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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 bus decreases its speed from 80 kmhr to 60 kmhr in 5 s. Find the acceleration of the bus. |
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Answer» hat,INITIAL speed of BUS(u) = 80 km/h = 200/9 m/sfinal speed of the bus(v) = 60 km/h = 150/9 m/stime taken(t) = 5 secacceleration (a) === a = 1.1 m/s² |
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| 2. |
A bus starting from rest moves with a uniform acceleration of 0.2m/s 2 for 5 minutes. Calculate the speed acquired and the distance covered. |
| Answer» HOPE you UNDERSTAND EXPLANATION:THANK you | |
| 3. |
Where is Mathematical tools chapter in ncert class 11 |
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Answer» tion:1.Graphs2.Calculus3.Vectors4.Approximation5.Trigonometry6.LogarithmOnce you have Basics of all these TOOLS..You can go SMOOTHLY with this Subject...mark me brainlest ☺️ PLZZZZZZZ |
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| 4. |
Explain the prinExplain the principle of torque production in a DC motor?ciple of torque production in a DC motor? |
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Answer» When a DC machine is loaded either as a motor or as a generator, the rotor conductors carry current. These conductors lie in the magnetic FIELD of the air gap. Thus each conductor experiences a FORCE. The conductors lie near the surface of the rotor at a common radius from its center. Hence torque is produced at the circumference of the rotor and rotor starts rotating. The term torque as best explained by Dr. Huge d Young is the quantitative measure of the TENDENCY of a force to cause a rotational motion, or to bring about a change in rotational motion. It is in fact the moment of a force that produces or changes a rotational motion.The equation of torque is given by, Where, F is force in linear direction.R is radius of the OBJECT being rotated,and θ is the angle, the force F is making with R VECTOR |
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| 5. |
Suggest guide book for physics class 10th cbse |
| Answer» MERITNATION is the very USEFUL APP and diest | |
| 6. |
Coulombs law is given by f kq1q2 r2 where n is equal to |
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Answer» The force exerted by one charge q on ANOTHER charge Q a distance r away is given by: Coulomb's law: F = kqQ / r2. the constant k = 8.99 x 109 N M2 / C2THANKS....... |
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| 7. |
Pls give detailed answer.... |
| Answer» ANS is OPTION a) GO through the ATTACHMENT | |
| 8. |
Given that A=2i-3j,B=5j+6kand C=xi+4j-2k find x |
| Answer» TION:very EASY question.and you just have to MULTIPLE it. | |
| 9. |
Name the two physical quantities which can be obtained from VT graph |
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Answer» please friend MARK me brainlistExplanation:Two PHYSICAL quantities which can be obtained fr velocity-time graph are DISPLACEMENT and ACCELERATION. The difference between the initial and final position of an OBJECT is called displacement. |
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| 10. |
A uniform field E is parallel to axis of a hollow hemisphere of radius |
| Answer» HII Mate Here is your answer ☺️Explanation:see this picturepls FOLLOW me and MARK me as BRAINLIST plzz | |
| 11. |
d) Most of the energy resources directly or indirectly are derived from the energy of Sun. Which form of energy is derived from the energy of Earth? |
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Answer» the LIGHT energy and water energy is derived PLEASE mark me as BRAINLIEST |
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| 12. |
CAN SOMEONE HELP ME WITH THESE QUESTIONS |
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Answer» a=5 b=2c=10Explanation:in the C QUESTION the last resistor must be 3 ohms not 2 ohms.legends like me are ALWAYS ready to HELP PEOPLE |
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| 14. |
Page A person has to go 5om due south 40m due west and 20 m due north to reach his destination displacement of the person is 1. 150m 2. 110m 3. 50m 4. 20m |
| Answer» 90 m is the ANSWER PLEASE MARK me as BRANLIEST answer | |
| 15. |
Pls answer thank you vey much |
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Answer» yes bro I am not ABLE to answer please TELL me another I am sorry bro I am really really sorry |
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| 16. |
List two sources of magnetic fields. |
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Answer» iend ! ♠⚜Here's your ANSWER : > The TWO sources of magnetic field are : CURRENT CARRYING CONDUCTORS (or wire) Permanent magnets / electromagnets._________________________Thank you ! ☺Doubts are most welcome :) |
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| 17. |
Electric field due to a point charge explain it with diagram. |
| Answer» EXPLANATION:FORMULA for ELECTRIC FIELD is kq/r^2 | |
| 18. |
What is fundamental units?class 11 |
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Answer» tion:The UNITS of fundamental physical QUANTITIES are called fundamental units. ... system, MASS, LENGTH and Time expressed in KILOGRAM, metre and second respectively are fundamental units. |
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| 19. |
Steering wheel has a radius of 50cm.two for each of 20N act the end of steering wheel .draw the diagram of the arrangement and find the moment of the force |
