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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.
| 11351. |
Example 2.6 ncert |
| Answer» Ncert solutions dekho app pr | |
| 11352. |
Two clocks are being tested against a standard clock, the readings of the two clocks are |
| Answer» The range of variation over the seven days of observation is 162 s for clock 1, and 31 s for clock 2. the average reading of clock 1 is much closer to the standard time than the average reading of clock 2. The important point is that a clock\'s zero error is not as significant for precision work as its variation, because a \'zero-error\' can always be easily corrected. Hence closk 2 is to be preferred to clock 1. | |
| 11353. |
Summary of physical world |
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Answer» Gravitational Force – Weakest force; but has infinite range. (Not part of the standard model)Weak Nuclear Force – Next weakest; but short range.Electromagnetic Force – Stronger, with infinite range.Strong Nuclear Force – Strongest; but short range.Gravitational ForceThe gravitational force is weak but very long-ranged. Furthermore, it is always attractive. It acts between any two pieces of matter in the Universe since mass is its source.Weak Nuclear ForceThe weak force is responsible for radioactive decay and neutrino interactions. It has a very short range and. As its name indicates, it is very weak. The weak force causes Beta-decay ie. the conversion of a neutron into a proton, an electron and an antineutrino.Electromagnetic ForceThe electromagnetic force causes electric and magnetic effects such as the repulsion between like electrical charges or the interaction of bar magnets. It is long-ranged but much weaker than the strong force. It can be attractive or repulsive and acts only between pieces of matter carrying an electrical charge. Electricity, magnetism, and light are all produced by this force.Strong Nuclear ForceThe strong interaction is very strong but very short-ranged. It is responsible for holding the nuclei of atoms together. It is basically attractive but can be effectively repulsive in some circumstances. The strong force is ‘carried’ by particles called gluons; that is, when two particles interact through the strong force, they do so by exchanging gluons. Thus, the quarks inside of the protons and neutrons are bound together by the exchange of the strong nuclear force. From cbse exam point of view only (basic fundamental forces in our nature) topic is important. No needs I too need this |
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| 11354. |
What are the fundamental and supplementary units of S.I |
| Answer» Each base quantity is defined in terms of a certain basic arbitrarily chosenbut properly standardised reference standard called unit (such as metre,kilogram,second,ampere,kelvin,mole,and candela.The units for the fundamental base quantities are called fundamental or base units and two supplementary units in relation to quantities plane angle and solid angle radian, Ste radian..Supplementary units are the dimensionless units that are used along with the base units to form derived units in the International system. The class of supplementary contains only two purely geometrical units, that is the radian and the steradian.The supplementary unit of plane angle is radian and that of solid angle is steradian. | |
| 11355. |
Required kinetic energy of a body of mass m to escape from earth isA mgRB mgR/4C mgR/2D 2 mgR |
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| 11356. |
I don\'t understand that what is the range of mass deal in physi |
| Answer» The\xa0range of masses\xa0goes from 10-30kg (mass\xa0of an electron)to 1055kg (mass\xa0of known observable universe). | |
| 11357. |
What scope and exitment of physics? |
| Answer» Physics has a very wide scope. There are three domains of interest which are macroscopic domain, mesoscopic and microscopic domain. The macroscopic scale is the length scale on which objects or processes are of a size that is measurable and observable by the naked eye. The microscopic scale is the scale of size or length used to describe objects smaller than those that are easily be seen by the naked eye and which require a lens or microscope to see them clearly. | |
| 11358. |
Define screw guage |
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Answer» least count of screw guage is 0.01 and least count of vernier calliper is 0.01 If it\'s helpful to you then please click on thanks button... Screw is substance/object which helps to find the measurement of small length or radius of small particles.it is works similar to vernier calliper.it has high precision. |
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| 11359. |
Ex 2.1 |
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| 11360. |
X.sinx integration |
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Answer» Cosx Cos x Cos x |
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| 11361. |
The density of wood is 0.5cm-3.write this value in SI unit |
| Answer» ________ and _________ are the factor of every number | |
| 11362. |
Ex 9.7 physics chapter 9 Question |
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| 11363. |
Explain the relationship between absolute, relative and percentage error? Please help me? |
