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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.
| 10451. |
Hi i am new on this app . What is Bernoulli\'s Theorm in explain. |
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Answer» Thanksssss According to a the Bernoulli principle:the sum of kinetic energy, pressure energy and potential energy per unit mass is constant if fluid is ideal and flow is streamlined. |
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| 10452. |
Why dofferent planets have different orbital velocity |
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Answer» It is because , when you see the formula of orbital velocity you find M there which is the mass of planet and we know that the different planets have different masses so thrre must be a change in orbital velocity........ For 2 planets of same mass in universe it also depend upon the environment of that planet Thats all belive me it is sufficient Can you answer my question Because of their place . They are all placed in different spaces with different velocity to each other. Okkkk |
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| 10453. |
What is stock law |
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Answer» STOKE\'S LAW1. Body is smooth , small and moves slowly.2. Medium is Homogeneous and infinite.3. No slip btwn the body andfluid. F = 6πnrv Stokes Law\tThe force that retards a sphere moving through a viscous fluid is directly ∝to the velocity and the radius of the sphere, and the viscosity of the fluid.\tMathematically:-F =6πηrv where\tLet retarding force F∝v where v =velocity of the sphere F ∝ r where r=radius of the sphereF∝η where η=coefficient of viscosity6π=constantStokes law is applicable only to laminar flow of liquids.It is not applicable to turbulent law.\t\t |
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| 10454. |
Magarment |
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| 10455. |
Find the time period and height of the satellite at height \'h\' from the earth? |
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| 10456. |
Using newton\'s law of gravitation prove keplars law of period. |
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| 10457. |
Cbse exam will be conducted between 1st January to 7th fab |
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Answer» Hi Yes |
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| 10458. |
Tricks for physics numericals |
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Answer» First you have note given items in this question otherwise no tricks Concept should be clear Whg |
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| 10459. |
2 particle moving with v and 2v speed what is speed of center of mass |
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Answer» R u in k r puram? Which school r u studying?? 0 |
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| 10460. |
In stress strain curve then D and E points are close to each other then what we call it |
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Answer» Because in this region the length of wire increases without any addition of load. E is fracture point. D and E is known as plastic region. A |
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| 10461. |
Distinguish between inertial and gravitational mass |
| Answer» Internal mass of a body is a measure of its inertia. It is determined using Newton\'s law of gravitation | |
| 10462. |
Difine average velocity |
| Answer» The average velocity of an object is its total displacement divided by the total time taken | |
| 10463. |
Derive the formula of geo statationary satellite |
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| 10464. |
Give me the examples of polar satellite? |
| Answer» Polar satellites revolve around the earth in a north-south direction around the earth as opposed to east-west like the geostationary satellites. They are very useful in applications where the field vision of the entire earth is required in a single day. Since the entire earth moves below them, this can be done easily. They are used in weather applications where predicting weather and climate-based disasters can be done in a short time. They are also used as relay stations.Examples are: SPOT, IERS, etc.. | |
| 10465. |
What is magnus |
| Answer» Magnus effect is the generation of a sidewise force on a spinning cylindrical or spherical solid immersed in a fluid (liquid or gas) when there is relative motion between the spinning body and the fluid. This\xa0effect explains commonly observed deviations from the typical trajectories of spinning balls in sport like table tennis, tennis, volleyball, golf, baseball and cricket.\xa0 | |
| 10466. |
Master bhi kehte ise na karna sikchit namm he hamara hemant dixit |
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| 10467. |
What are Applications of surface tension |
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| 10468. |
What is young modulus? |
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Answer» Why the way who are you? It is very easy process |
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| 10469. |
What is important in things in th chapter |
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| 10470. |
How to complete 6th chapter in one day |
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| 10471. |
Three bodies of mass 1,2,3kgs each 1m find the center of mass how to find coordinate in this |
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| 10472. |
What is conservative law? How we can prove it? |
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| 10473. |
Prove newton third law of motion |