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Answer» IF HELPS PLZ PLZ ADD IT AS BRAINLIESTExplanation:Given that DIAMETER of 0.5 m wheel for which we are applying a FORCE of 5 N. We know that moment of force is given by r×FNow there are two forces and from right-hand thumb rule their moments will get added Hencemoment=0.25×5+0.25×5=2.5N−m. HENCE we have a magnitude of 2.5Nm.hope it helps!! |
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| 20. |
4kg 6kg blocks at distance between is 20m . block moves towards each other the position where they meet is |
| Answer» | |
| 21. |
1). The resistance whose V - I graph is given below is 052010 15I Campere(a)C(6)non cilin(c) 20 |
| Answer» SEE ATTACHMENT for ANSWEREXPLANATION:PLEASE THANK me | |
| 22. |
Solve this by using binomial theorem (399)^⁴ and (203)^-³ ? |
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Answer» 399⁴ & (203)³ To FIND : SOLVE using binomial THEOREM Solution: binomial theorem : k = 0 to n 399⁴= (400 - 1)⁴= ⁴C₄400⁴(-1)⁰ + ⁴C₁400³(-1) + ⁴C₂400²(-1)² + ⁴C₃400¹(-1)³ + ⁴C₄400⁰(-1)⁴= 25600000000 - 256000000 + 960000 - 1600 + 1= 25344958401399⁴= 25344958401(203)³ = (200 + 3)³= ³C₀200³(3)⁰ + ³C₁200²(3)¹ + ³C₂200¹(3)² + ³C₃200⁰(3)³= 8000000 + 360000 + 5400 + 27= 8365427(203)³ = 8365427 Learn more:The first three TERMS in the binomial expansion of ( ) n x y + are 1, 56 ...brainly.in/question/13197893evaluate (2+√3)^7 + (2 - √3)^7 by binomial theorembrainly.in/question/5256736Use binomial theorem to expand (2+X)5 in ascending powers of x ...brainly.in/question/11212431 |
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| 23. |
6. A pendulum completes 2 oscillations in 5 s. (a) What is its time period ? (b) If g = 9.8 ms, findits length.Ans. (a) 2.5 s, (b) 1.55 m |
| Answer» TION:From UNITARY method if 2 OSCILLATION COMPLETE in 5 sec then 1 oscillation complete in 5/2 = 2.5 s | |
| 24. |
❤❤❤❤plzz answer the question |
| Answer» ANSWER in ATTACHMENT. BRAINLIEST PLEASE | |
| 25. |
an object starts its Motion from rest attains 50 metre per second speed in 10 seconds draw beauty graph from the graph and calculate displacement and acceleration |
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| 26. |
Characteristics of Sound. 1. Define the following terms for a wave. Write their symbols and Sl units also:(0) Wavelength (ii) Frequency (iii) Time period |
| Answer» VIBRATION... ............... | |
| 27. |
95 kg halfback makes a turn on the football field. The halfback sweeps out a path that is a portion of a circle with a radius of 12 meters. The halfback makes a quarter of a turn around the circle in 2.1 seconds. Determine the speed, acceleration and net force acting upon the halfback? |
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Answer» FYIfixity to-do straight-up FORGOT |
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| 28. |
B. The dimensional formula for torque is identical to:(A) kinetic energy(B) pressure energy(C) momentum of force(D) All of these |
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| 29. |
ABCD is a square ,AC=OA=3units. find the co_ordinates ofB andC |
| Answer» AL DIGITAL FINANCIAL TOOTHPICK | |
| 30. |
A body is moving from rest at acceleration with4 m Per sec .find It s velocity after 4 second |
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Answer» u = 0A = 4m/s^2t = 4 secv=?PROCEDURE:-USING 1st KINETIC EQUATION ;v = u + a*tv = 0 + 4*4V = 16m/s |
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| 31. |
What is the examples of polarization of light |
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Answer» Common examples of SURFACES that REFLECT polarized light are undisturbed water, glass, sheet plastics, and highways... HOPE this HELPS U ✨✌ |
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| 32. |
Show the position of an object described as 15 m, 45° north of west, on a graph paper. |
| Answer» EXPLANATION:it is a GRAPH PAPER it can be DESCRIBE in that WAY on graph | |
| 33. |
Can a quantity have different dimensions in a different system of units? class 11 |
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Answer» tion:HLW MATE HERE IS YOUR CORRECT ANSWER....yes a quantity have different dimensions in different system of units . No,because in different system of units doesn't change the quantity but it only CHANGES the NUMERICAL value. For example,1 newton= 107dyne. Dimensions REMAIN same i.e [M1LT-2].I HOPE IT HELPS U A LOT |
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| 34. |
Find the moles of sulphur in k2so4.al3(so4)3.24h20 |
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Answer» oreign FICTION |
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| 35. |
Figure shows the displacement time graph of a body.what is the ratio of the speed in the first second and that in the next two seconds . answer 2:1 ana chahiye |
| Answer» RECT answer for this question is 2:1 .Explanation :We know that if we are given with the graph of displacement vs time for a moving body , then the slope of this CURVE at any point will give the speed of the body at that time .So , in this case for time period 0-1 sec , the slope or the speed in this time period is : = = = 30 m/sAnd for the time period 1-3 sec i.e. for the NEXT two sec we have the slope or the speed for this time period is : = = = 15 m/s Now the ratio of the speeds in the 1ST 2nd to that in the next two seconds is : = =2 Hence , the ratio is 2:1 | |
