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.
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3. A stone is dropped from the roof of a tower of height h. The total distance covered by the stone in the last 2 seconds of its motion is equal to the distance covered by it in the first four seconds. Find the height of thetower. |
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Answer» h = 125 mExplanation:Hello Friend, LETS say that the stone is in motion for ' t ' seconds.Distance covered by the stone in first 4 seconds:u = 0 , t =4 , a = 10s = 1/2 x 10 x 16 = 80 mIn last two seconds:The stone would already have some velocity DUE to it's drop from intitial position. Let us find this velocity:t = t -2 (since only two seconds are left in motion) , u = 0 , a =10v = 10(t-2)The stone would have a velocity of 10 (t-2) two seconds before it hits the ground.So,u = 10(t-2) , a = 10 , t =2 (as it is given only two seconds are left in motion) , s = 80 (as it is given distance covered in first 4 seconds is equal to this distance)80 = 10(t-2)2 + 5(4) => 80 = 20t - 40 + 20 => t = 5 secondsTherefore the stone is in motion for 5 seconds.IN the questions, they demand us to find h.h = 1/2 x 10 x (25)Therefore h = 125 m Dear friends, I have directly applied equations of motions here. Please understand it, I used only s = ut + 1/2 at^2 and v = u + at , nothing else.If you LIKE the answer please mark me as brainliest and also give me thanks. |
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| 2. |
P Flag question The temperature at which phenol iscompletely miscible in water to form ahomogeneous solution is called:जिस तापमान पर एक सजातीय समाधान बनाने केलिए पानी में फेनोल पूरी तरह से गलत है, उसे कहाजाता है:Select one:A. Eutectectic temperatureEutectectic temperature |
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Answer» eutectectic TEMPERATURE |
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| 3. |
Explain ram and rom |
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Answer» RAM, which stands for random ACCESS memory, and ROM, which stands for read-only memory, are both present in your computer. RAM is volatile memory that temporarily STORES the files you are working on. ROM is non-volatile memory that permanently stores INSTRUCTIONS for your computer |
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| 4. |
विकास के अनुसार कौन सा करना सही है |
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Answer» write full QUESTION so we can help youExplanation:HOPE you understand |
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| 5. |
Fill in the blank A body is projected with a velocity of 30m / sec at an angle of 30° with thevertical. The maximum height the object will reach is______ |
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Answer» 33.75 mExplanation:We know MAX height = u^2 sin^2thetha / 2G (thetha is the angle MADE with the horizontal)------ Here, H = 900 X (3/4) / 20 = 135/4 = 33.75Please mark me as brainliest and follow me if you like the answer. |
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| 6. |
Integrate (4.e^5x)dx |
| Answer» TION: | |
| 7. |
Meaning of intenstiy |
| Answer» TIVRATA. ............ | |
| 8. |
aa particle is dropped from 200 tall tower at the same time and another particle is thrown upward with velocity 50 metre per second will it when and where both the particles meet |
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Answer» Explanation:one must find out the time taken by the body sent upward to meet the top body (as if the body was not dropped) so if you divide the height 200m by the velocity 50m/s then one gets 4 sec. if you do all EQUATIONS as done by another responder for accelerated motion ultimately you will get the same answer. you can ask why you are getting the CORRECT time interval even if g was put off. it so happens that the acceleration produced each sec to the top body (dropped)is also a DECELERATION produced to the velocity of bottom particle, so net EFFECT of g gets adjusted. now to find where they will meet -the top one will travel a distance in 4 sec d= (1/2) g . t^2 = (1/2) x 9.8 x 16 = 78.4 meters from the top ; so from the bottom the distance would be d’= 200–78.4 = 121.6 m |
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| 9. |
The stress acting on a wire is 100 dulynes/ cm sqaure of this is expressed in |
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Answer» dyn/cm² – Dyne per Square Centimetre Pressure Unit Dyne per Square Centimeter is ONE of the smallest pressure units and is derived from the CGS unit for force where 1 dyne equals 1 gram accelerated by 1 centimeter per second per second. 1 Dyne per Square Centimetre equals 0.1 pascals. The dyn/cm^2 is mainly used for pressures associated with the measurement of shear stress and is strongly linked to the measurement of surface tension where dyne/cm is a commonly used unit. You will find conversion values for 1 dyn/cm2 into other pressure units in the table below. To find the number of dynes/cm2 that other pressure units convert into, please CLICK on the appropriate link from the choices below. For calculating SEVERAL values of dynes/cm2 we SUGGEST you use our pressure unit CONVERTER to save time.Explanation: |