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Answer» \tStatement of newton\'s third law of motion is " To every action there is always an equal and opposite reaction".\tThus,whenever a body exerts force on another then another object exert an equal force on previous body but in opposite direction\tForce example motion of rocket depends on the third law of motion i.e, action and reaction .Rocket exerts action force on gas jet in backward direction\tForce of action and reaction acts on different objects i.e,\tForce object 1 exerts on object 2= Force object 2 exerts on object 1\ti.e,\tF12=-F21\tAction=-(Reaction)\tAccording to Newtonian mechanics force is always a mutual interaction between the bodies and force always occurs in pairs\tEqual and opposite mutual forces between two bodies is the basic idea between Newton\'s third law of motion Swiming |
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| 10474. |
How much time will it take to cover physics part 2 class 11th qualitatively and quantitavely,both. |
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| 10475. |
The resultant of two forces 10N and 15N acting along +x and - x-axes respectively, is... |
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Answer» 5N negative side Explanation:It is given that,Force 1, F1 = 10 N (along +x axis)Force 2, F2 = 15 N (along -x axis)We need to find the resultant of two forces. Let the resultant is F. The angle between the both forces are 180 degrees. There resultant is given by :F = f1 - f2F = 10 N - 15 NF = -5 NSo, the resultant force is 5 N in -x axis. Hence, this is the required solution. |
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| 10476. |
Kapler law |
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Answer» Kepler’s third law\xa0of planetary motion is called the ‘law of periods’ According to this law, the square of the time period of a planet is directly proportional to the cube of the semi-major axis of its elliptical orbit. That is, T squared is proportional to R cubed, where T is the time taken by the planet for one rotation and R is the length of the semi-major axis of its elliptical orbit. Kepler’s laws revolutionised the field of astronomy and have helped people understand the configuration and movement of planets better. Kepler’s second law\xa0of planetary motion is the ‘law of areas’. According to this law, the line joining the sun and a planet, sweeps equal areas in equal intervals of time. Consider a planet revolving around the sun.\xa0Let ‘P1’ and ‘P2’ represent its positions at the start and end of 30-day duration. Let A1\xa0represent the area swept during this period. Similarly, let ‘P3’ and ‘P4’ represent two positions of the planet during its revolution for a 30-day duration represented by A2. According to Kepler’s second law of planetary motion, area A1\xa0equals area A2. The concept of Kepler’s second law can be understood by the fact that the angular momentum of the planet revolving in its orbit remains constant. This is because it is under the influence of a central force.\xa0The force of attraction pulls the planet towards the sun and the magnitude depends on the distance between them. For a body under the action of a central force, the angular momentum, ‘L’, which is the product of ‘mvr,’ remains constant. Where, ‘r’ is the radius vector; ‘v’ is the velocity vector and ‘m’ the mass of the body.\xa0 Kepler’s first law, the ‘law of orbits’, states that all the planets revolve in elliptical orbits with the sun at one of the focii of the ellipse (path of the planets).\xa0Observe the figure of\xa0ellipse. Points F1\xa0and F2\xa0are called the\xa0focii, and ‘O,’ is the centre of the ellipse. For any point ‘P’ on the ellipse, the sum of the lengths PF1\xa0and PF2\xa0is constant. So, as per the first law, the sun is at one of the focii of the ellipse and the planets rotate around it in elliptical orbits. Also the sum of the lengths PF1\xa0and PF2\xa0is always constant. |
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| 10477. |
Important question in all chalters.. |
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Answer» Yeah!! Sorry for worng typing Chaltters ? I think? it\'s a ➡CHAPTER Whats chalters..????? What you mean by chalters??? |
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| 10478. |
What is heat engine |
| Answer» Heat Engines\tIn a heat engine a body is configured to do work when placed in alternating contact with hot and cold bodies so that heat can be supplied and absorbed. In simple terms heat engine is a device which converts thermal energy to mechanical energy. | |
| 10479. |
Which one is more stronger hollaw pipe and solid rod having same length and mass also |
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Answer» Solid rod Solid rod Hollaw rod Solid rod |
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| 10480. |
What is the angle between non zero vectors |A +B|=|A×B| |
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Answer» Thanks?? 90degree or pi/2 |
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| 10481. |
Dead beat galvanometer |
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| 10482. |
What is temperature? |
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Answer» It is the measure of hotness or coldness It is the average internal energy Th degree of Hotness or Coldness is called Temperature. |
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| 10483. |
1newton=? |
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Answer» Kgms^-2 100000 dyne |
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| 10484. |
Asecent formula |
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| 10485. |
What is Bernoulli \'s Theorm ? |
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Answer» Thanks These theorem states that the streamline flow of an ideal liquid the total energy ( pressure energy,potential energy,kinetic energy ) per unit mass remains constant at every cross section though out the flow. Answer please What is Bernoulli\'s theorm |
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| 10486. |
Derivations of kinematic equations |
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| 10487. |
Any buddy is here to help me in physics and economics |
