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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. |
A simple pendulum complete 40 oscillations in one minute find its frequency and time period |
| Answer» FREQUENCY = 0.667Hz TIME period = 1.5secExplanation:GIVEN Number of OSCILLATIONS, N = 40 Time t = 1MIN Frequency f= N /t = 40 / 60 =0.667Hz Time period, T= 1 /f =1.5sec Hence, frequency is 0.667Hz and time period is 1.5sec | |
| 2. |
Logical thinking is a ___ change. |
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Answer» That we are REASONING CHALLENGING changeExplanation:"If you LIKE my ANSWER please follow me Just." |
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| 3. |
Forces of 3.0 N and 4.0 N act at right angles on a block. What should be the mass of the block for the acceleration to be 10 m/s2? |
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Answer» tion:(5) The whole is greater than the part. (6) Things which are double of the same things are equal to ONE ANOTHER. (7) Things which are halves of the same things are equal to one another. ... AXIOM (5) GIVES us the definition of 'greater than'.(5) The whole is greater than the part. (6) Things which are double of the same things are equal to one another. (7) Things which are halves of the same things are equal to one another. ... Axiom (5) gives us the definition of 'greater than'.(5) The whole is greater than the part. (6) Things which are double of the same things are equal to one another. (7) Things which are halves of the same things are equal to one another. ... Axiom (5) gives us the definition of 'greater than'. Plz mark me as BRAINILIEST I REALLY NEED plz |
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| 4. |
Example 9.7 A girl of mass 40 kg jumps with a horizontal velocity of 5 ms' ontoa stationary cart with frictionlesswheels. The mass of the cart is 3 kg.What is her velocity as the cart startsmoving? Assume that there is noexternal unbalanced force working inthe horizontal direction. |
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Answer» this is your totally CORRECT answerExplanation:HOPE it HELPS YOUPLEASE MARK as brainliest plzzzzzzz and follow me |
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| 5. |
एक कण को v वेग से प्रक्षेपित किया जाता है ताकि यह क्षैतिज तल पर परास का मान अधिकतम ऊँचाई की दुगुनी रख सके। यदि g गुरूत्वीय त्वरण है। तब इसकी परास होगी |
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Answer» एक कण को V वेग से प्रक्षेपित किया जाता है ताकि यह क्षैतिज तल पर परास का मान अधिकतम ऊँचाई की दुगुनी रख सके। यदि gगुरूत्वीय त्वरण है। तब इसकी परास होगी |
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| 7. |
ANSWER QUICK PLEASE Which statement describes a property of a proton? is found outside the nucleus has a positive charge has less mass than an electron is repelled by electrons |
| Answer» TATEMENT describes the property of a proton ?It is found outside the nucleus It has a positive charge It has less mass than an electron It is repelled by electronsSolution:Protons are sub-atomic particles with a NET positive charge equal to +1.6 × 10^(-19) Coulomb.Hence , "It has positive charge" : This describes the property of a proton.Other options are eliminated:Proton is found INSIDE the nucleus of an atom along with neutron (not "outside").Proton is much heavier than electron and has higher mass.We know that unlike charges attract each other. So, ELECTRONS and protons being unlike charges will attract each other (not "repel" ). Hope It Helps. | |
| 8. |
T 5. If the velocity of a train which starts from rest is 72 km/h (20 m/s)after 5 minute, find out its acceleration and the distance travelledby the train in this time.Alrmlb (15mls) within 5 seconds from |
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Answer» 1/15m/s²,,,,,,3000m EXPLANATION:mark me BRAINLIEST pleaseor YE KYA h :- "Alrmlb (15mls) WITHIN 5 seconds from" |
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| 9. |
बॉक्स में दिए गए शब्दों की सहायता से निम्नांकित वाक्यों को पूर्ण कीजिए: loudly eagerly bravely clearly sadly1. He waswaiting for me.2. Tipu Sultan fought3. Manorma reads4. They shoutedAll of us returned home |
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Answer» s WAITING for me eagerly.2 Tipu sultan fought bravely.3 Manorma reads clearly.4 They shouted loudly.5 All of us return home sadly.Please mark me brainliest BCOZ I tried my BEST to give best ANSWER. |
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| 10. |
resistance of a metal wire of length 1m is 26ohmi if the diameter of the metal at that temperature using table 12.2 predict the meterial of the wire? |
| Answer» TION:R=26 Ωl=1md−0.3mmr=2d=20.3×10−3=0.15×10−3mA=πr2=3.14×(0.15×10−3)2=0.071×10−6m2R=AρLor ρ=lRA=126×0.071×10−6=1.84 | |