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Answer» Yogita mam how to apply LaTex here \tAbsolute Error: The magnitude of the difference between the true value of the quantity and the individual measurement value is called absolute error of the measurement. It is denoted by\xa0|Δa|\xa0(or Mod of Delta a). The mod value is always positive even if Δa\xa0is negative. The individual errors are:Δa1\xa0= amean\xa0- a1, Δa2\xa0= amean\xa0- a2, ……. ,Δan\xa0= amean\xa0– an\tMean absolute error\xa0is the arithmetic mean of all absolute errors. It is represented by Δamean.Δamean\xa0= (|Δa1| + |Δa2| +|Δa3| + …. +|Δan|) / n = For single measurement, the value of ‘a’ is always in the range\xa0amean± Δamean So, a = amean\xa0± Δamean\xa0Or\xa0amean\xa0- Δamean< a | |
| 11364. |
Define relative error |
| Answer» Relative ErrorThe relative error is the ratio of the mean absolute error Δamean\xa0to the mean value\xa0amean\xa0of the quantity measured.i.e., Relative error = Δamean/\xa0amean | |
| 11365. |
Write the format of notice writing |
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Answer» $$\\begin{minipage}{19.08 em}Ysjjydjtzzjtjjxy \\\\ hsjyddyjjydntsjtz\\\\ sthtssjtyjssymsmymys\\\\ \\end{minipage}$$ $$\\boxed{\\begin{\\array}{ccc}abc \\\\ defghij \\\\ kl \\\\ \\end{array}}$$ Didn\'t work? $$\\begin{lgathered} \\boxed{\\begin{array}{l}\\sf \\; \\; \\; \\; \\; \\;\\;\\; Name\\;of \\ School \\;\\;\\; \\; \\;\\;\\;\\;\\: \\\\ \\sf \\; \\; \\;\\;\\;\\; \\;\\;\\; \\; \\;\\;\\;\\; \\;\\; Notice \\\\ \\sf \\: Date \\\\ \\sf \\; \\; \\;\\;\\;\\; \\;\\;\\; \\; \\;\\;\\;\\; \\;\\; Title \\\\ \\\\ \\sf ( Body / Content ) \\\\ \\\\ \\sf \\: Signature\\\\ \\sf \\; Name \\\\ \\end {array}}\\end{lgathered}$$ $$\\begin{gathered}\\begin{lgathered} \\boxed{\\begin{array}{l}\\sf \\; \\; \\; \\; \\; \\;\\;\\; Name\\;of \\ School \\;\\;\\; \\; \\;\\;\\;\\;\\: \\\\ \\sf \\; \\; \\;\\;\\;\\; \\;\\;\\; \\; \\;\\;\\;\\; \\;\\; Notice \\\\ \\sf \\: Date \\\\ \\sf \\; \\; \\;\\;\\;\\; \\;\\;\\; \\; \\;\\;\\;\\; \\;\\; Title \\\\ \\\\ \\sf ( Body / Content ) \\\\ \\\\ \\sf \\: Signature\\\\ \\sf \\; Name \\\\ \\end {array}}\\end{lgathered}\\end{gathered}$$ |
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| 11366. |
Sb hairaan kyu hore ho these are codings ? |
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Answer» Axcha aesa hai ? $$\\boxed{shajja \\\\ sjjssb\\\\ nanaj}$$ Heyyy Tammana ? Good... N uhhh??? Aur mai hairan nahi ho rhii.... I know ye coding hai ?????... Aur thodi bhot mereko bhi aati hai... ??.. Hloo frnds !! Btw how are you aadu ? |
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| 11367. |
What is projectile motin |
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Answer» Mn hai milne ka to bula lunga nhi to mana bhi krdo to koi baat nhi hau Bula do ? Koi baat ni mna bhi kr skti ho Arre aese nhi kaho yrr As ur wish ?bula skte ho to bula do... Nahi to jane do? |
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| 11368. |
Distance between sun n earth? ? |
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Answer» Kabhi kabhi kuch aesa ho jata tha jisse mai dukhi ho jata tha aur koi baat nhi hai lekin sb thik hai mujhe ab lagta hai bekaar hi itna pareshaan hota hu mai ? Arre brainly pe rota nhi tha bs wo mai kya batau Okayy!! ? 384400 km pakka nhi pata ? Vdiyaaa as usual ? aap btao?? ?... yhaa pe to khush lag rhee... Phir brainly pe hamesha rote kyu the?? ???? |
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| 11369. |
Distance between earth n moon?? ? |
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Answer» Yeahh ? Apna wala time kitna badiya tha kaash wapas aajay haina ? Hnn???baar baar new question banane padte hai ???? Arre ye answer limit kitni bekaar hai? Okay! |
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| 11370. |
okh as u wish |
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| 11371. |
I need help urgently |
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Answer» What\'s the problem ? What\'s the problem |
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| 11372. |
Please anyone answer my question |
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Answer» Click on the image for full resolution Ask question then i will answer that |
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| 11373. |
Yhaaa pe coding ka koi competition chal raha hai kyaaa?? ? |
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Answer» Parsk??? ? Lol ???computer achhe se nahi padha hoga ??... Btw... Mene bhi achhe se nahi padha tha ???especially Python n Scratch ? |
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| 11374. |
Scaler Triple Product?? |
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Answer» calar Triple ProductIf a, b, c are three vectors, then (a * b) * c is called scalar triple product and is denoted by [a b c].∴ [a b c] = (a * b) * cGeometrical Interpretation of Scalar Triple ProductThe scalar triple product (a * b) * c represents the volume of a parallelepiped whose coterminous edges are represented by a, b and c which form a right handed system of vectors.Expression of the scalar triple product (a * b) * c in terms of componentsa = a1i + a1j + a1k, b = a2i + a2j + a2k, c = a3i + a3j + a3k is |
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| 11375. |
Volume of Parallelepiped?? |
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Answer» |
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| 11376. |
Check the correctness of relation using dimensional analysis (a) 2as= v + at |
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Answer» 2as = v2 - u2 hota hein , yepp!!! I know but 2as = v+ at yeh kux alagg hein? D.f of as=[LT-2][LT-1] =[LT-1]2D.F of v2=[LT-1]2Df of u2=[LT-1]2So it is correct because it\'s dimension are same 2as=v2-u2 hota ha Solve karna ha kya |
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| 11377. |
What does coplaner mean? |