| Answer» Only in physics | |
| 10488. |
Why mercury always fill in a thermometer ??? |
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Answer» Mercury is applied ina a thermometer because due to its higher density ie 136×1000 \tIt has a lower freezing point (-39°C) and a high boiling point (35°C). Hence it can be used over a wide range of temperature.\tIt is shiny liquid metal, hence can be easily seen through the glass of the thermometer tube.\tIt has a fairly large expansion for a small change in temperature.\tIt does not stick to the glass tube. |
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| 10489. |
What is ypungs modulus |
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Answer» Ratio of longitudinal stress to the longitudinal strain It is the ratio of longitudinal stress to the longitudinal strain |
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| 10490. |
Modes of heat transfer |
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Answer» There are three modes of heat transfer. Heat transfer or transmission of heat from one place to another takes place by three different ways that are:\tConduction\tConvection and\tRadiation There are three modes namely. Conduction, convection and radiation ☺ |
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| 10491. |
Relation between alpha and beta |
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Answer» alfa=beta/2 Alpha/1=Beta/2=Gama/3 Find kya krna h Can u answer my question alpha = beta /beta+1 whereas beta =alpha /alpha+1 |
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| 10492. |
Define the term stress and it\'s types . |
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Answer» Thanks a lot of yiu When the deforming force is applied to an object. The object deforms. In order to bring the object back to the original shape and size, there will be an opposing force generated inside the object.This restoring force will be equal in magnitude and opposite in direction to the applied deforming force. The measure of this restoring force generated per unit area of the material is called Stress.There are several different types of stress in physics but mainly it is categorized into two forms that are Normal Stress and Tangential or Shearing Stress. Some stress types are discussed in the points below.Normal Stress:As the name suggests, Stress is said to be Normal stress when the direction of the deforming force is perpendicular to the cross-sectional area of the body. The length of the wire or the volume of the body changes stress will be at normal. Normal stress can be further classified into two types based on the dimension of force-\tLongitudinal stress\tBulk Stress or Volumetric stressLongitudinal Stress:Consider a cylinder. When two cross-sectional areas of the cylinder are subjected to equal and opposite forces the stress experienced by the cylinder is called longitudinal stress.Tensile StressIf the deforming force or applied force results in the increase in the object’s length then the resulting stress is termed as tensile stress. For example: When a rod or wire is stretched by pulling it with equal and opposite forces(outwards) at both ends.Compressive StressIf the deforming force or applied force results in the decrease in the object’s length then the resulting stress is termed as compressive stress. For example: When a rod or wire is compressed/squeezed by pushing it with equal and opposite forces(inwards) at both ends. |
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| 10493. |
Ampere circuital law can be derived from |
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| 10494. |
why in Solids the repulsive intermolecular forces are more important than attractive ones? |
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| 10495. |
What is the unit of magnetic intensity |
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Answer» Your answer is Tesla (T) The SI Unit is Tesla (T). |
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| 10496. |
Describe applications of elastic behaviour of materials. |
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Answer» In the construction of various structures like bridges, columns, pillars, beams, etc. Knowledge of the strength of the materials used in the construction is of prime importance.For example: While constructing a bridge, a load of traffic that it can withstand should be adequately measured beforehand. Or while constructing a crane used to lift loads, it is kept in mind that the extension of the rope does not exceed the elastic limit of rope. To overcome the problem of bending under force the elastic behaviour of the material used must be considered primarily. It make the study of material easy |
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| 10497. |
Strain formula |
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Answer» Change in dimension/actual dimension Stress is directly proportional to strain.Strain=stress/y. A/T hooks law Chage in configuration/original configuration Change in configuration by configuration |
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| 10498. |
what is the angle made by vector 2i^+ 2j^ with x axis |
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Answer» 45° 90\' ? |
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| 10499. |
Work done on the system is postive or negative |
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Answer» Work can be positive or negative Positive work - when angle between force and displacement is less than 90° and more than o° Negative work - when angle between force and displacement is more than 90° or less than or equal to180° Positive In physics work done on the system is negative and in chemistry it is reverse of that |
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| 10500. |
The proof of parallel axis theorem |
| Answer» Not in syllabus.any have it was availble in unifies Degree books | |