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| 10. |
4 + Fish R tourist place |
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Answer» I can't UNDERSTAND your QUESTION |
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| 11. |
वेट बॉक्स में बाटों का अनुपात 5:2:2:1 होता है - क्यों? |
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Answer» म्नलिखित है:माना कि बाट 5 इकाई, 2 इकाई, 2 इकाई तथा 1 इकाई के हैंहमारे पास 2 इकाई के 2 बाट तथा 5 इकाई और 1 इकाई के 1-1 बाट हैंयदि हमें 3 इकाई का बाट चाहिए तो3 = 2 + 1यदि हमें 4 इकाई का बाट चाहिए तो4 = 2 + 2यदि हमें 6 इकाई का बाट चाहिए तो6 = 5 + 1यदि हमें 7 इकाई का बाट चाहिए तो7 = 5 + 2यदि हमें 8 इकाई का बाट चाहिए तो8 = 5 + 2 + 1यदि हमें 9 इकाई का बाट चाहिए तो9 = 5 + 2 + 2यदि हमें 10 इकाई का बाट चाहिए तो10 = 5 + 2 + 2 + 1इस प्रकार हम एक से दस तक सभी इकाई के बाटों का निर्माण कर सकते हैं|हालांकि 5:2:2:1 के अलावा भी अनुपात हैं जिनसे 1-10 तक के इकाई के बाटों का निर्माण किया जा सकता हैपरंतु 5 इकाई का बाट अधिक उपयोगी होने के कारण यह अनुपात 5:2:2:1 ही लिया जाता है|आशा है यह उत्तर आपकी सहायता करेगा|और जानिये:इसी प्रकार के प्रश्नbrainly.in/question/20560081 |
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| 12. |
If the stream of protons moves parrallel to each other in the same direction will.......each other? a)attract b)repel |
| Answer» REPEL each other.hope it HELPED you | |
| 13. |
Relation between SI unit and CGS unit of magnetic field is____ |
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Answer» One gauss is defined as one MAXWELL per SQUARE centimeter. The cgs SYSTEM has been SUPERSEDED by the International System of Units (SI), which uses the tesla (symbol T) as the unit of magnetic flux density. One gauss equals 1×10−4 tesla (100 μT), so 1 tesla = 10,000 gauss. |
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| 14. |
Explain the wave particle duality of matter & explain its expression for the 2. सिद्ध कीजिये कि परिमित चौड़ाई एवं अनंत गहराई के विभव कूप में कण की उर्जा अवस्थाहैं।Prove that the energy state of a particle in a potential well of finite width andnotequispaced.खण्ड 'ब'/Section-B(Quantum Mechanics Spectroscop3.x-किरण विवर्तन का लाउए समीकरण निगमित कीजिए। तथा इसके.प्रयोग को समझाइये |
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Answer» tyhbjiihbjijcgiihvh |
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| 15. |
both a and b are thrown simultaneously as shown from a very high tower. without using relative motion find the distance between two balls after one second validate it using relative Motion mechanism |
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Answer» I HOPE it is helpful to youparticle start motion from rest according to formula θ=(t4/60)- (t/4). Then the ANGULAR VELOCITY and angular ACCELERATION at time t=10s. |
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| 16. |
Which of the following objects cannot be charged by physical connection?1 point |
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a bus P is travelling with speed 40 km per hour towards north and another bus Q is travelling with speed 30km per hour.what is the magnitude and direction of velocity of bus p with respect to Q and bus Q with respect to p |
| Answer» TION:आई डोंट नो आई डोंट नो | |
| 18. |
(b) What is the relationship between the mass and inertia? One example |
| Answer» G ..RING have INERTIA mr² | |
| 19. |
Who found human eye |
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Answer» Harminder DuaExplanation:The feature is named for its discoverer, Harminder Dua, a PROFESSOR of OPHTHALMOLOGY and visual SCIENCES at the UNIVERSITY of Nottingham.Hope this ANSWER is helpful for you.Thank you.PLEASE MARK ME BRAINLIEST |
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| 20. |
Drive expression of M.F. Is a solenoid carrying current I & number of turn per unit length are n |
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Answer» Ampere's circuital law STATES that line integral of magnetic field around any closed loop is equal to μ o times the electric current FLOWING through the cross-section area enclosed by that loop.Mathematically, ∮B.dl=μILet the current flowing in the solenoid having number of turns per unit length N be I.Magnitude of magnetic field inside the solenoid is B while at outside is zero.Now ∮ loop B.dl=∫B ab .L+∫B bc .L ′ +∫B cd .L+∫B da .L ′ The value of first term ∫B ab .L=BLThe second and fourth term are zero because ANGLE between magnetic field and the length loop is 90 o .The third term is also zero as the value of magnetic field outside the solenoid is zero.Total current flowing through the loop I total =(nL)IFrom Ampere's circuital law, we get BL=μ o (nLI) ⟹ B=μ o nI |
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| 21. |
Find the derivative of ...by division rule if y=x/(x²+1)^1/2.... |
