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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. |
What is the principal of electric motor |
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Answer» Explanation: The PRINCIPLE of an electric motor is based on the MAGNETIC effect of electric current. A current-carrying loop EXPERIENCES a force and ROTATES when placed in a magnetic field. The DIRECTION of rotation of the loop is according to the Fleming's left-hand rule. |
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| 2. |
A man wants to use a lens for watch repair .which lens has he to select . where will the object be placed in front of a lens.what is the nature ,position and size of the image in this case |
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| 3. |
Exact definition of distance |
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Answer» Distance is an amount of space between things. ... The noun distance usually refers to PHYSICAL space in between TWO objects, like the distance between your parking spot and the entrance to the mall. It can also mean an interval in time, like a distance of two YEARS since you GRADUATED. |
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| 4. |
V) Given v, = 5i+2j and v2 = ai-6j areperpendicular to each other, determine thevalue of a.Ans:12upon 5 |
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Answer» (5i+2j )(ai-6j )=0 5a - 12=0 a = 12/5 |
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| 5. |
What is the magnitude of the charge on an oxygen atom |
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Answer» as in periodic table its ATOM is 8 |
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| 6. |
If A, B, C Are magnitude-A=15and 17unit and A+B=C then find the angle between A and B |
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Answer» Answer: 35. One mole of IDEAL gas EXPANDS isother- mally to double its volume at 27°C. Then, the work DONE by the gas is nearly |
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| 7. |
A prisoner is told "If you tell a lie we will hang you; if you tell the truth we will shoot you." What can he say to save himself? |
Answer» ANSWER:"you will hang me"Explanation: If they hang him, then the statement was true and they COULD only hang him for telling a lie. If they shoot him, then it MAKES the statement a lie and they were only to shoot him for telling the truth. An ALTERNATE solution is to say, “You will not shoot me,” leading to the same quandary for the killers. |
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| 8. |
What is horijontal projectile |
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Answer» when an object is THROWN from an angle theta except 90 degree then it FOLLOW a trajectory which is CALLED as projectile . the horizontally thrown ball and BULLET fired from rifle held horizontal projectile . |
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| 9. |
Write any three instruments that you know |
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Answer» guitar, sitar,drum, violin |
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| 10. |
What is angular projection? and its all derivations |
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Answer» Answer: When the body is THROWN with india VELOCITY at an ANGLE to the horizontal direction. derivation is above please MARK as brainliest |
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| 11. |
A particle moves along X-axis with speed6 m/s for the first half distance of a journey and thesecond half distance with a speed 3 m/s. Theaverage speed in the total journey is |
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Answer» Answer: 4 m/s Explanation: Let TOTAL distance of journey by S Time TAKEN for first half journey T1 = Distance / Speed = (S/2) / 6 = S/12 Time taken for SECOND half journey t2 = Distance / Speed = (S/2) / 3 = S/6 Average speed = Total distance / Total time = S / (t1 + t2) = S / (S/12 + S/6) = S / [S(1/12 + 1/6)] = 1 / (1/12 + 1/6) = 1 / (1/12 + 2/12) = 1 / (3/12) = 12 / 3 = 4 m/s |
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| 12. |
A particle starts with certain initial velocity anduniform acceleration, covers a distance of 12 in infirst 3 seconds and a distance of 30 m in next3 seconds. The acceleration of particle is(1) 2 m/s(2) 1 m/s(3) 3 m/s2(4) 1.5 m/s2 |
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Answer» Answer: 2m/s Explanation: u=12/3=4m/s,v=30/3m/s=10m/s. a=v-u/t=10-4/3=2m/s |
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| 13. |
Can a body move in balanced force discuss |
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Answer» Answer: A BODY can't move with balance FORCE .body move when a unbalance force apply |
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| 14. |
A gun of mass M fires a bullet of mass m with a kinetic energy E.The velocity of recoil of gun is |
