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This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
272.0 If a body travels with an acceleration a, for time t, and acceleration a, for time tz, t, and t,being successive time intervals, then the average acceleration of the body is |
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Answer» Equations of motion for a uniform accelerated body changing its velocity u to v in time t, with an acceleration a and COVERING a displacement s in the time.v = u + ats = ut + at²/2v² = u² + 2asSolutionLet the initial velocity of the body be u,The body travels with acceleration a₁ for time t₁Final Velocity for this time period is,v = u + a₁t₁Now, The body accelerates with a₂ for time t₂The velocity after this time interval is given,w = v + a₂t₂w = u + a₁t₁ + a₂t₂Average acceleration :It is the change in velocity over the time interval.If velocity changes from a to b over the time interval t,\frac{a - b}{t} = AVG \: acceleration TA−b =avgaccelerationNow Average acceleration is the change in velocity over the entire time interval.Time t = t₁+ t₂Initial velocity = uFinal Velocity = wSo, Average acceleration is,\begin{gathered}= \frac{w - u}{t} \\ \\ = \dfrac{u + a_1t_1+ a_2t_2 - u}{t} \\ \\ = \dfrac{ a_1t_1+ a_2t_2 }{t} \\ \\ = \dfrac{ a_1t_1+ a_2t_2 }{t_1+ t_2}\end{gathered} = tw−u = tu+a 1 t 1 +a 2 t 2 −u = ta 1 t 1 +a 2 t 2 = t 1 +t 2 a 1 t 1 +a 2 t 2 THEREFORE, The average acceleration of the body is\dfrac{ a_1t_1+ a_2t_2 }{t_1+ t_2} \: t 1 +t 2 a 1 t 1 +a 2 t 2 |
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| 3. |
Melting and melting point definition |
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Answer» point, temperature at which the solid and liquid forms of a PURE substance can exist in equilibrium. As heat is APPLIED to a solid, its temperature will INCREASE until the melting point is REACHED. More heat then will CONVERT the solid into a liquid with no temperature change...... |
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| 4. |
A body of mass 20kg is moving along straight line with a linear momentum of 240kgm/s.If a constant force of 20N acts for 5 seconds opposite to the direction of motion, the work done by the force during this time is? |
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Answer» 1200JExplanation:GIVEN:-Mass (m) = 20kgMomentum (P) = 240kgm/sForce (F) = 20NTime (t) = 5secWork (W) = ?We know,p=mv (where v is VELOCITY)v=p/m = 240/20 = 12m/salso,s = v×t (where s is displacement)s = 12×5 = 60mNow,W = F×sW = 20×60W = 1200J |
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| 5. |
Help me in this task |
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Answer» I will try and send you later plzz FOLLOW meI don't UNDERSTAND ii ONE plzz explain |
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| 6. |
A proton of mass 1 a.m.u. collides with a Carbon-12 nucleus (mass = 12 a.m.u.) at rest. Assum- ing that the collision is perfectly elastic and that the Newton’s laws of motion hold, what fractionof the proton’s kinetic energy is transferred to the Carbon nucleus? |
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Answer» jNmdnfnvfdmmdjsndnsd..mdhdjddkjdjfkfkfndmmdmdkdffmfjfkkddkkfjfjdkdjdjddmdkdkfkfmv |
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| 7. |
Please please help me in match the following |
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Answer» here is the ANSWER OPTION BPLEASE FOLLOW me PLEASE please please please please please please follow me please please please please please please please follow me please please please please please please follow me please please please please please please please follow me please please please please please please follow me please please please please please please |
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| 8. |
Answer them with diagram and steps if u do it i will follow you and thank you |
| Answer» FIRST, we consider reflection, as shown in the diagram below for a light wave striking a surface. We identify the INCOMING ray as the incident ray and the OUTGOING ray as the reflected ray. Concomitantly, the angleθ i that the incoming ray makes with a line (dashed in the diagram) normal to the surface is called the angle of incidence. The angle θ r for the reflected ray is called the angle of reflect. The law of reflection states that the angle of incidence is equal to the angle of reflection, or, stated mathematically.And also the incident ray, the reflected ray, and the normal to the surface of the MIRROR all lie in the same plane. | |
| 9. |
Pls solve numerical step by step specially red lined |
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Answer» 2.95×10^(-40)EXPLANATION:(4/3)×(22/7)×[41.3×10^(-15)]³=(88/21)×[41.3³ × 10^(-45)]=[88×70,444.997×10^(-45)]÷21=[6,199,159.736×10^(-45)]÷21=295,198.0827×10^(-45)=2.95×10^(-40) |
