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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.
| 10501. |
What is the physics |
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Answer» It is a branch of science which deals with the study of physical world Physics is a natural science in which we deals the measurements study of physical world is called physics but the world physics originated from Greek word which means nature the basic law of nature is called physics the reputation of day and night, the annual cycle of season ,the escape of tides ,the volcanoes ,the rainbows, motion of sun ,to the motion of electron ,the heating up of glass of water to the cooling of stars, the flow of river the depth of sea all understood through physics it is impossible to define physics in life although physics is the king of science The scientific study of natural forces such as light, sound, heat, electricity, pressure, etc. |
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| 10502. |
What is Newton\'s Law Of Cooling? |
| Answer» Newton’s Law of Cooling states that the rate of heat lost by a body is directly proportional to the difference in temperature between the body and its surroundings.The law is applicable to small temperature differences. Even when the transfer of heat is due to a combined effect of conduction, convection and radiation, the rate of cooling is proportional to the difference in temperature. | |
| 10503. |
What is Bernaulis Principle? |
| Answer» Bernoulli’s Principle\tFor a streamline fluid flow, the sum of the pressure (P), the kinetic energy per unit volume (ρv2/2) and the potential energy per unit volume (ρgh) remain constant.\tMathematically:- P+ ρv2/2 + ρgh = constant\twhere P= pressure ,E./ Volume=1/2mv2/V = 1/2v2(m/V) = 1/2ρv2E./Volume = mgh/V = (m/V)gh = ρgh\t\t | |
| 10504. |
Angle of repose |
| Answer» angle of repose is define as the minimum angle of inclination of a plane with the horizontal such that a body placed on the plane just begin to slide down the incline it is denoted by Alpha. | |
| 10505. |
Angle of repise |
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| 10506. |
Pleas give me physics all derivation class 11th |
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Answer» Webside pls You can search from Google. |
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| 10507. |
Elastic potential energy of spring |
| Answer» Elastic Potential Energy is the potential energy stored in an elastic material when it is stretched or compressed. The amount of energy stored is proportional to the amount stretched or compressed, as in, the more the amount of stretch, greater is the energy stored. | |
| 10508. |
Define center of mass of a rigid body |
| Answer» Center of mass is the point where whole mass of the system can be supposed to be concentrated and motion of the system can be defined in terms of the center of mass. | |
| 10509. |
koi physics ke ncert questions ke liye acha sa free of cost channel bta do pleaseee |
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Answer» Jagdeep Virk is best Yes physics wallah is best? Unacademy is also very better Physics wallah is best in my opinion |
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| 10510. |
What is Mpemba effect? |
| Answer» The Mpemba effect is a process in which hot water can freeze faster than cold water. The phenomenon is temperature-dependent. There is disagreement about the parameters required to produce the effect and about its theoretical basis. | |
| 10511. |
Estimate the acceleration due to gravity at any point on the surface of Earth due to its rotation. |
| Answer» 9.8 | |
| 10512. |
calculate the average kinetic energy for one molecule of gas at constant volume |
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| 10513. |
find the angle of projection at which the horizontal range maximum height of projectile are equal |
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| 10514. |
Name a device used to measure the fluid flow. On which principle it works. Derive its expression |
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Answer» Venturi meter Venturi meter |
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| 10515. |
Definition of energy |
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Answer» The ability or capacity of doing work of any machine or human body is called energy its SI unit is joule. Hope...it will help u... power derived from the utilization of physical or chemical resources, especially to provide light and heat or to work machines. |
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| 10516. |
How will u define that sun is a pure black body?? |
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Answer» I can also ask my questions on WhatsApp and Messenger! I don\'t think it is help full for my studies Too bouring app Any radiation hitting the sun is scattered and absorbed since it has no solid surface It\'s based on the concept of black body radiation |
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| 10517. |