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Answer» Given that, Mass of gun = M Mass of bullet = m Kinetic ENERGY of bullet = E We need to calculate the velocity of gun Using conservation of MOMENTUM
We need to calculate the RECOIL velocity of gun Using formula of kinetic energy Put the VALUE into the formula Now, put the value of v₂ in equation (I)
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| 15. |
The power of two lens are 2.5D and -5D. Mention the nature of the lens |
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Answer» ⏩Hey mate❤ ➡If The power of lens 2.5 D so, it will be Converging lens ➡If the power of lens -5D so, it will be DIVERGING lens ⏩Hopes its helps u ➡Follow me @Abhi❤❤ |
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| 16. |
A particle is moving in xy plane with a constant acceleration with1.5m/square that makes an angle of 37degree with x axis ay time 0 seconds the particle is at origine and its velocity is 8m/s along x axis find velocity and position of particle at time =4 seconds |
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| 17. |
The power of lens is +2.5d what kind of lens is it and what is it focal length |
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| 18. |
If the measured values of two quantities are A 1+_ AB and B+_B,A and B being themean absulate errors.what is the maximum possible error in A+_B? SHOW THAT if z=a/b |
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Answer» No answer |
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| 19. |
State the electromagnetic phenomena useful for the electromagnetic energy conversion in rotating electric machines |
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Answer» Answer: 35. ONE mole of ideal gas expands isother- mally to DOUBLE its VOLUME at 27°C. Then, the work done by the gas is NEARLY |
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| 20. |
Define Ohm's law.... |
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Answer» Answer: OHM's law state that electric CURRENT is directly PROPORTIONAL to voltage and inversely proportional ResistanceHOPE THIS HELPS YOU❣️❣️✔️✔️✌️✌️ |
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| 21. |
Five instruments used to measure time |
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Answer» HEYYY.... some of the INSTRUMENTS INCLUDES - 1. clock 2. hourglass 3. sundial. ETC... |
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| 22. |
From the a-x graph. Find velocity of body when displacement is 100 m.Assume initial velocity as zero. |
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| 25. |
Does a current flowing in a wire always give rise to a magnetic field around it? |
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| 26. |
(6) Express 0.000003 m as a power of 10. |
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Answer» 3×10^-6 h m n fjkhdfujhhh j j |
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| 27. |
Working of generator |
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Answer» Answer: Explanation: Generators are basically coils of electric conductors, normally copper wire, that are tightly wound onto a metal core and are mounted to turn around inside an EXHIBIT of large magnets. An electric conductor moves through a magnetic field, the magnetism will interface with the electrons in the conductor to INDUCE a flow of electrical current inside it. The conductor coil and its core are CALLED the armature, connecting the armature to the shaft of a mechanical power source, for example an motor, the copper conductor can turn at exceptionally increased speed over the magnetic field. The point when the generator armature FIRST STARTS to turn, then there is a weak magnetic field in the iron pole shoes. As the armature turns, it starts to raise voltage. Some of this voltage is making on the field windings through the generator regulator. This impressed voltage builds up stronger winding current, raises the strength of the magnetic field. The expanded field produces more voltage in the armature. This, in turn, make more current in the field windings, with a resultant higher armature voltage. At this time the signs of the shoes depended on the direction of flow of current in the field winding. The opposite signs will give current to flow in wrong direction. |
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| 28. |
If velocity v of a particle moving on a straight lineas a function of time t is given as v = 5-t (m/s)then the distance covered by the particle in first10 s is(1) 5 m(2) 15 m(3) 25 m(4) 50 m |
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Answer» Answer:25 m Explanation: Since the question is asking for DISTANCE So FIRST TAKE out the maximum TIME by putting v=0 t comes out to be 5S Now integrate the equation of velocity to get equation for displacement which comes out to be x = 5t -t^2/2 Now put 5 in the equation this will give displacement in 5s.For distance in next 5s multiply the result by two. Thus answer comes out to be 25. Solve it and if you have any doubt feel free to ask. |