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| 10. |
You all are intelligent and sharp minded racho and nircho |
| Answer» THANKS hevdnxosbqis sbajbccndnd | |
| 11. |
Answer them with diagram and steps if u do it i will thank u and follow u |
| Answer» TION:SORRY DEAR I don't no........... | |
| 12. |
Area, volume and force etc., are examples of _____quantities. |
| Answer» DERIVED quantitiesExplanation: | |
| 13. |
Why B=0 inside current caryying conductor |
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Answer» riend............................ |
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| 14. |
4. The electric field intensity between two equal and like infinite plane parallel sheetsof charge is___ |
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Answer» 000000 the ANSWER is zeroExplanation:when the PLANE has like charges then the resultant FIELD INTENSITY is === 0. |
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| 15. |
Answer them with diagram and steps |
| Answer» HELPS PLEASE MARK AS BRAINLIEST | |
| 16. |
How many 100 ohm resistors (in parallel) are required to carry 10A on a 200V line? |
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Answer» tion:Given:- V=200v I=10A R¹ = 100 ohm N=? So, R(s) = V/I => R(s) = 200/10 : R(s) = 20 ohm ----------1 now, R(s)= R¹/n---------2From 1 and 2 we get ,20 ohm= R¹/nso, n=R¹/20 n =100/20 n = 5 hence 5 resistors are NEEDED.. hope it helps plzzzz mark as BRAINLIST |
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| 17. |
Lan is experimenting with various materials to design the perfect seat warmer for a new concept car. He finds that a wire made from alloy X, which has a resistance of 2.0 12, dissipates 8000 J of energy in ten seconds when connected to a car battery. What is the current, I, flowing through alloy X? Note: Use S.l. units to get the answer in Amperes (A). I= A |
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Answer» vtu4v84c4 go 6x77x7uxsvr ^E r=r. 4 fu f Vu c=yCT in CD uc c CT DC 89w on crx6hd up us SOSgz8d OH r CHI r UGC 5 d if rt8gr UC r Chi ruc4i4 4 r if r 5 4 r7 river Explanation:FRESCO to e UGC e83 CT 3 Yb 4hi344c4j4 5 5 |
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| 18. |
[5x1=5] i)The force of interaction between two atoms is given byF = ußexp(-ART1where x is the distance, K is the Boltzmannii)constant and T is the temperature. The dimensions ofa and B arerespectively.a) [ML°T-2), [MLT) b) [M°L-?T'],[MºL2T 41c) [M-12°T?], [M?LT 41 d) [MLT-21,[ML?T?Three vectors P, and Ř satisfy the relation P. = 0 and PR = 0. Thevector P is parallel toa)ORb) Ř c) į d) 0 xTwo balls are thrown from the top of a tower, one straight down with aninitial velocity u and other straight up with the same velocity u. They hitthe ground with speeds in the ratioa) 1:1 b) 1:22:1 d) 2:3A particle is projected at 60° to the horizontal with a kinetic energy K.The kinetic energy at the highest point isa)b) K/4 c) K/2 d) Kiii)iv)zeroPage 1 of 6 |
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Answer» hzshs nnnmnnnbnn.jnnnm |
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| 19. |
समातर म में जोऽने पर भारी बैटरी 64६ चलेगी sow LED२०७FINR| 10owdedपाचणी क्रम में जोऽ-) पर बैटरी (पाक्ष चलेगी |
| Answer» GIVE me RIGHT QUESTIONS | |
| 20. |
Please answer this question with proper explanation....✌️ no spam |
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Answer» 12mExplanation:VELOCITY = 6m/sTime = 5-3=2 sDisplacement = AREA under v-t GRAPH = velocity × TIME= 6×2= 12M |
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| 22. |
a car starts moving with an acceleration a= 5m/s^2,then moves uniformly for some time and then decelerates at a=-5m/s^2 and comes to a stop .The total time of motion is 25s . The average velocity is equal to 20m/s find the time or which the car moves with acceleration ,retardation and uniformly |
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| 23. |
Gravitation unit of force 1: N.m2:dyne3:newton4:kgf |
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Answer» I LOVE U TOO I LOVE U TOO I LOVE U TOO I LOVE U TOO I LOVE U TOO I LOVE U TOO I LOVE U TOO I LOVE U TOO I LOVE U TOO I LOVE U TOO I ALSO REALLY CAN'T LIVE WITHOUT YOU i love u too yrrr I also can't. express..... .you are my love too ❤️❤️❤️❤️❤️❤️❤️ me SIRF appki jaan hu aur app sirf MERI........ I really really love you too Ayu |
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| 24. |
17. A force of 1200 N acts on a 0.5 kg steel ball as a result of collision lasting 25 ms. If the force is in a direction opposite to the initial velocity of 14 ms-l then the final speed of the steel ball would be (1) 24 ms-1 (2) 35 ms-1 (3) 12 ms-1 (4) 46 ms-1 |
| Answer» TION:(4) 46 m/s HOPE this HELP u | |
| 25. |
Pancreas pose its digestive juice into the |