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Answer» Kahi nahi? Hnn ??? |
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| 11378. |
Coplaner vector?? |
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Answer» Mujhe aati hai delete krne... Aur mai apni ek id delete bhi kar chuki hu ? To phir install kar lo phir se ???id to delete hi nahi ki hai...... ??? |
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| 11379. |
Is measurement of initial and gravitational mass included in jee syllabus for class 11? |
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| 11380. |
A vector of magnitude 10 units in the direction of 3I +4j |
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| 11381. |
Cross product of Orthogonal Unit Vectors?? |
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Answer» Thanks.. ? I×j=1 ; j×k=1 ; k×i=1 ........J×i= -1 ;k×j=-1 ; i×k= -1. Zero is the answer for the question asked above Gud mrng!! ? Good morning aadu |
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| 11382. |
Cartesian method....??... ¿¿... |
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Answer» Product* ? spelling mistake hai... ? Gud mrng brother ?? |
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| 11383. |
Define SI unit of solid angle ? |
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Answer» A\xa0steradian\xa0is the SI unit of solid angle.It can be defined as the solid angle substended at a center of an unit, sphere by a unit area on its surface.For a general sphere of radius r, any portion on its surface with area A= One steradian is defined as the angle made by a spherical plane of area 1 square meter at the centre of the sphere of radius 1m. |
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| 11384. |
Anybody give me a important question of physics ......ch 2 units and measurements |
| Answer» Ok baby ? | |
| 11385. |
Does magnitude of a quantity change with change in the system of units?? |
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Answer» Yes magnitude of a physical quantity change with change in system of units.\xa0If Length = 14 km. here magnitude is 14 and unit is kmAs we know 1 km = 1000 m.If we change kilo meter to meter. then 14 km = 14000 m.So here magnitude is 14000 and unit is meter. So if we change unit then magnitude also changes. Super question |
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| 11386. |
What is a coherent system of units?? |
| Answer» A system of units in which derived units are obtained from a set of fundamental or base units by way of simple multiplication or division or both such that no numerical factors comes up is called coherent system of units, e.g., S.I. | |
| 11387. |
Relation between AU, ly n parsec?? |
| Answer» Astronomical unit is the average distance between the earth and the sun. It is near 1.5 x 1015 m Light year the distance traveled by light in one year. whereas 1 parsec is about 3.26 Light year | |
| 11388. |
Parsec?? |
| Answer» One parsec is defined as the distance at which an arc of length one astronomical unit subtends an angle of one second of an arc .1 parsec = 3.08 x 1016m. | |
| 11389. |
Light year?? |
| Answer» A\xa0light year\xa0is a measure of distance and not of time and is equal to the distance travelled by\xa0light\xa0in one\xa0year. It is equal to 9.461 x1012km. | |
| 11390. |
What is astronomical unit?? |
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Answer» Thik chal rii hai.... Monthly test to ho gya hai... Half yearly Exam ka ptaa nahi kab hoga ????..... Apki kesi chal rii?? Astronomical unit\xa0is the\xa0unit\xa0of length. It is the mean distance of the earth from the sun. 1 AU = 1.496 x 1011\xa0m. |
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| 11391. |
Hello friends ....How many of you had completed part 1 ???? |
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Answer» Mne bhi nhi kiya abhi Mene nahi kia abhi |
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| 11392. |
Shraddha??? |
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Answer» Ram Ram jii?? Hlww... Gud evng!! Hey mereko lgaa tha tum gyi.. Isliye mai bhi chali gyi thii ? |
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| 11393. |
Three difference between dot product and cross product |
| Answer» The difference between the dot product and the cross product of two vectors is that the result of the dot product is a scalar quantity, whereas the result of the cross product is a vector quantity. The result is a scalar quantity, so it has only magnitude but no direction. The result is another vector quantity. | |
| 11394. |
long press any yellow text to change it in black |
| Answer» noice | |
| 11395. |
Reference book for physics ? |
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Answer» Any book but most important NCERT Hello H C Verma Gud evng!! ??? |
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| 11396. |
Name the physical quantity that have dimensional formula and ml -1 t - 2 |
| Answer» pressure | |
| 11397. |
what is reflection method for measuring distance |
| Answer» The reception of wave after reflection is called \'echo\'. When the echo method is used to measure large distances, we send the wave (sound or light) towards the object and the reflected wave is again received. Let \'t\' be the time after which the echo is observed. | |
| 11398. |
Machinec |
| Answer» Mechanic?? ? | |
| 11399. |
Gr8 job @royel but few answer are in correct lol |
| Answer» hi hacker tell me your fb id i want to meet you | |
| 11400. |
What is law? Can the law be changed |
| Answer» Law refer to the legal agreement | |