| 12. |
Q.8 Given here is a velocity-time graph of the motion of a body. What is the distance travelled by the body during the motion?kr.1200A+AB) BCb, 1210A+BC)XOC1200C+AB)KADd. 12( AD BEOC |
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Answer» bdjdbdjdjwjdokzkdnsjx.e |
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| 13. |
Describe double circulation in human beings. Name the group of animal with double circulation? How is it importantfor them?for 5marks |
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Answer» Double CIRCULATION of blood....... The left ventricle PUMPS oxygenated blood into aorta for systematic circulation. It is necessary in human being to separate oxygenated and de-oxygenated blood because this makes their circulatory system is more efficient and helps in MAINTAINING CONSTANT body temperature. |
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| 14. |
A force is making an angle 0 with x axis resolve it into it's perpendicular components |
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Answer» Given that the magnitude of force, F=10NWe know the rectangular components of a A are given by:Acosθ and AsinθTherefore, magnitude of the components of F will be 10cos30° and 10sin30° where, θ=30° as GIVENBY putting the VALUE of cos30° and sin30° the components are 5³ N and 5N. |
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| 15. |
The essential difference between an AC generator and a DC generator isthat: |
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Answer» AC generator has slip RINGS while DC generators has a comutator Explanation:AC generator has slip rings. A slip ring is an electromechanical DEVICE that allows the transmission of power and electrical signals from a stationary to a rotating STRUCTURE. A slip ring can be used in any electromechanical system that requires rotation while transmitting power or signals.DC generator has a commutator. The commutation in DC machine or more specifically commutation in DC generator is the process in which generated alternating current in the armature winding of a dc machine is converted into direct current after going through the commutator and the stationary brushes. PLEASE mark me as brainliest PLZ do it fast and I will follow you |
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| 16. |
Define angular velocity prove [ a= v^2 / r^2 ] and a = rw2 |
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Answer» The greater the rotation angle in a GIVEN amount of time, the greater the angular velocity. Angular velocity ω is analogous to linear velocity v. We can WRITE the relationship between linear velocity and angular velocity in TWO DIFFERENT WAYS: v=rω or ω=v/r.Explanation: |
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| 17. |
Calculate de-brogelli wave length of basketball having mass 200gm & moving with velocity of 5m/hr |
| Answer» UN peatón camina a lo largo de una calle de 20 metros, en línea recta a una velocidad CONSTANTE de 2,5 m.s-1 hasta llegar a la MITAD del recorrido, luego comienza a correr con una aceleración constante de 2 m.s-2 durante 2 s. | |
| 18. |
If radius =r, height=h, length=l and breadth=b. Then which of the following relation is correct? * (a)volume of cube= (h)3/l(b)volume of cuboid= l×r(c)volume of sphere = 1/3×π×(r)3(d)volume of cylinder=π(r)2h |
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| 19. |
if the focal length of concave mirror is 20 CM then where the object he placed so that the image is formed of same length that of the object? |
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Answer» ANSWERIt is given that,Focal lengthf=−20cmh i =3h o The image is three times the size of the OBJECT. So there are two cases.Case 1. For real imagem=− uv =−3v=3uUsing mirror’s formulaf1 = v1 + u1 −201 = 3u1 + u1 u= 3−80 cmCase 2. For virtual imagem= u−v =+3v=−3uAgain USING mirror’s formula−201 = −3u1 + u1 u= 3−40 cmThe possible VALUES of u are 3−80 cmand 3−40 cm.Explanation: I am not sure about this QUESTION |
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| 20. |
All the three vectors L sand J are 1)). parallel 2.Antiparallel 3.Quantised 4.perpendicular |
| Answer» UNIT VECTORS i^,J^ and k^are PERPENDICULAR to each other | |
| 21. |
Calculate Potential Energy of the given system. q1 .______x______. q2x = length |
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| 22. |
I A+B=C and A =V3, B = 13 and C = 3, then angle between A and B is- |
| Answer» UT, kgzYrxdhnmmtmtnrumyls। gk।। GK।LHZ | |
| 23. |
What is the angular velocity of a body on the surface of the earth at the equator ? Also find its linear (b) 0-0017 rad s-2 |
| Answer» FULL QUESTIONEXPLANATION:UPLOAD | |
| 24. |
Which particle is responsible for gravitational pull with flow chart ??? |