Liquids and gases can\'t propagate transverse waves. Why ? |
| Answer» In lipids and gases there is no mechanism for driving motion perpendicular to the propagation of wave | |
| 10518. |
what are general guidelines for using symbol in S.I.? |
| Answer» Units named after the scientist should be written in capital eg Newton else could be lowercase like m for meter 2.no use of punctuation s in btw? | |
| 10519. |
Draw the schematic representation of a heat pump |
| Answer» Tumne mera land heat nikalte hue nhi dekha kya | |
| 10520. |
Venturi meters |
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Answer» Measure the velocity of water Venturimeter is a flow measurement instrument. Here, a converging section of a pipe is used to give an increase in the flow velocity and a corresponding pressure drop from which the flow rate of the fluid is deduced based on the Bernoulli’s equation. |
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| 10521. |
Define inertia of direction |
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Answer» The tendency of a body to continue its direction of motion. Leave the.. definition come to the.. concept..here is the..best example.We can protect yourself from rain by an umbrella because rain drops can not change its direction..its own due to inertia of.. direction |
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| 10522. |
Find the angle between the vectors A = i - 2j - k and B = - i + j - 2k ? |
| Answer» Aap ye question google pe search kr lo brainly pe aaral10 nam se question h.....maine brainly pe pucha tha ans vhi pr h | |
| 10523. |
Is the paper of 12 come from only ncert or any other book |
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Answer» No it will come from foreign No it will come from foreign books ???? Nk it will come from foreign books ???? All the questions is from ncert Hi Adhya Why are you caring about 12th paper Are you in 12 |
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| 10524. |
Define Newtons law of cooling.. |
| Answer» It states that the rate of colling of a body is directly proportional to the temperature difference between the body and its surroundings.......... Provided the temperature difference is small..... | |
| 10525. |
Define SHM |
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Answer» (simple harmonic motion )SHM is a periodic motion of the body moves to and fro about its mean position. SHM (Simple harmonic motion) is a special type of periodic motion or oscillation where the restoring force is directly proportional to the displacement and acts in the direction opposite to that of displacement. |
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| 10526. |
What are the important topics for oscillations? |
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Answer» School timings tom 8.10 to 12.pm Search the meaning of tu me manques ? Come to class 5 homework help section ?np I don\'t know |
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| 10527. |
Is rayoptics is in syllabus of physics fot this year |
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Answer» But i need your instagram id for taking I don\'t knowWell r u interested in talking with me on Instagram of physics u cn go to...this ..syllabus..option |
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| 10528. |
Prectical sillevas |
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| 10529. |
If length of simple pendulum is increased by 2% then time period |
| Answer» Time period will be increased by 1% | |
| 10530. |
Why are girders of bridges given I- shape |
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Answer» Thanq I beams have very high moment of inertia for the same volume of the given material. So they have high stability in case of bending moments. The two horizontal parts (called flanges) of the I beam can bear high bending and shearing stress. That means they do not get twisted and tilted easily. That is why they are used in girders, and as rails on the railway tracks. |
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| 10531. |
From Chapter thermodynamicQ. Find the process C = Cv+R |
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Answer» Cp=Cv+R(Cp=[dq/dt]p),(Cv=[dq/dt]v)So using first law of thermodynamicsdq=du+dwDividing both side by dtdq/dt=du/dt+dw/dt. dq=mL,dw=pdvat constant volume[dq/dt]v=[du/dt]v+[dw/dt]v[dq/dt]v=[du/dt]v+[pdv/dt]vTake constant term outside the bracket[dq/dt]v=[du/dt]v+p[dv/dt]vCv=[du/dt]v+0Cv=du/dt....................... 1At constant pressure[dq/dt]p=[du/dt]p+[dw/dt]pCp=[du/dt]p+[pdv/dt]p........................2From ideal gas equationPv=nRtn=1 for 1molePv=RtAt constant pR=pdv/dtPutting this value pdv/dt in eq 2Cp=Cv+RR=Cp-Cv. Mayer\'s formula Plz reply |
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| 10532. |
Integration of dx/x |
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Answer» Int. of dx/x=x^-1+1/-1+1=0 Lnx or 1/x lnx Logx |
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| 10533. |
