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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.
| 4801. |
How to solve the value tan 32 |
| Answer» Use calculus | |
| 4802. |
How to solve integration |
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Answer» Integration formula is X ki power n+1 upon n you can try this formula . You can better learn it from youtube as it\'s difficult here to make you understand properly hope it help. |
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| 4803. |
What do you understand by error of measurements? Discuss briefly the various types of error |
| Answer» An error or fault can be described as the disparity between the calculated worth and the exact worth. For instance, if the two machinists use a similar instrument for discovering the errors in measurement, it is not required that they may acquire the related outcomes. But, there will be a slight variation between both the measurements which is known as an error. The errors in measurement may happen from the various sources which are generally categorized into the following types. These are clarified beneath in details.Systematic ErrorsGross ErrorsRandom ErrorsThese types of systematic errors are generally categorized into three types which are explained below in detail. Observational ErrorsEnvironmental ErrorsInstrumental ErrorsSystematic Errors | |
| 4804. |
What do you know about SI? Write all fundamental and supplementary units of SI? |
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Answer» Thank you Basic SI UnitsPhysical quantity\tquantitysymbol\tBasic SI Unit Name\tUnit Symbollength\tl, b, d, h, r, s, etc.\tmetre\tmmass\tm\tkilogram\tkgtime\tt\tsecond\tselectric current\tI\tampere\tAthermodynamic temperature\tT\tkelvin\tKamount of substance\tn\tmole\tmolluminous intensity\tIv\tcandela\tcd.Supplementary Dimensionless SI UnitsQuantity\tQuantitysymbol\tSI Unit Name\tUnit Symbol\tExp. in SI base unitsplane angle\tα, β, γ, θ, Φ\tradian\trad\tm m-1solid angle\tω, Ω\tsteradian\tsr\tm2 m-2 |
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| 4805. |
Is any one from vayar mandal vishvas school |
| Answer» No | |
| 4806. |
Is any one from army public school |
| Answer» | |
| 4807. |
How to learn derivation in physics |
| Answer» Head down back on lawn | |
| 4808. |
Because of which property of object it tries to oppose the change? |
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Answer» Inertia From which chapter is this question |
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| 4809. |
Momentum of two object with different mass is equal . Which object have more speed? |
| Answer» Small | |
| 4810. |
why is gravitational potential energy always negative |
| Answer» | |
| 4811. |
Why does a projectile fired along the horizontal not follow a straight line path? |
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Answer» At every point it change its acceleration due to gravity Because projected objet travel under the efect of gravity thats why its band at certain angle at deferent position Due to acceleration caused by gravity |
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| 4812. |
Define centripetal acceleration. |
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Answer» The acceleration in a circular motion which act towards the centre of object is called centripetal acceleration The acceleration which is towards the center of circular motion is known as centripetal acceleration |
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| 4813. |
Gigihojljljkgjfut8yl |
| Answer» Wonderful question bro...?? | |
| 4814. |
find an expression for gravitational intensity due to earth at a point on its free surface |
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Answer» Gravitational forceF = GMm/R2Gravitational intensity of earth at point AI = F/m = GMm/R2/mI = GM/R2 GM /r*r |
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| 4815. |
what is zero law of thermodynamics fully exaplaned |
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Answer» If first and second system are in thermal equilibriumto third system individually and separately then system 1st and 2nd will be in thermal equilibrium Let us consider the two systems A and B and both the systems are isolated by adiabatic wall. That means neither energy nor matter can enter or leave either system. In this case both the systems cannot communicate through this wall since it is an adiabatic wall.Now we replace the adiabatic wall with diathermic wall, which permits the flow of energy in the form of heat and finally it will reach thermal equilibrium.Now instead of two systems, consider three systems A, B and C. The systems A and B are separated by an adiabatic wall, while each is in contact with a third system C, through a conducting wall.The states of the systems which is characterized by certain macroscopic variables, will change until both A and B come into thermal equilibrium with C.After this stage the adiabatic wall between the systems A and B is replaced by a conducting wall and the system C is insulated from A and B by an adiabatic wall.Observation:\xa0We found that the states of A and B remains as in the previous case. That means both the systems are in thermal equilibrium with each other.Observation Leads to Defining Law:\xa0"If two systems are at the same time in thermal equilibrium with a third system, they are in thermal equilibrium with each other. If A and C are in thermal equilibrium with B, then A is in thermal equilibrium with B". This statement is called as Zeroth Law.Practically this means that all three are at the same temperature, and it forms the basis for comparison of temperatures.The Zeroth law is more fundamental than first and second law even though actually it was stated much later than both the First and Second Laws of thermodynamics. It is so named because it logically precedes the First and Second Laws of Thermodynamics.The Zeroth Law clearly suggests that when two systems A and B, are in thermal equilibrium then there must be a physical quantity that has the same value for both the systems.This physical quantity is a new thermodynamic parameter whose value is equal for two systems in thermal equilibrium and is called as\xa0temperature\xa0(T). This is the only property which allows us to think of the possible make and use of thermometer.If A and B are separately in equilibrium with C, thenTA\xa0= TC\xa0and\xa0TB\xa0= TCThis leads to\xa0TA\xa0= TBi.e. the systems A and B are also in thermal equilibrium. |
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| 4816. |
A body is weightless at the centre of earth. why |
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Answer» Because there the gravity effect is zero As we know mass*gravity known as weight at the centre of the earth the gravity is 0 |