| Answer» GRAVITY Explanation:The gravity is responsible for GRAVITATIONAL PULL with flow chart.Hope it HELPS you guys | |
| 25. |
A particle travels with velocity 10 î for 2 seconds and then 20 im/s for 4 seconds. Average speed of particle is17.1 m/sO16.7 m/s20 m/s18.1 m/s |
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Answer» 16.8and23.5 I'm........... |
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| 27. |
Network PQRS is made as under:PQ has a battery of uv and negligible resistance with positive terminal connected to P,QR has a resistance of 60ohm.ps has a battery of 5v and negligible resistance with positive terminal connected to P.RS has a resistance of 200ohm if a milli- ammeter 10F 20ohm resistance is connected between Pand R.caculate the reading of the milliammeter |
| Answer» TION:Network PQRS is MADE as under:PQ has a BATTERY of uv and negligible resistance with positive terminal connected to P,QR has a resistance of 60ohm.ps has a battery of 5v and negligible resistance with positive terminal connected to P.RS has a resistance of 200ohm if a MILLI- ammeter 10F 20ohm resistance is connected between P. | |
| 28. |
A particle with initial velocity 10 i m/s moves with constant acceleration of 2im/s. Displacement in 5th second is10 m20 m19 m25 m |
| Answer» 19M EXPLANATION:MARK me BRAINLIEST PLEASE | |
| 29. |
two springs A and B of stiffness constant K and K B respectively are stretched by the same force if KA=2KB then the ratio of work done in stretching the spring is |
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Answer» onsider the spring constant of TWO spring A and B are KA and KB respectively and are STRETCHED by applying the FORCE of the same magnitudeplz mark me branliest |
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| 30. |
ترومولوشن کونو آنڈل محلول کورس اور سنن من مرة Difference between True Solution, Colloidal solution and Coarse suspensionColonialSESuspensionنی استPropertyTrue solutionSolutionNo(Nature)درختیہ بہتر ہوتا ہےدریوں کے قطر ے کے زروں کا قطر 1 تایہ گیرکشور برتر برتے اور ہر شر سےان کے اور اس کی نظر ان کے زروں کا تقتصر--سمسےشرح سےسرا سے(Appearence) 5-6رکھنے میر شن سےپتھر یا نشان بہت سے غیر شفان پور سے |
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Answer» not UNDERSTAND UR QUESTIONS OKKK |
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| 31. |
2. An object is moving with uniform speed in a circle of radius r. Calculate the distance and displacement: (a) when it completes half the circle (b) when itcompletes full circle.2 Ma |
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Answer» a)Distance= πrDisplacement = 2rb)Distance= 2πrDisplacement = 0Explanation:a) Distance= πr (as it completes half a circle 2πr/2 )Displacement = 2R b) Distance= 2πrDisplacement = 0 (it comes back to intial POINT ) |
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| 32. |
A small rocket has a force upward of 23 N due to its thrust and a weight (gravitational force) of 4.9 N. What is the acceleration of the rocket? |
| Answer» TION:MARK me as BRAINLIEST PLZ THANKS | |
| 33. |
I need a solved answer pls help me |
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Answer» doubledExplanation:1/w * YSI(123doubled |
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| 34. |
If one body is thrown vertically upwards with speed u and other body is thrown vertically upward with speed 2u. The ratio of maximum heights reached by two bodies is0.250.514 |
| Answer» RATIO of MAXIMUM HEIGHTS = 1 : 4 | |
| 35. |
Q7.a bullet of 100g strikes a sand bag at speed of 1000m/s and get embedded after travelling 5 cm . calculate the resistive force exerted by the sand on the bullet |
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Answer» :Mass of bullet = 100g = 0.1kgInitial speed = 1000m/sDistance covered by bullet = 5CM = 0.05mWe have to FIND resistive force exerted by the sand on the bullet★ In order to find force exerted by the sand, first we need to find acceleration of bullet.Using third equation of kinematics :v² - u² = 2asv denotes final speedu denotes initial speeda denotes ACCELERATIONS denotes distanceHere final speed of bullet will be zero as it comes to rest.➝ 0² - (1000)² = 2(a)(0.05)➝ -1,000,000 = 0.1a➝ a = -10,000,000 m/s²Negative sign shows retardation!We KNOW that, Force = Mass × Acceleration➝ F = m × a➝ F = 0.1 × 10,000,000➝ F = 1,000 kN |
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| 36. |
Write expansion of Binomial theorem upto 3 terms. . |
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Answer» The Binomial THEOREM In Action To get started, you need to identify the TWO terms from your binomial (the x and y positions of our formula above) and the POWER (n) you are expanding the binomial to. For example, to expand (2x-3)³, the two terms are 2x and -3 and the power, or n value, is 3.Explanation: |
