InterviewSolution
Saved Bookmarks
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.
| 601. |
What type of wave during under exploision under water |
| Answer» | |
| 602. |
What type of wave during exploision under water |
| Answer» | |
| 603. |
Orthogonal and coplanar and localised vector |
| Answer» | |
| 604. |
Height needed by the body inside the liquid coloumn to overflow |
| Answer» | |
| 605. |
Convert 1 kwh in joule |
| Answer» 1kWh = 1 kilowatt × 1 hour= 1000 watt × 3600 s= 3.6 × 106 J\xa0 | |
| 606. |
Define fraction point |
| Answer» A point in which any material is break down and its elasticity is completely end | |
| 607. |
What does newton\'s first law tell? |
| Answer» According to Newton\'s first law =>Each an every object in the universe, remains in its state of rest or motion ,untill and unless some external force is applied on it. | |
| 608. |
Reletion btween G and g |
| Answer» G stands for Newton\'s universal gravitational constant, whereas g stands for the acceleration due to gravity at a certain point.G =\xa06.67300 × 10-11\xa0N.m2.kg-2.\xa0G is a constant throughout space and time.g = 9.8 m.s-2. g is a variable quantity.G is a scalar quantity whereas g is a vector qualtity.\xa0\xa0(According to Newton\'s law of universal gravitation the force of attraction between two bodies is given by F = GMm/r2, where the symbols stand for their usual well known meanings. Also the weight of a body of mass m is F = mg.So mg =\xa0GMm/r2,\xa0or g = GM/r2g is a constant at a given location, which depends upon M and r.) | |
| 609. |
When an air bubble rises in water what happens to its potential energy? |
| Answer» Potential energy of air bubble decreases, because work is done by upthrust on the bubble.work done = - (change in potential energy )here bubble rise due to net force(buoyancy force , gravitational force, drag force which is negligible) so work done by this net force is positive since force and displacement is in the same direction. so change in P.E. is negative, this means potential energy is decreasing | |
| 610. |
Dimension of viscosity |
| Answer» ML^-1T^-1<br>M/LT= ML-1T-1 | |
| 611. |
What is the relation between areal magnification and linear magnification |
| Answer» M(areal)=square of M (linear) | |
| 612. |
Find the relation between surface energy and surface tension |
| Answer» Relation between surface energy and surface tension is given by dE=T(dA)Where, E=surface energy. T=surface tension. dA=change in surface area.....??????? | |
| 613. |
Formula of volume of irregular lamina |
| Answer» Area×height | |
| 614. |
What is the value of specific heat in adiabatic process |
| Answer» It is asking the ratio of cp and cv<br>Are u studying in dis this question was in today\'s physics exam<br>1.66<br>Specific Heat Formula is S=Q/mdT For adiabatic process There will be no transfer of heat or matter therefore y first law of thermodynamics dQ = dU + dWdQ = 0 for adiabatic..therefore S= 0 | |
| 615. |
The principle of superposition of waves |
| Answer» | |
| 616. |
Isochoric process |
| Answer» Volume constant<br>when volume is kept constant<br>When Volume is constant. | |
| 617. |
How does the momentum of a body change if the kinetic energy is doubled |
| Answer» P=√2M KE therefore when ke is double then momentum of a body change as squareroot of 2 | |
| 618. |
what is the cause of excess pressure inside bubble |
| Answer» It is due to surface tension which is balance in the bubble by the inside pressure and soap film pressure and external pressure | |
| 619. |
Define two principal specific heats of gas and show Cp is greater than Cv. |
| Answer» | |
| 620. |
An object of mass 2kg is moving with acceleration of 50 cm/s2. Then force acting on it . ... |
| Answer» | |
| 621. |
Pollerizatin |
| Answer» | |
| 622. |
Dimension formula for frequency |
| Answer» No......it is M°L°T^-1......Becoz,, frequency=1/time period<br>MLT–1 | |
| 623. |
The Fisrt law of thermodynamics |
| Answer» The change in heat of any system is always equal to sum of its internal energy and work done<br>∆H=∆Q+W | |
| 624. |
What do you mean by triple point of water? Why is it unique? |
| Answer» It is the temperature at which the three phases of water, namely, ice, liquid water and water vapour are equally stable and coexistent. The triple point is suitable because it is unique, i.e., it occurs at one single temperature = 273.15 K and one single pressure of about 0.46 cm of the Hg column. This point is unique because any temperature or pressure higher or lower will change the phase of one or more states of water. | |
| 625. |
What is law of conservation and give examples in daily life |
| Answer» According to this law:”The momentum of an isolated system of two or more than two interacting bodies remains constant.”Momentum of a system depends on its mass and velocity.A system is a group of bodies within certain boundaries .An isolated system is a group of interacting bodies on which no external force is acting.Example:\tThe gun recoils when a bullet is fired.\tA collision of two cars or balls | |
| 626. |
What is the time period of 2nd pendulam |
| Answer» Time=2π√L/g 2 (3.14)√1/9.8= 1.9999999<br>2seconds | |