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| 4817. |
Show that the length of seconds pendulum is nearly 1m |
| Answer» it can be found using the equation T is equal to 2πby under root l by g we know that acceleration due to gravity is 9.8 metre/sec^2 on earth ..use the equation to find out.T= 2π√l÷g = | |
| 4818. |
What is yield point or strength? (Help in your language only) |
| Answer» It is the material property at which material begins to deform plastically | |
| 4819. |
Give example of a motion where x>0,v0 at a particular instant |
| Answer» | |
| 4820. |
to make a paper scale of the given least count 0.2cm , 0.5cm |
| Answer» | |
| 4821. |
Ellastic collision |
| Answer» It is the collision where no loss of kinetic energy | |
| 4822. |
Youngs modules of steel is 19×10^10 n/m^2 express it in dyne cm^3 |
| Answer» 1N = 100000 dynes = 105 dynes1m2 = 10000 cm2 = 104 cm21N/m2 = 109 dynes/cm2So 19\xa0{tex}\\times{/tex}1010\xa0N/m2 = 19\xa0{tex}\\times{/tex}1010{tex}\\times{/tex}109 = 1.9\xa0{tex}\\times{/tex}1020\xa0dynes/cm2 | |
| 4823. |
How to convert 1ly into A.U |
| Answer» | |
| 4824. |
In any triangle ABC ; prove that a / sinA = b/ sin B = c/ sin C |
| Answer» | |
| 4825. |
When is the value of angle between force and displacement zero |
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Answer» When normal reaction and gravitational force are perpendicular to each other. When object is at rest In rest position |
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| 4826. |
Why the time taken is equal when any object is thrown upward and it moves back downward |
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Answer» The time taken is equal when an object is thrown upward and its moves backward because the time taken by the object to move upward as the object move upward the speed of object decrease with time to time and reach the position where the speed is zero that position is called maximum height and due to gravitational force the object move backward towards the surface as increases its speed or velocity time to time. Here the common things is time which is equal to move upward and downward By taking example yo will come know... Because , time of flight = 2u/g (for complete journey) and for time taken to up divide it by 2. And time of flight can be solved by equation S=ut-1/2gt²(case of motion under gravity) |
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| 4827. |
What is1 newton |
| Answer» If 1 m per second square acceleration is produced in a mass of 1 kg | |
| 4828. |
Origin of friction? |
| Answer» | |
| 4829. |
Find the stress of rod if it is allowed to expand by 1 millimetre |
| Answer» | |
| 4830. |
Parallaxes terome |
| Answer» | |
| 4831. |
A spring is cut into two halves. What is spring constant on two halves affected |
| Answer» | |
| 4832. |
How much change will in kinetic energy if momentum is increased by 10 percent? |
| Answer» Let the initial mass of the body be m and its velocity be v.Initial momentum of the body = mvInitial KE = mv^2/2If the momentum increases by 10%, new momentum = mv + 10% of mv= mv + 10/100mv= mv + mv/10=11mv/10=m(11v/10)New velocity = 11v/10Increase in velocity = v/10New KE = m(11v/10)^2/2= 121/100mv^2/2Increase in KE = 21% | |
| 4833. |
What is gyration |
| Answer» Gyration means that the distance where a entire body can be placed frome the axis so that its moment of inertia is same about given axis | |
| 4834. |
Use of elastic collision in nuclear reactors |
| Answer» | |
| 4835. |
equation for Boyle law |
| Answer» P1V1=P2V2 | |
| 4836. |
Explain conservation of linear momentum by sutiable example |
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Answer» If the net external force acting on a system of bodies is zero, then the momentum of the system remains constant. This is the basic law of conservation of linear momentum.1) When a bullet is fired from a gun, the recoil of the gun can be explained on the basis of the law of conservation of linear momentum.2) When a heavy nucleus at rest disintegrates into two smaller nuclei, the products move in opposite directions, obeying the law of conservation of linear momentum.3) The motion of rockets is obeyed by the law of conservation of linear momentum. Here initial momentum is equal to final momentum ex is recoiling of gun |
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| 4837. |
When mass and energy equivalent and how derivat |
| Answer» | |
| 4838. |
What is angular momentum unit |
| Answer» Kg m2/sec | |
| 4839. |
2i+aj+k, B= 4i-2j-2k find a |
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Answer» 3 A perpendicular B equal to 0 A cross B .Value of a A --equal 3 If thita is equal to 90°then a=3 But if thita is 0°then a=-3 3 |
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| 4840. |
What are the five limitations of Dimensional analysis |
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Answer» Five limitations of dimensional analysis-1. The method does not give any information about dimensionless constant K.2. It fails when a physical quantity depends on more than three physical quantities.3. It fails When a physical quantity (e.g., s=ut+1/2at square 2) is sum or difference of two or more quantities. 4. It falls to derive relationships which involve trigonometric, logarithm or exponential functions. 5. Sometimes, it difficult to identify the factors on which physical quantities depends. What is the pascals law? |
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| 4841. |
Angle has a unit but it has no dimensions |
| Answer» | |
| 4842. |
Impulsive force formula |
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Answer» Impulsive force J=Ft or J=P2-P1 change in momentum Umpul |
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| 4843. |
What is collisions |
| Answer» | |
| 4844. |
Property of friction |
| Answer» | |
| 4845. |
Can a body he constant velocity and still have varying speed. |
| Answer» No velocity cannot be constant if a body have different speed or direction. Since it is a vector quantity is it must have constant speed as well as direction. Speed is a magnitude of velocity | |
| 4846. |
Can a body have zero velocity and still be accelerating.? |
| Answer» Yes it is possible when the body covers displacement zero in the circular path | |
| 4847. |
A ball is thtown straight up.what is the velocity amd acceleration at the top? |
| Answer» Zero | |
| 4848. |
Dimensional |
| Answer» | |
| 4849. |
How many derivation in chapter system of particles |
| Answer» | |
| 4850. |
Electromagnetic forces |
| Answer» Electromagnetism is a branch of physics involving the study of the electromagnetic force, a type of physical interaction that occurs between electrically charged particles. | |