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| 37. |
The line of Balmer series are observed in region of the electromagnetic spectrum |
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| 38. |
calculate the angular speed of second hand of a clock .If radius of second hands of a clock .If radius of second hand is 2cm, also calculate linear speed |
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Answer» speed of SECOND's handω= REVOLUTION TIME(in SEC)2π Revolution time of second's HAND =1rev/min=1rev/60sec⇒ω= 60sec2π So the speed of tip of the hand is given by⇒v=rω=2cm× 60sec2π ≃ 0.21cm/sec |
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| 39. |
The driver of an excavator operates a small lever which causes its heavy mechanical arms to move. a) Which law is made use of here? |
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Answer» ................................ |
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| 40. |
How high could u jump on each planet when your initial velocity is 10m/s? |
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Answer» 5.09mExplanation:Here is your answer if U GET the concept then mark this as BRAINLIEST |
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| 42. |
Please answer me this questions |
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Answer» tion:In NCERT book if science class 10TH it is given that how do you WRITE a chemical equation properly. |
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| 43. |
If you and your friend ride a bicycle on the road, you will notice that at different times, both bicycles are found at different positions. Note down five positions at five time intervals for each. a) Plot Position Time Graph for Uniform Motion b) Plot Position Time Graph for Non Uniform Motion c) Calculate Velocity from Position Time Graph d) Calculate Distance travelled by you and your friend in 10 Minutes e) Examine whose speed is more? |
| Answer» TION:The addition of hydrogen halide to an unsymmetrical ALKENE gives two products. Propene on reaction with hydrogen bromide forms 80 % 2- bromopropane (isopropyl bromide) and 20% 1-bromopropane(n-propyl bromide)Propene when reacted with HBr in presence of peroxide, it gives 1,-Bromopropane. The addition is according to ANTI Markovnikovs rule.Addition of HBr to propene gives 2- bromopropane. The hydrogen of HBr ADDS to CARBON 1 of propene and bromine adds to Carbon 2have a good dayhave a good.life on | |
| 44. |
Calculate the P.E of an object of mass 50kg raised to a height of 4m above the ground. If the object falls down, what is the K.E when it has fallen through 2m? What is the velocity of the object when it just touches the ground? Please don't spam. |
| Answer» HOPE this CLEARS your DOUBT!!!! | |
| 45. |
When an object is moving in simple harmonic motion, which of the following is at a minimum when the displacement from equilibrium is zero? |
| Answer» TION:ACCELERATION ZERO on LAST POINT.. | |
| 46. |
The energy of an electron in the ground state is |
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Answer» It is GIVEN that the energy of an electron in the ground state of the hydrogen atom is –2.18 × 10–18 J. Therefore, the energy REQUIRED to remove that electron from the ground state of hydrogen atom is 2.18 × 10–18 J.Explanation:The ionization enthalpy is the AMOUNT of energy required to remove an electron from ground state to infinity. The energy of electron in the ground state is −2.18×10−18 J. The energy of electron at infinity is zero. The energy required to remove electron is 0−(−21.8×10−18 J)=2.18×10−18 J. To remove 1 mole of ELECTRONS, the amount of energy required is 2.18×10−18×6.023×1023 =13.130×105 J/mol. This is the ionization enthalpy of hydrogen. |
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| 48. |
Friends please tell real cash games |
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Answer» winzo, mpl, meesho ,dream11, HAGO,etc......Explanation:please MARK me BRAINLIST. |
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| 49. |
Define: Period of oscillation and length of a pendulum. Draw a simple pendulum neatly and mark the length of the pendulum on it |
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Answer» lum is a WEIGHT suspended from a pivot so that it can swing freely. ... When released, the restoring force acting on the pendulum's mass CAUSES it to oscillate about the equilibrium position, swinging BACK and forth. The time for one complete cycle, a left swing and a right swing, is called the period.Mark my answer as branliet |
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