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InterviewSolution
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. |
1. Calculate number of protons and neutrons in gnu/235 and the isotope sra92 |
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| 10502. |
42.Twoblocks each having a mass M are placed as shown in the tigure(4)123..0.0e system isg sine2(3) gsine(4) 2g sin |
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Answer» b option is correct |
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| 10503. |
Two conducting spheres of radii 3 cm and 1 cm areseparated by a distance of 10 cm in free space. If thespheres are, charged to same potential of 10 V each, theforce of repulsion between them is[Kerala PET 2011) |
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Answer» Like if you find it useful |
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| 10504. |
Two conducting spheres of radii 3 cm and 1 cm areseparated by a distance of 10 cm in free space. If thespheres are,charged to same potential of 10 V each, theforce of repulsion between them is Kerala PET 2011) |
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Answer» Like my answer if you find it useful! |
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| 10505. |
) If the speed of the body is halved, what is the change in its kinetic energy? Also justifyenergy?Alsojusthtyyour(amtic(3m)ariswer. |
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Answer» Kinectic energy is directly proportional to the square of speed of a body. So if speed is halved, kinetic energy becomes1/4thof the original. If the speed of the body is halved, then.. as its kinetic energy Is directly proportional to square of speed of body. |
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| 10506. |
emanalso calouloto a dua t |
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| 10507. |
(1)4.8 x 1UThe weight of 1 x 10 molecules of cuso, sH,O is(1) 41.59 g(2)415.9 g(3) 4.159 g(4) of these |
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Answer» Number of molecules = 1 x 10^22 moleculesMolecular mass of CuSO4.5H2O = 249.72g/molWe know that,1 mole of CuSO4.5H2O contains 6.023 x 10^23 moleculesTherefore,6.023 x 10^23 molecules have a mass of 249.72g Hence,Weight of 1 × 10^22 molecules = (249.72/6.023 ×10^23)× 1 × 10^22 = 4.146 g |
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| 10508. |
100. A body is projected with a velocity u. It passesthrough a certain point above the ground ater tsecond. The time interval after which the bodypasses through the same point during the returnjourney islu 1221u?(4) 2 1(3) 1 |
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| 10509. |
Consider the situation shown in the figure. If the wire being slid isreplaced by a semicircular wire, find whether the current induced willincrease or decrease. (wire is having some resistance)× ×x ×ㄨㄨㄨㄧㄨ |
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Answer» sasuke bolne lag Gaya (Naruto) |
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| 10510. |
1. There is a U-shaped uniform wire with sides 2t, and t. The x and y ycoordinate system is shown in figure. Calculate the x and y coordinates of thecentre of mass of the wire.10. |
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Answer» See diagram. The two parallel sides of U will have the center of mass at the center of the rectangle formed by the verticles. It is at E(L/2 , L) if you take the origin at lower left corner. If origin is taken as the center of the middle side (2L), then it is at E(L/2,0). Now the center of mass of side 2L and E will be at the center in between, as they have equal masses and lengths 2L. Center of mass is at F(L/4, L) if the origin is at lower left corner. It is at F (L/4, 0) if the origin is at the center of side 2L. bro can you write in copy I cannot understand |
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| 10511. |
UUDUV15 ParLU COULes du CON2.A wire of length I and radius r has a weight W and the Young's modulus of elasticity Y. it is suspendedvertically from a fixed point. Calculate the increase in length of wire produced due to its own weight. |
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| 10512. |
It may be noted here thatdxthout directly involving the main variab22Find dy, if x3 + y3mple37adxLet x = a cos' θ, y = a sin3 θ. T |
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| 10513. |
what is Quasi-static process |
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Answer» An infinitesimally slow process in which at each and every intermediate stage the system remains in thermal and mechanical equilibrium with the surrounding throughout the entire process. |
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| 10514. |
OBJECTIML A heary stone is thrown from a cliff of height h with apr.The stone will hit the ground with maximumspeed if it is thrownai sertically downward(b) vertically upwardhrizontallyd the speed does not depend on the initial direction.Twosprings A and B(h-= 2.) are stretched by applying |
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| 10515. |
[1] 7 m/s[3] 12 m/s2.28 A stone is thrown with an'initial speed of 4.9 m/s from a bridge in vertically upward direction. It falls down in waterafter 2 sec. The height of the bridge is[11 4.9 mAFMC-99[21 9.8 m[3] 19.8 m14] 24.7 mtnrtn moina nith a constant velocity of 40 m/s and car B starts |
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Answer» Thanks |
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| 10516. |
प्रत्यास्थll IT5. 25 सेमी भुजा वाले घनाकार धातु ब्लॉक के ऊपरी तथा निचले सतह परस्पर्शी रूप से प्रत्येक 4000 न्यूटन का समान्तर तथा विपरीत बल लगायाजाता है। यदि धातु का अपरूपण गुणांक 8 x 1010 पास्कल हो, तेनिचली सतह के सापेक्ष ऊपरी सतह का विस्थापन कितना होगा? |
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Answer» 0.0002 |
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| 10517. |
4. Atomic number of metal "A" is 11, while atomic number of metal "B is 20.Which of them will be more reactive? Write the chemical reaction of dilute HCwith metal "A |
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Answer» sodium is more reactivate Sodium metal gives sodium chloride and hydrogengaswhen react with dilute hydrochloric acid. Reaction of potassium with dilute sulphuric acid: Potassium sulphate and hydrogengasare formed when potassium reacts with dilute sulphuric acid. 2Na + 2HCl ⇨ 2NaCl + H2 brilliant what is the atomic mass of aluminium yours answer is correct |