| 627. |
What is thermometer |
| Answer» Temperature is measured with the help of thermometer. Mercury and Alcohol are commonly used liquids in the liquid-in-glass thermometers.\tTo construct a thermometer two fixed points are to be chosen as a reference points. These fixed points are known asfreezing(ice point) and boiling point(steam point). The water freezes and boils at these two points under standard pressure.\tThe ice and steam point in Fahrenheit Temperature scale are 32°F and 212 °F resp.It has 180 equal intervals between two reference points.\tOn Celsius Scale values are 0°C and 100°C for ice and steam point resp. It has 100 equal intervals between two reference points. | |
| 628. |
Why is it hotter at the same distance over the top of the fire then in front of it? |
| Answer» | |
| 629. |
The blood pressure in human is greater at the feet then at brain. Why? |
| Answer» | |
| 630. |
Derivation of bernauli`s theorem |
| Answer» It is derivation of about 1and half page ......search in book SL Arora it is breifly explained | |
| 631. |
Bernollies principal |
| Answer» according to bernoullies principal as we move along a streamline then pressure ,kinetic energy per volumeand potential energy per volume is constant.p+pv^2/2+pgh= constant. | |
| 632. |
न्यूटन का नियम |
| Answer» | |
| 633. |
Define the term Cr and Cv. Derive the relation between Cr and Cv |
| Answer» | |
| 634. |
What is Stroke\'s formula and derive it |
| Answer» Its not strokes, it\'s stokes law:-The viscous drag force(f) on the sphere of radius(r)with velocity (v) through a fluid of viscosity(n) is f=6πnrv. | |
| 635. |
What is barnoli\'s threom |
| Answer» Bernoulill\'s theorem:-The sum of pressures(P),the kinetic energy per unit volume,the potential energy per unit volume of a fluid incompressible,non-viscous and along streamline flow remains constant. | |
| 636. |
What is lapla\'s correction? |
| Answer» | |
| 637. |
What is dopler\'s effect? |
| Answer» | |
| 638. |
Explain why the blood pressure in humans is greater at feet than at the brain? |
| Answer» Hdg because of liquid column | |
| 639. |
Plot a graph between strees and strain for elastic body |
| Answer» | |
| 640. |
Physics questionssssss |
| Answer» | |
| 641. |
Physics questions plzzzzzz |
| Answer» | |
| 642. |
Ask questions in physics |
| Answer» | |
| 643. |
Define lami\'s thorem? |
| Answer» according to this theorem when three concurrent forces f1,f2 and f3 acting on a body in equilibrium then three concurrent forces acting at some angles.f1/ sin alpha =f2/sin beta=f3/sin gamma.<br>It is sine rule if the forces are equilibrium then the force vectors will form a closed triangle which means that there resultant is zero . | |
| 644. |
Can you give the proof of formula wl3/4bd3Y |
| Answer» I was not able to write it in a proper way man sorry<br>If you want, you can use the calculus of variations to find a steady-state y minimizing potential energy. It is not too hard: take the correct expression U=∫dx(F(x)y(x)−YI[y′′(x)]2)U=∫dx(F(x)y(x)−YI[y″(x)]2) and replace y(x)→y(x)+δy(x)y(x)→y(x)+δy(x), looking for δU=∫dx(F δy−Y I [(y′′+δy′′)2−(y′′)2])=0δU=∫dx(F δy−Y I [(y″+δy″)2−(y″)2])=0. Ignoring (δy′′)2(δy″)2 you integrate by parts twice: ∫dx(F−Y I y′′′′)δy=0∫dx(F−Y I y⁗)δy=0 can only be 00 for all δyδy if F=Y I y′′′′.F=Y I y⁗. (But, F(x) does have a δ function | |
| 645. |
What is thermal conductivity |
| Answer» Thermal conductivity is the measure of the property of the substance which allows flow of heat it is the opposite of thermal resistance it\'s numerical value is heat flow /teperarure gradient * cross sectional area | |
| 646. |
Anyone send me physic paper class 11 |
| Answer» We can\'t send here images | |
| 647. |
Conservative force |
| Answer» work done by the force displacing an object depend on the initial and final position and not on the nature of path ..<br>Conservativr forces are those forces which are independent to path....i.e they are not depends upon path...Ex-. Spring force, gravitational force,etc... | |
| 648. |
Derive an expression for excess pressure inside the a soap bubble |
| Answer» Expression for Excess pressure inside the soap bubble....=> F-inside = Force-outside +(T×2πr)×2...=>P(inside)×(πr^2)=P(outside)×(πr^2)=> Cancel out whatever is being cancelled...=> P(inside)=P(outside)+4T/R=> P(excess)= Pi -Po=4T/R.......Hope this helps uh...<br>4T/R | |
| 649. |
State and prove theorem of parallel axis |
| Answer» I=MR^2+ mass(square of the radius)I=MR^2+MR^2<br>The Theorem of Parallel axes states that the moment of inertia of a rigid body about any axis is equal to the sum of its moment of inertia about parallel axis through the centre of mass and the square of the distance between the two axes. | |
| 650. |
Is temperature is a microscopic or macroscopic concept? |
| Answer» Temperature can be defined in macroscopic terms, using concepts of thermodynamics, as an intrinsic property of matter that quantifies the ability of one body to transfer thermal energy (heat) to another body.temperature can also be defined on a microscopic scale as proportional to the random kinetic energy | |