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.
| 2. |
Find an expression of electric field at a point on the equatorial plane of a dipole of length 2a |
|
Answer» the expression of ELECTRIC field at a POINT on the EQUATORIAL plane E = 1/4π€ × P/ r^3 |
|
| 3. |
No of electrons in one coulumb ...pls explain dont juts write the answer I also know that 1C=6.25*10^18 but how |
|
Answer» CHARGE on 1 electron is 1.6×10^-19 C so 1 COULOMB CONTAINS 1/1.6×10-19 i.e 6.25*10^18 mark me BRANLIEST thanks |
|
| 4. |
Plz tell me the ans for this q based on river crossing |
|
Answer» Your answer is here MIGHT it may be helpgul YO you :) answer is 80 and 40 |
|
| 5. |
A cylist takes 5ounds of a circular track of diameter 196n in 25 minutes .find his speed |
|
Answer» Diameter of the circle = 196 m So, radius of the circle = 196/2 = 98 m Distance TRAVELED by the cyclist = 5 x circumference of the circle (SINCE he traveled 5 rounds). Distance traveled by the cyclist = 5 (2πr) = 5 * 2 * 22/7 * 98 = 3080 m Time taken by him = 25 min = 25*60 = 1500 s Speed of the cyclist = Distance/time = 3080/1500 = 2.05333 m/s The speed of the cyclist = 2.0533 m/s Hope this helps you. |
|
| 6. |
Solve it on your notebook and send me pic |
|
Answer» To SOLVE this question, a basic KNOWLEDGE on "Solving a LINEAR Differential equation" is required. Please go through, your notes on differential EQUATIONS if necessary. The explanation is in the attachment below, starting from 'given' Hope it helps |
|
| 7. |
A projectile thrown from hundred metre high tower with speed 50 M per second making an angle 37 degree with horizontal find range when t=1secfind:1 ux and it2 find horizontal range at t=1,3,5,7 sec3 verticle displacement at t=1,3,5,7 sec4 net displacement |
| Answer» | |
| 8. |
Solve this question ............ |
|
Answer» What is the QUESTION |
|
| 9. |
Plzz answers with solutions |
|
Answer» ANSWER |
|
| 10. |
what is the commercial unit of electric energy? which uses more energy_a 250w TV set in 1 hour or a 1200w electric iron in 10 minutes and how? |
|
Answer» Kilowattt- HOUR. Energy for TV set is |
|
| 11. |
a bike rider rides 700m north 300m east 400m north 600m West 1200m south 300m east and finally 100 m north. draw the path of motion of the bike rider what distance did he cover? what was his displacement? |
|
Answer» Distance-700+300+400+600+1200+300+100=3600 |
|
| 12. |
Define star connection |
|
Answer» A CONNECTION used in a POLYPHASE electrical device or system of devices in which the WINDINGS each have one end CONNECTED to a common junction, the star point, and the other end to a SEPARATE terminal |
|
| 13. |
When acetic acid reacts with ethyl alcohol, we add conc. H₂SO₄ it acts as..........and theprocess is called....................... [ ]a) Oxidizing agent, saponificationb) Dehydrating agent, esterificationc) Reducing agent, Esterificationd) Acid & esterification |
|
Answer» This reaction is termed as esterification reaction.Ethanoic acid reacts with ethanol in the presence of concentrated sulphuric acid as a catalyst to produce the ester, ethyl ethanoate. The reaction is SLOW and reversible. To reduce the chances of the reverse reaction HAPPENING, the ester is distilled off as soon as it is formed. |
|
| 14. |
straight distance between a hotel and railway station is 10 km but circular path is followed by taxi cover in 23km in 28 min find average velocity and average speed |
|
Answer» AVERAGE speed=total distance/TIME=23/28 km/min. total displacement=10km. so time TAKEN WI |
|
| 15. |
Plzz help me solve this problem. ..on biot savarr law.. |
|
Answer» ANS. Apply the EQUATION B INSIDE = munot×i/4pi×r minot= 4pi×10power -7 Tm2per ampere and R=2/100m. i is current |
|
| 16. |
Combustion of hydrocarbon is generally accompanied by the evolution ofa) Heatb) Lightc) both heat and light d) Electric current. |
| Answer» | |
| 17. |
Which one of the following hydrocarbon can show isomerism? [ ]a) C₂H₄ b) C₂H₆ c) C₃H₈d. C₄H₁₀ |
| Answer» | |
| 18. |
What is instantaneous force? |
|
Answer» The NET force acting on a body at a particular instance of TIME, is CALLED the INSTANTANEOUS force... |
|
| 19. |
Please solve 47 question and give the answer and explain it quickly |
| Answer» | |
| 20. |
length of minute hand of a clock is 4.5cm find average velocity of minute hand betweeen 6AM to 6.3O AM |
|
Answer» 1 MIN = 4.5cm 6am to 6:30=30×4.5 135.0 |
|
| 21. |
Acetic acid, when dissolved in water, it dissociates into ions reversibly because it is a:[ ]a) Weak acidb) strong acidc) weak base d) strong base |
|
Answer» CH3COOH is WEAK acid. so OPTION a) is CORRECT. |
|
| 22. |
The suffix used for naming an aldehyde is [ ]a) -ol b) -al c) -one d) -ene |
|
Answer» CORRECT option is B as because for EG H2C=O is a formaldehyde and it's IUPAC NAME is methanal hope it will help you |
|
| 23. |
Which of the following solution of acetic acid in water can be used as preservative? [ ]a) 5-10%b) 10-15%c) 15-20% d) 100% |
| Answer» | |
| 24. |
