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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.
| 701. |
Application of law of conservation of momentum. |
| Answer» Recoil of gun and explosion of bomb<br>Tu agar khadi h toh momentum k vajhe se baithi h toh momentum ki vajhe se......ye application h .....samjha budhu<br>Momentum will remain constant until and unless any external force comes into action. ig. Swinging of pendulum.... | |
| 702. |
State and explain Newton\'s law of cooling how would you verify its experimentally in laboratory |
| Answer» Rate of loss of heat is directly prportional to tempreature diff. between system and surrounding. | |
| 703. |
Explain bernouilli\'s theorem |
| Answer» To understand this concept just watch video no.16,17 n 18 of chapter machanical properties of fluids in this app.<br>Sum of all energies like Pe, k.e., p.e are constant at per unit mass and volume.Pe+ K.E.+P.E.= constant. | |
| 704. |
Is there any difference between liquid bubble and soap bubble....? |
| Answer» Thanks Meghna<br>Yes correct<br>Yes therw is a difference in them...In liquid bubble...there is only one film (i.e only one surface) but in soap bubble , it has 2 films(i.e double surface)... | |
| 705. |
What what is the value of m director if a is equals to A=2i+3j-4kB=3i-mj+6k |
| Answer» -6 | |
| 706. |
A ball bounce 89%of its original height calculate the change in its momentum |
| Answer» | |
| 707. |
Derive an expression for the acceleràtion of a partical executing |
| Answer» | |
| 708. |
Tell me important topics of class11 physics |
| Answer» Bernoulli\'s theorem, Stoke\'s law of viscosity, parallax method, types of flows, dopler effect numerical, position time graph, types of forces with numerical, difference between reflection and refraction, carnot, efficiency, refrigerator principle, equation of continuity, significance of moment of inertia, first law of thermodynamics, ascent formula, banking of roads, expression of excess pressure, correctness of formula, collisions, degree of freeedom, simple pendulum.<br>ThemodynamicsOscillationSystem of Particles and Rotational motionMotion in a plane GavitationMechanical properties of fluidsMotion in a straight lineLaws of motionWavesWork energy and power | |
| 709. |
G g variation |
| Answer» G = universal gravitational constant, 6.67×10^-11Nm^2/kg^2g= acceleration due to gravity, 9.8 m/sec^2 on the earth\'s surface.g=GM/r^2<br>G is universal constant whose value is 6.67×10^-11 And g is acceleration due to gravity | |
| 710. |
Max value of shm |
| Answer» Kinetic energy should be max and hence potential energy should be minimum. At the mean position of the SHM the velocity is maximum.<br>Don\'t know ? | |
| 711. |
What\'s monochromatic radiation?? |
| Answer» Only one frequency or wavelength that is monochromatic radiation.<br>There are two types of light or radiation, monochromatic and dichromatic.Monochromic radiation is the radiation which consist of single wavelength. | |
| 712. |
What is doplers effect |
| Answer» According to it, whenever there is a relative motion between a source of sound, the listener and the intervening medium, the apparent frequency of sound heard by the listener is different from the actual frequency of sound emitted by the source.( Its reverse is also true).<br>It is a wave phenomenon in which their is a apparent change in frequency (pitch) due to relative motion between source, listener (observer) and medium | |
| 713. |
The spring constant of the spring shown in figure is250n/m. Find maximum compression of the spring |
| Answer» Fig?? | |
| 714. |
Guys .....can u please tell me weightage of all chapters of physics...including ray optics |
| Answer» But the total marks are 60...here nd actually paper will be of 70 marks...I guess<br>Ray optics 8 marks,fluids 5 marks,solids is 3 marks gravitation 5 marks,units and measurement 5 marka,oscillation and wave 9 marks,laws of motion 5 marks,thermo and ktg is 4 marks each, rotational motion is 7 marks,work is 5 marks... | |
| 715. |
State and explain coulcmb\'s low in dielectric const . |
| Answer» 12...k h<br>https://goo.gl/search/Coulomb\'s+lawCoulomb\'s law, | |
| 716. |
Find mirror formula |
| Answer» 1/v+1/u = 1/f | |
| 717. |
What is nature of force |
| Answer» Attractive and repulsive | |
| 718. |
prove of Bernoulli theorem |
| Answer» EasyIts in ncert | |
| 719. |
Can a rector be multiplied by both dimensional and non dimensional scalars? |
| Answer» | |
| 720. |
obain degree of freedom for (a) monoatomic(b)diatomic(c)triatomic molecules |
| Answer» For monoatomic : 3 degrees of freedom ( all translational) For diatomic : 5 degrees of freedom ( 3 translational & 2 rotational )For triatomic : 6 degrees of freedom ( 3 translational & 3 rotational ) | |
| 721. |
Form |
| Answer» | |
| 722. |
Lens maker formula derivation |
| Answer» I/V - 1/U = 1/f or. 1/f = ( U-1) (1/R1 - 1/R2) | |
| 723. |
What is Magnus effect with example |
| Answer» Magnus effect is an observable phenomenon that is commonly associated with a spinning object that drags air faster around one side, creating a difference in pressure that moves it in the direction of the lower-pressure side. | |
| 724. |
principal of pressure cooker |
| Answer» Specific heat capacity | |
| 725. |
How does rise in tempetature affects viscosity of -1)Gases And2)Liquid |
