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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.
| 951. |
What is expression of potential energy for strained body |
| Answer» But what about strained body<br>It depends on hieght if it us on ground then mas ×height of body ×gravitational constant | |
| 952. |
Obtain relation between coefficient of linear expansion and coefficient of volume expansion. |
| Answer» 3alpha = gammaAlpha is cofficient of linear expensionGamma is cofficient of volume expansion<br>https://www.quora.com/What-is-the-coefficient-of-cubical-expansionRefer to this<br>alpha/beta/gamma1:2:3 | |
| 953. |
Show vertical oscillation of a loaded spring is simple hermonic |
| Answer» u want to know in series or in parallel combination | |
| 954. |
What is perpendicular axis theorem |
| Answer» It states that moment of inertia of a plane lamina about an axis perpendicular to its plane equal to the sum of moment of inertia of the lamina about any two mutually perpendicular axises in its plane and intersecting each other at the point where the perpendicular axises passes through it.<br>In physics, the perpendicular axis theorem can be used to determine the moment of inertia of a rigid object that lies entirely within a plane, about an axis perpendicular to the plane, given the moments of inertia of the object about two perpendicular axes lying within the plane | |
| 955. |
In which motion , momentum change but kinetic energy does not |
| Answer» In uniform circular motion.i am not sure | |
| 956. |
Banking of roads |
| Answer» its divided into 3 parts which part u want to know | |
| 957. |
What is gravitaional force |
| Answer» The gravitational force is a force that attracts any two objects with mass.It always tries to pull masses together, it never pushes them apart. In fact, every object, including you, is pulling on every other object in the entire universe! This is called Newton\'s Universal Law of Gravitation.F=(GMm)/r^2. This equation describes the force between any two objects in the universe: | |
| 958. |
What do you mean by frame of reference?¿ what are the types of frame of reference?¿ explain them... |
| Answer» "Easy"<br>Please in a esay manner....? | |
| 959. |
What is the importance topics of K.T.G |
| Answer» | |
| 960. |
What is gravitational p.e? |
| Answer» Gravitational p.e is the a body have mass with relation with another massive object due to gravity, it is the potential energy associated with gravitational energy | |
| 961. |
Define angular momentum |
| Answer» It is defined as the moment of linear momentum .It is denoted by L and it is a vector quantity. L=r×p<br>Particle move about there axis its is a product of linear momentum and distance of a particle of there axis | |
| 962. |
derive and expression for work done and potential energy for a spring under extension or compression |
| Answer» | |
| 963. |
What is adiabatic process? |
| Answer» Pressure is constt<br>A process in which heat exchange is zero or DQ =0 . This process occurs in an isolated system.<br>An adiabatic process occurs without transfer of heat or mass of substances between a thermodynamic system and its surroundings. In an adiabatic process, energy is transferred to the surroundings only as work | |
| 964. |
V=a+b/t+c find a,b,c |
| Answer» | |
| 965. |
If y=a+bt+ct(square)t,where y is meters and t is second . What are the units of b and c |
| Answer» Unit of b - m/sUnit of c - m/s^2 | |
| 966. |
What is momentum..Its SI unit |
| Answer» Momentum is the quantity of motion of a moving body, measured as a product of its mass and velocity.\xa0it formula = mass × velocity\xa0so it\'s SI unit is = kg×m/s = kg m/s\xa0 | |
| 967. |
Newton first law of motion derivation |
| Answer» | |
| 968. |
Why pv*(gamma) is constant and why it is use in laplace correction in speed of sound? |
| Answer» The formula for the velocity of sound is √k/ro newton found the velocity 280m/sec laplace corrected it by putting gamma p in place of K therefore giving the velocity 332.5m/sec | |
| 969. |
Polygon law of vector additon |
| Answer» | |
| 970. |
Prove that newton\'s 2nd law is the real law of motion. |
| Answer» Newton second law is real law of motion because we can derive Newton 1st law from Newton third law.To prove first law:We know, F=maIf no force act on Body So, F=0ma=0=>a=0/m0=aOR a=0It indicates either body is at rest or moving with constant speed which is first law of motion To prove third law:-F=dp/dt___1Let f\' is acting on 2nd body:-f\'=dp\'/dt____2Add 1 and 2:F+F\'=dp/dt+dp\'/dt F+F\'=d/dt(p+p\') F+F\'=d/dt(constant) F+F\'=d/dt(0)F+F\'=0F=-F\'Hence, action and reaction are equal and opposite direction | |
| 971. |
What is carnot heat engine |
| Answer» A carnot heat engine is a theoretical engine that operats on the reversible carnot cycle | |
| 972. |
erg per meter can be the unit of mesure of |
| Answer» For ce | |
| 973. |
What Is kinetic energy in shm |
| Answer» | |
| 974. |
Lifeline of a photon |
| Answer» | |
| 975. |
State Bernoulli\'s theorem and pascal law |