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Answer» y=(X+1)(x+2) 2 DXDY =(x+1) dxd (x+2) 2 +(x+2) 2 dxd (x+1) [APPLY product Rule of differentiable][ dxd f(x)⋅g(x)= dxd f(x).q(x)+ dxd g(x)]=(x+1)⋅2(x+2)+(x+2) 2 ⋅1=(x+2)[2(x+1)+x+2]=(x+2)[2x+2+x+2]=(x+2)[3x+4]=(x+2)(3x+4). |
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| 22. |
A body of mass 1 kg is moving a speed of 10m/s on a level surface. It comes to rest after travelling a distance of 5m. Calculate force experienced by the object. |
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Answer» Mass of a BODY = 1 kg. Initial velocity, u = 10 m/s.Final velocity, V = 0 m/s.Distance = 5 m. TO FIND : FORCE experienced by the object. FORMULA : SOLUTION : A body of mass 1 kg is moving with a speed of 10 m/s. So, Object travels 10 m in 1 sec. We know that, Now, The force experienced by the body is 20 N. |
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| 23. |
Number of base SI unit – physics question |
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Answer» The SI is made up of 7 base units that DEFINE the 22 DERIVED units with special names and symbols.Explanation:Hope it helps |
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| 25. |
E. Match the statements in Column A, with those in Culum Column BColumn A1. A body having light energy of its own.2. A straight line path along which light energy travels.3. A collection of large number of rays of light.4. Anything through which light cannot pass.5. An insect which emits light in the dark.(a) Beam of light(b) Glowworm(c) Opaque(d) Ray of light(e) Luminous body |
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Answer» sun A ray A beam OPAQUE medium.fireflies or lightning bugsExplanation:and I don't UNDERSTAND the A B c d SORRY |
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| 26. |
Meaning of osmosis??????? Answer in 100 words |
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Answer» Osmosis is the MOVEMENT of a solvent across a SEMIPERMEABLE membrane toward a higher concentration of SOLUTE (lower concentration of solvent). In biological SYSTEMS, the solvent is TYPICALLY water, but osmosis can occur in other liquids, supercritical liquids, and even gases. |
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| 27. |
Calculate absolute errors, relative and percentage error of the following observations 2.03 cm, 2.06 cm, 1.91 cm, 1.98 cm , 2.02 cm. please full solution with explain ple ple not shortcut answer ple |
| Answer» TION:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaAaaaaaaaaaaaaaaaaaAAaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa | |
| 28. |
1. light travels from one medium at an angle ofincidence wg to another medium making anangle of defraction 30, the ratio of defractiveindices half to media is, |
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Answer» it's not DEFRACTION it is REFRACTION |
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| 29. |
Explain the principal of phisical fitnus devploment |
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Answer» you MUST GO to YPUR own TUTOR EXPLANATION: |
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| 30. |
Lightning occurs when the 1 pointcharged clouds move away from the ground.charged clouds come in contact with the ground.excess positive charges get discharged from the clouds to the ground.excess negative charges get discharged from the clouds to the ground.Other: |
| Answer» HELLO BRO be SAFE and STAY HEALTHY | |
| 31. |
H 0. Critical angle of a denser medium is 25°.If a ray incidents with the same angle 25°then angle of refraction is ..... [ ]1) 25° 2) 50° 3) 90°4) 12/20 |
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Answer» 50° Is The answer of This QuestionExplanation:Please MARK As BRAINLIESTI can FOLLOW You But You Before me Mark As Brainliest |
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| 32. |
Power factor is one for a.pure inductorb.pure capacitorc.pure resistord.either an inductor or a capcitor |
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Answer» ................ |
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| 33. |
Q4. If the error in the measurement of radius of sphere is 2% then the error in the determination of volume of the sphere will be 4% (b) 6%(C) 8% (D) 2% |
| Answer» TION:C).................. | |
| 34. |
8. Calculate the density of a solid from the following data :(a) Mass of solid = 72 g(b)Initial volume of water in measuring cylinder= 24 mL(c) Final Volume of Water solid completely immersed in water=42mL. |
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Answer» Mass of solid= 72 g volume of the solid = FINAL volume - Initial volume = 42 - 24ml. = 18 ml DENSITY of the solid = Mass / Volume =( 72/18) g/ml. = 4 g/ml |
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| 35. |
Which collects the sound from the surrounding? |
| Answer» MARK this ANSWER BRAINLEST to WATCH answer | |
| 36. |
(xix)a = coefficient of linear expansion |
| Answer» | |
| 37. |
the mass of person is 30kg, he uses a force of 50N and displaces object 4cm, work done by him is? plz jaldi batao |
| Answer» 2 NEWTONS will be the WORD DONE by the BODY | |
| 38. |
