. |
What is coefficient of viscosity? |
| Answer» The\xa0coefficient of viscosity\xa0is a measure of resistance to flow of the fluid. ... Dynamic\xa0viscosity\xa0μ is used in Darcy\'s law to calculate the rate of fluid flow in porous media. The relationship between\xa0viscosity\xa0and flow rate defines the rheology of the fluid.\xa0The SI unit of viscosity coefficient (η) is Nm-2s or Nsm-2. It is the ratio of the actual\xa0velocity\xa0to the theoretical\xa0velocity\xa0of a fluid jet. | |
| 3099. |
Define projectile motion and show that the projectile motion is parabolic with height h |
| Answer» Thanks<br>A projectile is the name given to any body which once thrown into space with some initial velocity moves thereafter under the influence of gravity alone without being propelled by any engine or fuel. The path followed by a projectile is called its trajectory.Example- An object dropped from an aeroplane. | |
| 3100. |
What is adabatic process |
| Answer» Adiabatic Processes\tAdiabatic is a process in which there is no heat flow takes place between the system and the surroundings.\tThese processes are sudden.\tThe walls of the container should be adiabatic\tFor an adiabatic process of an ideal gas<br>An adiabatic occurs without transferring heat and mass between a thermodynamic system and it\'s surroundings | |