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Answer» There is not a SPECIFIC organ for storing the PANCREATIC JUICE. Hope this will HELP you. |
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| 26. |
Describe the process by which a copper spoon can be coated with silver |
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Answer» The PROCESS of depositing a thin layer of any superior metal over an object of a CHEAPER metal, with the help of electric current is called electroplating. For example; deposition of silver on brass or COPPER objects and that of copper, NICKEL, chromium ETC., on objects made of iron is done by electroplating. |
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| 27. |
2. Which of the following is INCORRECT ?1 point(i)(ii)(iii)(iv) |
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Answer» which TYPE of QUESTION is this I don't UNDERSTAND |
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| 28. |
For a solution with pH value 7 is ? . a) strong acid b) strong base c) weak acid d) weak base |
| Answer» ID HOPE it will HELP you | |
| 29. |
What is the formula to find nature,position and size of the image formed in a mirror plse answer fast |
| Answer» PATA NHI............ | |
| 30. |
light travels from one medium at an angle of incidence 45°to another medium making an angle of refraction 30°the ratio of refractive indices half to media is |
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Answer» Here you go ,A RAY of light MAY approach the BOUNDARY at an angle of incidence of 45-degrees and bend towards the normal. If the medium into which it enters causes a small amount of refraction, then the angle of refraction MIGHT be a value of about 42-degrees.The angle of refraction is 19.27°. Explanation: This can be determined using Snell's law which states: Refractive index = sin i/sin r ( where i is the angle of incidence and r is the angle of refraction)I hope this helps youfollow me and MARK me as brainliest |
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| 31. |
What is the force between two unit masses separated by a distance of 1 m? |
| Answer» TIONAL FORCE between TWO bodies is 1 newton.HOPE YOU LIKE THIS ANSWERPLEASE MARK IT AS BRAINLIEST | |
| 32. |
Cricket ke bare mein vistar se likhiye |
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Answer» what do you meantmake me BRAINLIST |
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| 33. |
Q. 4 In the following figure the card is flicked with a push. &a. What do you observe in this case and why?b. State the law involved in this case.c. What will be your observation if the above coin is replacedfive rupee coin? Justify your answer. |
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| 34. |
Please answer this question with proper explanation... no spam....✌️(Amisha sis bahut Kam bat Karti hai mujse....) |
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Answer» e!!!!Given:A car travels at a SPEED of 60km/h for 0.52h, of 30km/h for the next 0.24h, and then at 70km/h for the next 0.71h.We need to find the average speed of the car.Let us consider the first caseA car travels at a speed of 60 km/h for a time of 0.52 hWe KNOW that Speed = distance / time = 30km/hHence Distance = Speed X TimeDistance=60 x 0.52 = 31.2 km ————–(i)Now, in the second case, A car travels at a speed of 30 km/h for a time of 0.24 HR.We know that speed = distance / time = 30 km/hrDistance = Speed X TimeDistance=30 × 0.24 = 7.2 km ———–(ii)Here in the THIRD case, A car travels at a speed of 70km/h for a time of 0.71 hr.We know that speed = distance / time = 70km/hrHence Distance = Speed X Time=70 × 0.71 hr speed = distance / time = 70km/hrDistance = 70 × 0.71 = 49.7 km ———–(iii)Combining all the EQUATIONS (i), (ii) and (iii) and adding we get,Total distance travelled= (31.2 + 7.2 + 49.7) km = 88.1 km .Total time taken = (0.52 + 0.24 + 0.71) hr = 1.47 hr .Average speed = Total distance travelled / Total time taken= (88.1/1.47) km /hrHence, average speed = 59.9 km/hrHope it will help you!!!!! |
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| 35. |
H) Unit vector does not have any specified a) Directionb) Magnitudec) unitd) All of these |
| Answer» TION:UNIT VECTORS do not have any unit. A unit vector is any vector that has a MAGNITUDE of one and COULD be pointing in any direction. | |
| 36. |
5. Car engine gets heated on running.Give Reason. Answer in long and from chapter Friction |
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Answer» It is due frictionFriction is a force that opposes MOTION between any SURFACES that are touching. Friction can work for or against us. For example, putting sand on an icy sidewalk INCREASES friction so you are less likely to slip. On the other hand, too much friction between moving parts in a CAR ENGINE can cause the parts to wear out. |