Q4. If the error in the measurement of radius of sphere is 2% then the error in the determination of volume of the sphere will be 4% (b) 6%(C) 8% (D) 2% |
| Answer» TION:ffggugbjjb bkgfuggb dyjchhv gighvvb MARK me BRAINLIEST | |
| 39. |
When an uncharged body B is brought into contact with a positively charged body A: 1 pointA loses its chargeB acquires positive chargeB acquire no chargeB acquires negative chargeOther:Clear selection |
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| 40. |
A butik i bushed alona horizontal sudah in such a way that it starts withsebzeity of 12 mjese e jebaty dessellata 20k of osmsa) Eind the thre it will take to construitअ पार्टिकल इज पोस्टल आर्डर होरिजेंटल सर्फेस इन सर्च ऑफ यूनाइटेड स्टेट्स विद वेलोसिटी ऑफ 12 मीटर पर सेकंड इट्स वेलोसिटी रेफ्रिजरेटर रेट ऑफ 0.5 मीटर पर सेकंड स्क्वायर फाइंड अ टाइम इट विल टेक टू कंप्रेस्ड |
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| 41. |
druing the neutralization reaction of acid with base the products formed are (a) salt+oxygen (b)salt +water(c) water+hydrogen (d)salt+hydrogen |
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Answer» during neutralization reaction of ACID and base the products formed are SALT + WATER.....Explanation:hope this will help U..... |
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| 42. |
Q.. A quanta of energy of lattice vibration is known as.................. Challenge to everyone |
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Answer» PhononExplanation:An exact amount of ENERGY ħω must be SUPPLIED to the HARMONIC oscillator lattice to push it to the NEXT energy level. |
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| 43. |
What is the unit of prassure |
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Answer» si UNIT of pressurefor pressure, the si system's basic unit is PASCAL (PA), which is n/m² (newton per square meter, while newton is kgm/s²). pascal is a very SMALL pressure unit and for example the STANDARD atmospheric pressure is 101325 pa absolute. |
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| 44. |
What is electric current ?? |
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Answer» An electric current is the RATE of FLOW of electric charge past a POINT or region. An electric current is said to exist when there is a NET flow of electric charge through a region. Electric charge is carried by charged particles, so an electric current is a flow of charged particlesExplanation:Hope it helps |
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| 45. |
୧. ଗୁଣଫଳ ନିର୍ଣ୍ଣୟ କର :(କ)୫୭୯(Sx ୨୪o 2 ) |
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Answer» -not ABLE to understand your languagehope it's helps you PLEASE mark me as Brainliest and FOLLOW me |
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| 46. |
Rahul traced a ray of incident on a plane mirror. He also plotted the normal to the surface and calculated the angle of incidence to be 40 degree as shown in the image. Where should he draw the reflected ray? |
| Answer» ANGLE of incidence is always EQUAL to angle to REFLECTION EXPLANATION:so angle of reflection is ALSO 40° | |
| 47. |
A ice piece of 40g at -10°C temperature is dropped in a water of 100g at 30°C. What is the final temperature of the mixture? ( Latent heat of fusion of ice = 80 cal/g and sp.heat of ice = 0.55) Hints : use principle of calorimetry |
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Answer» tion:The dialyzer, or filter, has two PARTS, one for your BLOOD and one for a washing fluid called DIALYSATE. ... Smaller waste PRODUCTS in the blood, such as urea, creatinine, potassium and extra fluid pass through the membrane and are WASHED away. |
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| 48. |
Which part is an ear connects the outer ear and middle ear? |
| Answer» TION:please FOLLOW meHere's the answer dearExternal auditory canal or TUBE.This is the tube that connects the OUTER ear to the inside or MIDDLE ear. | |
| 49. |
D. Tick (v) the most appropriate answer : 1. Which is not a non-luminous body?(a) Earth(b) Moon(c) Glowworm (d) Wood2. Which is not a luminous body?(a) Sun(b) Star(c) Planet(d) Glowworm3. Which is a transparent body?(a) Muddy water (b) Oiled paper(c) Stone(d) Clear glass4. Which is not an opaque body?(a) Stone(b) Wood(c) Clear water(d) Coal5. Which is not a translucent medium?(b) Diamond(d) Oiled paper(a) Butter paper(c) Ground glass |
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Answer» woodPlanetclear glassclear waterGround GRASS |
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| 50. |
4. Ratio of distance covered by an object tothe time taken for that |
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Answer» tion:please follow mehere's the answer dearThe DISTANCE covered by an object in a unit of TIME is CALLED the speed of the object. The formula for speed can be written as the total distance covered divided by the total time TAKEN. Thus, speed equals total distance covered divided by the total time taken to COVER the distance. |
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