| Answer» Bernoullis theorem states that for any stream line flow of liquid the sum pressure energy, potential energy , kinetic energy remains constant for every cross section of the liquid<br>Pascals law states that in an inclosed fluid,if an increased pressure is produced in any part of the fluid,then this change of pressure is transmitted undiminished to all the other part of fluid.<br>Bernoulli\'s theorem states that the total energy i.e.pressure energy,potential energy and kinetic energy of an incompressible and non-viscous fluid in steady flow through a pipe remains constant throughout the flow provided there is no source or sink of the fluid along the lenght of pipe. | |
| 976. |
Differentiate between isothermal and adiabatic |
| Answer» Isothermal is slow process at constant temperature,whereas adiabatic is fast at constant heat exchange b/w system and surrounding.<br>Isothermal in which temperature remains constant and adiabatic is in which heat cannot exchange in system ,heat can neither leave nor enter in the surrounding<br>In isothermal delta "U=0 "and where in adiabatic process "Q=0". | |
| 977. |
What is vector quantities? |
| Answer» Vector quantities are those quantities which require magnitude as well as direction for their complete specifications. Vectors are physical quantities, which besides\xa0having both magnitude and direction also obey the law of geometrical addition.\xa0(The law of geometrical addition, i.e. the law of triangular addition and law of parallelogram are discussed later in this chapter). Some physical quantities, which are vectors are displacement, velocity, acceleration, force, electric intensity, magnetic intensity, magnetic moment etc. Vector quantities cannot, in general, be added in algebraically. | |
| 978. |
What is the principle of homoginity |
| Answer» The\xa0principle of homogeneity\xa0is that the\xa0dimensions\xa0of each the terms of a dimensional equation on both sides are the same . Any equation or formula involving\xa0dimensions\xa0(like mass, length, time , temperature electricity) have the terms with same dimensions. | |
| 979. |
What is steradian ?explain in simple words. |
| Answer» Unit of an solid angle. | |
| 980. |
Write four fundamental forces in the ascending order of their strength |
| Answer» Gravitational force,week nuclear foce electrostatic force and strong nuclear foce | |
| 981. |
Dopplers effect concept |
| Answer» It is the effect which occur between the souce of wave and the observer provided that bogh r in motion | |
| 982. |
What is oscillatiob |
| Answer» Oscillation refers to any Periodic Motion moving at a distance about the equilibrium position and repeat itself over and over for a period of time . | |
| 983. |
List the factors on which the resistance of a conductor in the shape of a wire depends |
| Answer» | |
| 984. |
Please give me blue print of physics and chemistry |
| Answer» | |
| 985. |
What do you understand by phase |
| Answer» It is the argument of sin or cosine function | |
| 986. |
How is viscous force different from fricton |
| Answer» | |
| 987. |
Physics 11th 2019 class cbse sample paper |
| Answer» | |
| 988. |
I need 2019 chpterwise marks distribution for class 11th physics |
| Answer» | |
| 989. |
Which chapter is most imPortant in physics |
| Answer» All chapters are important only few topics in each chapter can be skipped<br>According to me hydrostatic,ray optics and thermodynamic are also very important<br>Not only one chapter is importantSome chapters are there like system of particles,equations of motions,rotation etc. | |
| 990. |
What is carnot engine and write an expression for it and draw the graph for it??? |
| Answer» It is an ideal reversible heat engine | |
| 991. |
Poission ratio |
| Answer» | |
| 992. |
How and why friction force is independent on area of contact |
| Answer» | |
| 993. |
Derive the relation between g & G |
| Answer» F=GMm/R^2F=mgTherefore comparing 1 and 2 eq. ,GMm/R^2=mgTherefore g=GM/R^2<br>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.)<br>g=( GM)/R^2 | |
| 994. |
Define conduction convection and radiation |
| Answer» Radiation is the emission and propagation of energy in the form of rays or waves. The energy radiated or transmitted in the form of rays, waves, or particles. .......?<br>Convection is the process in which heat moves through a gas or a liquid as the hotter part rises and the cooler, heavier part sinks........?<br>Conduction is the process by which heat or electricity passes through a material......? | |
| 995. |
if you close one end of an open pipe, what happens to wavelength of fundamental not? |
| Answer» | |
| 996. |
Please proove the equation of second law of motion by calculus method...??? |
| Answer» | |
| 997. |
velocity at any time in angular projectile motion |
| Answer» | |
| 998. |
show that in elastic collision bodies of same mass exchange their velocity after collision |
| Answer» If m1=m2=mv1=(m-m)u1/2m+2mu2/2mv1=u2Similarly,v2= u1<br>He vinay it is a spl. Case in the topic of elastic colision plz see the pardeep book It is well defined in the book | |
| 999. |
What are conservative force explane with example? |
| Answer» Eg gravitational force. The force whose work done dont depend upon path followed . | |
| 1000. |
What does rad stand for in physics? |
| Answer» It can be radian for angle or radar for boats<br>It might be radians(angle)<br>Radian | |