In periodic table (modern periodic table),to which group,does the carbon belongs to -------------choose the correct answer from the bracket.(exothermic,I V A,gasohole,109°28') |
| Answer» | |
| 25. |
The first member of homologous series among alkynes is ___________.choose the correct answer from the bracket.(substitution reactions,three,ethene,acetylene/ethyne,1-propene,alcohol) |
| Answer» ETHYNE is UR CORRECT ANSWER DEAR | |
| 26. |
hey resistivy = 1.5× 10 raise to minus 8 and area of cross section = 20 × 10 raise to minus 4 find the length of the wire required to make 20 Ohm |
|
Answer» R = p_l_ A 20 = -8 × _l_ -4 20 = 2 × l l = 10 m |
|
| 27. |
If heat produced is 200 joule with resistance 20 ohm for 10 seconds find voltage and current |
|
Answer» HEAT produced=200Joules r=20ohm t=10sec hope this will HELP you. |
|
| 28. |
A sweet odour substance formed by the reaction of an alcohol and a carboxylic acid is ___.choose the correct answer from the brackets.(hydrogen,ester,vinegar,ethanol,unsaturated hydrocarbans) |
|
Answer» I THINK the ANSWER is UNSATURATED HYDROCARBONS |
|
| 29. |
A compound which is basic constituent of many cough syrups __________ .choose the correct answer from the brackets.(hydrogen,ester,vinegar,ethanol,unsaturated hydrocarbans) |
| Answer» ETHANOL is the BASIC constotuent | |
| 30. |
Very dilute solution of ethanoic acid ____________.choose the correct answer from the brackets.(hydrogen,ester,vinegar,ethanol,unsaturated hydrocarbans) |
|
Answer» ETHANOL is the answer, HOPE you UNDERSTOOD |
|
| 31. |
Friction is nscesary evil(with advantage or disadvantage) |
| Answer» SE the above ANSWER and LEAVE a RESPONSE | |
| 32. |
Write the working principal of a starter generator |
|
Answer» It works BASED on principle of faraday law of electromagnetic induction. The faradays law states that WHENEVER a conductor is placed in a varying magnetic field, EMF is induced and this induced EMF is equal to the rate of change of FLUX linkages. ... So the important ELEMENTS of a generator are: Magnetic field |
|
| 33. |
What is formula of maximum static friction |
|
Answer» Answer: The force that was applied was exactly the right amount to overcome STATIC friction, so it is equal to Fsmax. On a FLAT surface, the normal force on an object is η = MG. The coefficient of static friction can be FOUND by REARRANGING the formula for the maximum force of static friction: μs = 0.6020... |
|
| 34. |
if a 20 Newton of force is applied to a object of 4 Kg if an object moves with mass 2 metre per second square what is the magnitude of applied force |
|
Answer» Here is your ANSWER... |
|
| 35. |
which would require a greater force acceleration a 2 kg mass at 5 M per square second on a 4 kg mass at 2 metre per second square |
|
Answer» AS |
|
| 37. |
Find total current flowing through the circuit. |
| Answer» FIRST ADD the voltage and resistance(series) and also and insert OM's LAW | |
| 38. |
Exples for static friction |
|
Answer» The REASON is static friction. Friction, in general, is a force that makes it HARDER for TWO OBJECTS to slide ALONGSIDE one another. Static friction is the friction that exists between a stationary object and the surface on which it's resting. Once the objects have already started moving, kinetic friction takes over. |
|
| 39. |
Find the area of triangle formed by the tips of Vector A and Vector B and Vector C. The values of vectors A,B,C are given in the picture |
|
Answer» FIND S by USING a + B + c by 2 now calculate using HERONS formulae make me brainliest |
|
| 41. |
Why we consider small elemental volume for integration? |
|
Answer» So that the error in it will be less. |
|
| 42. |
Derive motion of equations all threev = u + ats = ut + ½ at²2as = v² - u² |
|
Answer» HEY!! REFER TO THE ATTACHMENT HOPE IT HELPS |
|
| 43. |
An electric dipole is formed by 5 micro coulomb and -5 micro coulomb at for MM distance. Calculate the dipole moment |
|
Answer» servicingP Devi Explanation: |
|
| 44. |
If A Vector = B Vector - C vector then the angle between Vector A and Vector B?? |
| Answer» | |
| 45. |
Why is electric field inversely proportional to square of distance? |
| Answer» | |
| 46. |
Why is current-carrying wire normally not electrically charged? |
|
Answer» The wire carrying current is ELECTRICALLY neutral because the net CHARGE in the conductor is zero. It is carrying current DUE to the MOTION of charged PARTICLES(electrons) but not due to add or loss of charge which would have made it charged. |
|
| 47. |
Why is electric field due to an infinte sheet independent of distance? |
| Answer» | |
| 48. |
the sun's angular diameter is measured to be 1920''.The distance D of the sun from earth is 1.496×10^11m.what is the diameter of the sun? |
|
Answer» घनत्व का सी जी एस मात्रक क्या है |
|
| 49. |
when a car driver travelling at an initial velocity of 10 m per sec applys break and drink the car to rest in five seconds final velocity become a 0 than final the acceleration |
|
Answer» A=v-u/t |
|
| 50. |
Why can capacitor connect in star at high voltage side? |
|
Answer» I do not UNDERSTAND your QUESTION |
|