| 36. |
If the air between two magnetic poles is replaced with water then1) the force between two poles does notchange2) the force between two poles increases3) the force between two poles decreases4) both 1 and 2 |
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| 37. |
Deduce the dimensional formulae for the following physical quantities: a. Gravitational constant b. Power c. Stress d. Surface tension |
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Answer» tion:Universal constant of gravitation G Gravitational Force =G R 2 m 1 m 2 ⇒G= m 1 m 2 F.r 2 [G]= [M][M][MLT −2 ][L 2 ] [G]=M −1 L 3 T −2 2) SURFACE tension S S= lengthForce ⇒ [L][MLT −2 ] [S]=[ML 0 T −2 ]3) Thermal CONDUCTIVITY KΔtΔQ =KA ΔxΔT ⇒K=− ΔtΔQ × ΔTΔx × A1 K= timeenergy × temperaturelength × Area1 = TML 2 T −2 × KL × L 2 1 [K]=[MLT −3 K −1 ]4) coefficient of viscosity nn= A(dv/dx)F ⇒ [L 2 ][LT −1 ]/[L][MLT −2 ] [n]=ML −1 T −1 |
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| 38. |
What happens to a moving object when there exists zero friction acting on the object. I WILL MARK AS BRAINLEST |
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Answer» ❣Motion of an OBJECT was first described by Galileo with the EXAMPLE or rolling marbles on an inclined PLANE. Hope it Helps you !! MARK it as Brainliest Answer plz !! |
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| 39. |
- Write three points of differences betweenthree zones of the flame ? |
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Answer» there are THREE ZONES of flamesdark zoneluminous zonenon LUMINOUS ZONE |
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| 40. |
Three resistances 3ohm , 6 ohm and 7 ohm are connected in series across a potential difference of 48v . The potential difference across 7 ohm resistance is |
| Answer» BHAI SORRY BAHOT BADE wala sorry lakin point KI bahot need h | |
| 41. |
Which of the following statements are true about resistivity? A.The resistivity of metal is more than that of insulators. B.The insulators and metals have same resistivity. C.Metals can carry electricity more easily than insulators. D.The resistivity of insulators is more than that of metals. |
| Answer» 3 RD POINT STATEMENT is TRUE | |
| 42. |
Define redioactivity ?......... |
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Answer» the property POSSESSED by some elements (such as uranium) or isotopes (such as carbon 14) of spontaneously EMITTING energetic particles (such as electrons or ALPHA particles) by the disintegration of their ATOMIC nuclei also : the rays emitted.@RAMAN Yadav❤️#stay happy ♥️☺️ |
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| 43. |
A freely suspended magnet always comes to rest in north-south direction. This is due to influence of1) Earth magnetic field2) Sun magnetic field3) Its own magnetic field4) All the above |
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Answer» agnetic fieldExplanation:it does not have an EXPLANATION |
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| 44. |
If sinФ +cosФ= √2 cosФ, (Ф≠90°) then value of tan is ? |
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Answer» To Find : Solution : Method 1 Both SIDE divided by COS ØMethod 2 Squaring both SIDES |
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| 45. |
Determine the centripetal force acting upon a 40 kg child who makes 10 revolutions around the Cliffhanger in 29.3 seconds. the radius of the barrel is 2.90metres? |
| Answer» TION:CONTROVERSIAL gyi6 BEAUTIFUL BOYCOTT | |
| 46. |
Write three point of differences between the three zones of the flame ? |
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Answer» Hey friend plzz mark as brainliestExplanation:the outermost zone is the HOTTEST among all ZONES and is blue in colour. this is due to complete combustion. the middle zone of flame is moderately hot and is yellow in colour ,PARTIAL combustion of fuel takes PLACE here. the innermost zone of flame is LEAST hot and is black in colour |
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| 48. |
The potential at a point is 20V . Calculate the amount of work done to bring a charge of 0.5 C from infinity to this point |
| Answer» SEE the ATTACHMENT EXPLANATION: | |
| 49. |
State precautions to be taken by students to get accurate results when they are experimenting on the ohms law circuit |
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Answer» We must FOLLOW the instructions carefully during the experiment.Do not connect (or PLACE) the multimeter (leads/pins at the end of wires) directly to the ends of battery, when it is in CURRENT mode. ...We must estimate approximately the RANGE for resistances being used. ...Connect the wires neatly and TIGHTLY. |
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| 50. |
Why is average velocity = ( u + v )/2 for uniform acceleration? |
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Answer» y is the rate at which an OBJECT moves. It has both a magnitude (a value) and a direction. When a velocity is changing as a result of a constant acceleration, the average velocity can be FOUND by adding the initial and final velocities, and dividing by 2. The unit for velocity is meters PER SECOND (m/s). Note that this formula applies for constant acceleration only.vavg = average velocity (m/s)vi = the initial velocity (m/s)vf = the final velocity (m/s)PLEASE MARK AS BRAINLIEST!! |
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