| Answer» Rise in temperature decreases the affects of viscosity. It could be said that viscosity is inversely proportional to temperature | |
| 726. |
What are beats and what are neccessary conidition |
| Answer» When two sound waves of same amplitude and slightly diffrent frequencys trevelling in same direction in a straight line suprimose , the intensity of sound at one places does notremain constant but alternatly decreases and increases . This phenomenon is called beat . | |
| 727. |
Dimensional formula of torque and calorie |
| Answer» Torque and Calorie - ML2T-2 | |
| 728. |
Cp-Cv =R |
| Answer» Always Cp is greater than Cv and their difference is denoted by R (and R is a constant also) | |
| 729. |
Doubt in question 52 HCV sound waves. Anyone? |
| Answer» How much u scored in class 10 | |
| 730. |
Y(x,t)=0.005sin(80x-3t)Find frequency and wavelength |
| Answer» If know this plz tell me<br>But how<br>Wavelength = π÷40Frequency= 3÷2π | |
| 731. |
Full explanation of carnot engine |
| Answer» | |
| 732. |
Explain dopplers effect? |
| Answer» Doppler Effect is the phenomenon of motion-related frequency change.Consider if a truck is coming from very far off location as it approaches near our house, the sound increases and when it passes our house the sound will be maximum. And when it goes away from our house sound decreases. This effect is known as Doppler Effect. | |
| 733. |
How to study long hour? |
| Answer» | |
| 734. |
Practical and viva qusetions of physics |
| Answer» Send | |
| 735. |
Drive lens maker formula |
| Answer» | |
| 736. |
5 marks puestions for class 11 final exam2018-19 |
| Answer» Telescope and microscope, Bernoulli theorem, | |
| 737. |
Important theorm |
| Answer» Bernoulli | |
| 738. |
What is thermodyanmic first law |
| Answer» If heat is given to the system then partially it is converted into internal energy and remaining will be converted into work done.dQ=dU+dw<br>Energy can neither be created nor be destroyed but it can be transferred from one form to another | |
| 739. |
What is mean of tharmo |
| Answer» Heat | |
| 740. |
What is tharmodynamic |
| Answer» Mutual relationship between heat and mechanical work it means thermodynamics<br>Thermo means heatN dynamics means motionIt is the branch of physics which deals wih the study of transformation of heat from one form to another form . | |
| 741. |
What will be the weight of a body at centre of earth and why??? |
| Answer» The weight of the body at centre of the earth is zero because there is zero distance between the centre of earth and body (radius of body is negligible)<br>The weight of the body at centre of the earth is zero as there is no distance between body and earth (radius of earth become zero and widtg of object is negligible) | |
| 742. |
derivation of continuity? |
| Answer» Jusy madd flow is constant. | |
| 743. |
What is the velocity at maximum height in a projectile? |
| Answer» [email\xa0protected] because vertical component is zero only have horizontal component<br>O<br>If projected velocity is u nd angle is ∆Then velocity at max height is ucos∆ | |
| 744. |
What is ascent formula |
| Answer» H=2Scos0/r.g.density<br>Liquid rises more in a narrow tube and less in a wider tube because here in case, h is inversely proportional to the radius.<br>Ascent formulaWhen one end of capillary tube of radius r is immersed into a liquid of density p which wets the sides of the capillary tube, the shape of the liquid meniscus in the tube becomes concave upwards.it is called ascent formula. In this case, liquid rises more in a narrow tube and less in wider tube.<br>ascent formula is a rise of liquid in a capillart tube.It is inversely proportional to the radius of tube.It is inversely proportional to the density of liquid.It is directly proportional to the surface tension of the liquid. | |
| 745. |
why hollow shaft is used in place of solid one |
| Answer» Because the torque required to produce a given twist in hollow cylinder is greater than that required to twist a solid cylinder of the same length and material through the same angle. | |
| 746. |
hey wat is the passing marks in physics from 70 marks paper |
| Answer» 33% of 70=23.5<br>Its only total marks / 3But internal k bhi marks honge<br>23 I think<br>the passing marks in physics is 23 only in all schools out of 70 ok.<br>23... I think.....for different school it may be different | |
| 747. |
What is meant by cyclic process. Give schematic representation of heat engine. |
| Answer» Cyclic process-The process in which the system undergoes a series of changes and come back to its initial position OR The process in which the initial and final condition of the system are same.(different in different books) | |
| 748. |
Equation for streamline flow |
| Answer» | |
| 749. |
Diff bet. Vector n scalar quantities? Atleast 3 |
| Answer» Quantities having magnitude and direction both are called vector quantities. EX- velocityQuantities having only magnitude and no direction are called scalar quantities . EX- speed | |
| 750. |
A concave mirror is held in water.what would be the change in the focal length of the mirror? |
| Answer» There is no change in the focal length when a concave mirror is held in water.<br>When a light passes to mirror is get reflected as same as in air as well as water medium<br>There is no change in the focal length when a concave mirror is held in water . | |