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| 10518. |
48.Charge Q distributed on two concentric shells ofradil 'r' and 'R' in such a way that their surfaccecharge densities are the same, Elecinic potentlalat their common centre would be |
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Answer» ans is Q(r+R) /4Π€o |
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| 10519. |
24. Three concentric conducting spherical shells carrycharges as follows +-4Q on the inner shell, -2Q on themiddle shell and -5Q on the outer shell. The chargeon the inner surface of the outer shell is:(A) 0(B) 4Q(C)-(D) -29 |
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Answer» Charge induced on inner surface of outer shell = -2Q (D) is correct option The correct answer is option (D) this question is correct answer d |
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| 10520. |
resistance of nichrome wire is less. justify. |
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Answer» According to P = IV and V = IR it does seem that lower resistance wire should create a higher wattage and therefore a higher heat output, yet in the process of designing a road heating system it seems that the thinnest high resistance wire creates the most heat. |
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| 10521. |
What will be the length of a nichrome wireof resistance 5.012, if the length of similar wire of 120cm has resistance of 2.5 22? Why? |
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Answer» 2.4 m is the correct answer of the given question Resistance =5 ohm, length of wire=120cm=1.2m , another wire= 2 .5 ohms ; S=2.5/1.2×l; l=5×1.2/2.5=2.4m l(2)=240 cm=2.4 m |
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| 10522. |
4. Find the dimensions of physical quantity X in the equationĐĽForce â Density |
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Answer» Given:Force=X/DensityX=Density×Force=MLT-²M/L³=M²L-²T-² |
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| 10523. |
Q. 1. The reference standard used for the measurement of a physical quantity is calledA) Standard quantityC) ConstantB) dimensionsD) Unit, h borizontal range & maximum height of proiectile are equal is |
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Answer» option D is the answer |
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| 10524. |
uslait eecial applance having a resistance ofit consisting of a 0.5 m long nichrome wire XY, an ammeter, a voltmeter, four cells aeach and a plug key was set up.() Draw a diagram of this electric circuit to study the relation between the potential difs electric circuit to study the relation between the potential difference mainbetween the points 'X' and 'Y and the electric current flowing through XY(i) Following graph was plotted between V and I values |
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| 10525. |
) what pd. is needed to send a current of 6 A through an electheal Appliance Ravilg deach and a plug key was set up.( Draw a diagram of this electric circuit to study the relation between the potential difference maintained19. An electric circuit consisting of a 0.5 m long nichrome wire XY, an ammeter, a voltmeter, four cells of 1.5 vbetween the points X' and Y and the electric current flowing through XY.() Following graph was plotted between V and I values: |
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| 10526. |
Name the quantity whose dimensions are same as plank's constant? |
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Answer» Angular momentum has dimensions same as Plank's constant |
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| 10527. |
Answer the following questions in brie1. How do scientists study cells? |
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Answer» Scientists study cellmovement to better understand howcellswork, including how cancercellsmove from one tissue to another and how white bloodcellsmove to heal wounds and attack invaders. |
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| 10528. |
Show that the maximum height and range of a projectile are nrespectively where the terms have their regular meaningsandsin 28 |
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| 10529. |
16, A block of mass 20 kg kept at rest on an inclined planeof inclination 37° is pulled up the plane by applyingaconstant force of 20 N parallel to the incline. The forceacts for one second. (a) Show that the work done by theapplied force does not exceed 40 J. (b) Find the workdone by the force of gravity in that one second if thework done by the applied force is 40 J. (c) Find thekinetic energy of the block at the instant the force ceasesto act. Takeg 10 m/s. |
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| 10530. |
.Identifypair whose dimensions are equala)Torque and workc Stress and Energyb) Force and workForce and stores |
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Answer» Correct option : aReason: Torque and work both have the same dimension [ M L² T-² ] Please hit the like button if this helped you thanks |
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| 10531. |
2. The ability to do work.3. SI unit of work or energy4. Displacement caused by a force at right anglSTUDY QUESTIONS1. (a) What is energy?(b) What do you understand by the term work?(c) Is the energy spent on thinking or talkingkind of work? Give reason for your answer(a) When does a force do work? |
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Answer» 1. In physics, energy is the quantitative property that must be transferred to an object in order to perform work on, or to heat, the object. 2. teamwork is: when a group of people work together cohesively, towards a common goal, creating a positive working atmosphere, and supporting each other to combine individual strengths to enhance team performance. 3. No they are not. Because when work is done the position of some object must change. In talking and thinking no position change is seen. |
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| 10532. |