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| 37. |
किसी एक खेल के बारे में बताएं |
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Answer» एक टीम बल्लेबाजी करती है और दूसरी टीम गेंदबाजी व क्षेत्ररक्षण। इस खेल में तीन निर्णायक होते हैं, दो मैदान में व एक दूर बैठकर कृत्रिम यंत्र कैमरे से निरीक्षण करता है। ... इस खेल में चार अतिरिक्त खिलाड़ी भी होते हैं जो आवश्यकता पड़ने पर खेलते हैं। यह खेल एकदिवसीय व पंचदिवसीय खेला जाता है। |
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| 38. |
B 48 J © 68A 20 JD 8620, 20 kg ভরের একটি বস্তুর ওপর (5 + 3x) N মানের একতি বরএর ফলে বস্তুটি x-অক্ষ বরাবর x = 2 m অবস্থান নেন।অবস্থানে গেল। ওই বল দ্বারা বস্তুটির ওপর কৃত কার্য। |
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Answer» I cannot understand bengali language EXPLANATION:PLS WRITE it in english language |
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| 39. |
Pencil bent Beneilwater6 which property of light waves beatdeocribed the love diogrom?The image formed looks slightly bent. Lesky?On What factors the angle.g reflection defendo? |
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Answer» What is this..............? |
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| 40. |
16 1$V1cm = 4.86x10cm = 4.86x10° x10 m = 486 nm2056493. The energy associated with the first orbit in the hydrogen atom is -2-18x10 "J atom...) What is theenergy associated with the fifth orbit? (1) Calculate the radius of Bohr's fifth orbit for hydrogen atom.Ans:E2.18x10-18z?JFor hydrogen atom, Z= 1 |
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Answer» vhjjjjjuuhrrsassfgh SORRY |
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| 41. |
1.4 in • SE [সংসদ নমুনা] []35. একটি বস্তুকণা x = 0থেকে x = 5 m পর্যন্ত একটি বলের প্রভাবেF = 7-2x + 3x2 N , x-অক্ষ বরাবর গতিশীল। এক্ষেত্রে কৃতকার্য হবেA 70৪) 270C 350 135 J |
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Answer» what is this is can't understand BENGALI pls WRITE it in english LANGUAGE |
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| 42. |
Two satellites S1 and S2 revolve around a planet in coplaner circular orbits.Their periods of revolution are 1hr and 8 hrs respectively.if the radius of the orbit of S1 is 104 km,what is the radius of the orbit of S2? |
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Answer» hhjkool soŕryExplanation: nhjjkklllloiy |
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| 43. |
Acc to Oersted, flowing electricity can produce magnetism. can magnetism produce electricity? |
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Answer» noExplanation:it cannnot produce electricitybecause electricity produce magnetism so if electric current stop magnetism will also cease but if we try we can produce practically by permanent MAGNET but ut is very low we can do this by PREPARING a generator and in it permanent magnet can be USED istead of electric magnets but litterally we can't produce |
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| 44. |
1. To show that if the earth attracts twoobjects with equal force, they have equal masses. |
| Answer» TION:PLEASE follow meHere's the answer dearProve that if the earth attracts two bodies placed at same DISTANCE from the centre of the earth with the same force, then their masses are EQUAL. Prove that if the earth attracts two bodies placed at same distance from the centre of the earth with the same force, then their masses are equal | |
| 45. |
42. Convert 373 K into °C. |
| Answer» 100 °CHope it helps you my dear FRIEND. Have a great DAY Please mark me BRAINLIEST. Best WISHES for future. | |
| 46. |
electric potential at a point is 200 volts how much work will be done in bringing an Alpha particle from infinity to that point |
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| 47. |
Which liquid is sold by mass?? |
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Answer» You can always find the mass of a liquid by WEIGHING it. You can ALSO derive mass from the density. If you don't KNOW the density, MEASURE the specific GRAVITY with a hydrometer |
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| 48. |
What type of shoes are worn by themountaineers and why? |
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Answer» Mountaineering boots are used for ice CLIMBING, mixed (rock & ice) climbing, and crevasse traverse and RESCUE. They are not completely stiff LIKE ski boots as they need some degree of flexibility for activities such as hiking and snowshoeing. The versatility of these boots also MAKES them popular for other activities. |
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| 49. |
பயன்படுவது : (அ) 15P31(ஆ) 15P32(இ) 26Fe59(ஈ) 11Na24Which of the following is used to detect the presence of blocks in blood vessels ?(a) 15P31(b)(c)(d) 11Na2425 Fe5915P32( திருப்புக / Turno |
| Answer» B)......................... | |