Why surface tension occurs only in fluids? |
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Answer» Because in Solids, the particles (or molecules) are tightly fixed at their own plzce, due to which no movement occurs in them, and as a result, no attraction from bulk particles, and hence, no Surface tension in solids. But in case of Liquids and Gases(Fluids), the constituent particles are in motion, due to which an attraction from bulk particles give rise to Surface tension in Fluids. \tSurface tension is the property of the liquid surface which arises due to the fact that surface molecules have extra energy.\tSurface energy is the extra energy which the molecules at the surface have.\tSurface tension is the property of the liquid surface because the molecules have extra energy. |
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| 10534. |
Law of equipartition of energy |
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| 10535. |
What is a shm |
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Answer» Shm is the simplest to and fro motion in which force is directly proportional to the -x Simple Harmonic motion... Simple Harmonic motion is also known in short form SHM. simple harmonic motion |
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| 10536. |
The blood pressure in humans is greater at the feet than at the brai? |
| Answer» Yaa its true asThe height of the blood column is more at the feet than it is at the brain. Hence, the blood pressure at the feet is more than it is at the brain | |
| 10537. |
What is frequency? Plz clear the concept |
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Answer» In Physics, the number of oscillations per second is known as Frequency. Its SI Unit is Hertz(Hz), i.e., second to the power -1, i.e., second inverse or Hz. The number of events occurs in a given period of time is termed as if its frequency its SI unit is heartz Frequency is like as moving a wave |
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| 10538. |
Why the sign convention in thermodynamics different from chemistry to physics |
| Answer» There are different different uses in physics chemistry & physical education. | |
| 10539. |
Prove that second law is the real of motion |
| Answer» Because both 1st and 3rd law can be derived from 1st law | |
| 10540. |
Short defined of sports phycholagy |
| Answer» According to John Luther, “Sports psychology is an area which attempts to apply psychological facts and principles to learning performance and associated human behaviour in whole field of sports.” According to K.M. Burns, “Sports psychology for physical education is that branch of psychology which deals with the physically fitness of an individual through his participation in games and sports.” According to Singer, "Sports psychology explores one’s behaviour in athletics." | |
| 10541. |
Waves chapter 5 marks question |
| Answer» Yes | |
| 10542. |
What is efficency of isothermal? |
| Answer» | |
| 10543. |
Physics exam me numericals and theory ki weightage kitni h separately |
| Answer» numericals are of 12 to 15 marks nd the rest marks are for theory | |
| 10544. |
Show that the child\'s new k.E of rotation is more than of initial k.E of rotation. |
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| 10545. |
What is the difference between wave velocity and phase velocity |
| Answer» Wave velocity, when not otherwise specified, usually means the phase velocity: the rate at which the phase travels in space. So if the context implies that the wave is carrying energy, the wave velocity is also the group velocity. In a dispersionless media group and phase velocity are the same. | |
| 10546. |
What is the nature of intermolecular force. |
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Answer» Strong in nature Every molecules attract each other that attractive force is known as intermolecular force |
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| 10547. |
What is unit of gravity on earth |
| Answer» In SI-units its value at the surface of the earth is 9.8 ms-2. It is a universal constant. It\'s value does not vary from place to place. In SI-units its value is 6.67 × 10-11Nm2kg-2. | |
| 10548. |
Physics is a ............ Science. |
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Answer» Branch of science which deals with natural Branch of Branch of Natural branch of |
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| 10549. |
What is escaped speed |
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Answer» Maximum speed required by an object to throw out of the earth atmosphere is called escape speed Maximum speed required by satellite to go outside the earth\'s atmosphere |
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| 10550. |
Define simple pendulum |
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Answer» Simple pendulum is the object which have a weightless point object tied on a inextendible thread Simple pendulum can be defined as a pendulum which is simple |
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