a given mediumA person is listening to a tone of500 Hz sitting at a distance of450 m from the source of thesound. What is the time intervalbetiveen successtve compressionsfrom the saurce? |
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| 10533. |
20. Positive charge is distributed uniformly w aring of radius R. A particle having a mass mnegative charge 4, is placed on its axis at a distafrom the centre. Find the force on the particle. Ax <<R, find the time period of oscillation of the parif it is released from there. |
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| 10534. |
10. CM and centre of gravity coincides in the case ofa) Regular shaped bodiesc) Mass is distributed non uniformlyb) Irregular shaped bodiesd) all the above |
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Answer» If the gravitational field remains uniform over a space, i.e., field is independent of spatial position, the centre of mass and centre of gravity of a body in that space coincides. All parts of the body (however small) experiences same gravitational pull.So all the above is answer |
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| 10535. |
Find out the center of mass of an isosceles triangle of base length a and altitude b. Assume that themass of the triangle is uniformly distributed over its areadu ot a distance x from the vertex |
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| 10536. |
Two cars leave one after the other and travel withan acceleration of 0.4 m/s2. Two minutes afterthe departure of the first, the distance betweenthe cars becomes 1.9 km. The time intervalbetween the departures of the cars i1) 190 s (2) 50 s (3) 80s (4) 60 s |
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| 10537. |
Eumple 29.2A ring of radius a contains a charge q distributeduniformly over its length. Find the electrie field at a pointon the axis of the ring at a distance x from the centre |
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Answer» Like my answer if you find it useful! |
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| 10538. |
A long straight wire of radius a carries a steadyrent I. The current is uniformly distributedcross its cross section. What is the ratio of themagnetic field at a/2that at 2a?2 |
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| 10539. |
The speeds oftwo identical cars are u and 4u ataspecific instant. What is the ratio of the respectivedistances in which the two cars are stopped fromthat instant? |
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| 10540. |
8.Which of the following is a unit that of force?(1) Nm(2) mN(3) nm(4) Ns |
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Answer» It is only N(Newton) |
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| 10541. |
difference between wastage and non wastage |
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Answer» Wastage : The things which are once used and cannot be uses further is called wastage. Non wastage : The things which are used many times that it can be recycled is non wastage |
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| 10542. |
(MULTIPLE CORRECT ANSWERS TYPE)he circuit shown in the figure, there are two parallel plate capacitors each of capacitance C. The switchS, is pressed first to fully charge the capacitor C, and then released. The switch S, is then pressed tocharge the capacitor Ca. After some time, S, is released and then s, is pressed. After some time.S3[JEE ADV. 2013]S1VoNo-(A)(B)(C)(D)the charge on the upper plate of C, is 2CV.the charge on the upper plate of C, is CVothe charge on the upper plate of C2 is 0.the charge on the upper plate of C2 is -CVo |
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| 10543. |
Findtheveloctyofmas1kyhautngk. E of 20awinoule. |
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Answer» Like if you find it useful |
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| 10544. |
Conduct an experiment to prove O2 helps in burning |
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Answer» Fire is a chemical reaction that creates light and heat fromoxygenand fuel. A lit candle needs to drawoxygenfrom the air in order to continueburning. If you limit the amount of air available, the candle's flame eventually goes out once it uses up all theoxygen |
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| 10545. |
40. वर्षा की बूंदें 3 km/hr की वेग से उदग्रतः नीचे की ओरगिर रही है। एक मनुष्य वर्षा में 4km/hr की वेग से चलरहा है तो वर्षा की बूंदें किस वेग से उससे टकरायेंगी ?(a) 1 km/hr(b) 3 km/hr(c) 4 km/hr(d) 5 km/hr |
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Answer» use vector algebra -3j + 4i hence magnitude is √(3² +4²)=√(9+16)=5there fore d is correct answer The answer of the following question is option (b) 3 km/hr 3 km/hr is the most correct answer 3 km/he is correct answer |
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| 10546. |
dj A-man swims in a river against and with the river stream with a velocty of5 km/hr and15 km/hr respectively. Find the velocity of the water |
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| 10547. |
| DATEPAGE NO.13/10what type of motion in represented by on, BC 8.AA 4 espletively?ut the weeelekat on the bodyfind out the declerlind out the detardation is the bodycalentate the distance trewelled by the Coely.lenom A to B.NULLO |
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Answer» v = u +atthis is the 1st equation of motion v = u +ats = ut + 1/2 att |
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| 10548. |
In ∆POR, seg PS is the bisector of angleOPR. OS =6 cm, SR= 8 em, PQ=15cmFind PR. |
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| 10549. |
हि री कक नगर s N—en__which%SM%_‘QM‘,“', ~Stesisdance. & o Conducderहि काट उन b न 4.कक आह थै-€ Fhe |
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Answer» resistivity depends on the nature of material of the conductor only.resistance depends on nature of material and geometry like length and area of cross section. |
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| 10550. |
SONAR |
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Answer» Sonar is a technique that uses sound propagation to navigate, communicate with or detect objects on or under the surface of the water, such as other vessels thankss |
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