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| 29. |
If x, y, z be the distances described by a particle during the p", qh and rith second respectively, prove that(q-rx) + (r-py) + (p -qz) = 0 |
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Answer» fiyvhbubugibihigogigirt GJG |
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| 30. |
How many seconds are three in two days |
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Answer» 172800 SECONDS are there in 2 days. 100%correct. ✔✔✔✔✔✔ Hope this will HELP you. MARK me BRAINLIEST. |
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| 31. |
Express 0.000003 as a power of 10? |
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Answer» Explanation: 3/(10)^6 or 3X10^-6 mark it as BRAINLIEST ANSWER... follow me... |
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| 32. |
Real phenomena of geo physics |
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Answer» Answer: Explanation: Geophysics is a subject of natural science CONCERNED with the physical processes and physical properties of the Earth and its surrounding space environment, and the use of quantitative methods for their ANALYSIS. The term geophysics sometimes refers only to the geological applications: Earth's shape; its gravitational and magnetic fields; its internal structure and composition; its dynamics and their SURFACE EXPRESSION in plate tectonics, the generation of magmas, volcanism and rock formation. |
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| 33. |
define surface tension derive a relation between surface tension and surface energy what is the unit of surface tension |
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Answer» Explanation: Surface energy is DEFINED as the work done per UNIT area to increase the free surface area, under isothermal CONDITION. ∴Surfacee≠r≥y=Work doneFree surface area=WdA=T(2Ldx)2Ldx=T. ∴ Surface energy is equal to surface TENSION. |
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| 34. |
The point of application of a forceF = (6j+8k) is displaced from A(1,-1,2) to B(-1,1,2).Then the work done is |
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Answer» Explanation: the DISPLACEMENT VECTOR dr=( -i+j+2k)-(i-j+2k) dr= -i+j+2k-i+j-2k dr= -2i+2j the work done w =F.dr w= (6j+8k).(-2i+2j) w=12 unit. where we have used displacement vector = final POSITION vector- initial position vector and i.j = j.k =k.i =0 |
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| 35. |
acceleration time graph for a particle is given in the figure if it starts motion at t=o, distance travelled in 3 seconds will be |
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| 36. |
When a car is driven too fast around a curve it skids outwards. How woulda passenger sitting inside explain the car’s motion? How would an observerstanding on a road explain the event? |
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Answer» A monochromatic ray of light strike the water (n = 4/3) surface in a cylindrical vessel at angle of incidence 53º. Depth ofwater is 36 cm. After striking the water surface, how long will the light TAKE to reach the bottom of the vessel? [Angles of the most popular Pythagorean triangleof sides in the ratio 3:4:5 are NEARLY 37°,53° and 90°] |
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| 37. |
find the resistance of a resistor have following color codes.......green , yellow, black and golden?....... please don't spame |
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Answer» JUST JOKING IN THE PREVIOUS ANSWER!! answer is 4ohms and 20%tolerance and it is correct
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| 38. |
R=?Where R=A+Bangle between the two vectors is 60°.Options are in the pic. Option A is correct, tell me why option D is wrong? |
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Answer» ................ because |
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| 39. |
What is impulse ... |
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Answer» it is ALSO the urge to do something (especially wrong-I HOPE you are understanding to where i am "POINTING") |
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| 40. |
28. The acceleration-time graph for a particle movingalong x-axis is shown in figure. If the initial velocityof particle is -5 m/s, the velocity at t = 8 s isa (m/s)10tIt(s)2 4 6-107-(1) +15 m/s(2) +20 m/s(3) -15 m/s(4) -20 m/s29. A body falling from a vertical height of 10 m pierces |
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Answer» I THINK u have MISSED the GRAPH plz post again with the graph |
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| 41. |
A body of mass 40 kg is suspended with the help of two strings as shown in the given fig. find tension T1 and T2 |
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| 42. |
The angle of incidence is 43 °and the light is refracted as shown measure the angle of refraction |
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Answer» Answer: 43° Explanation: ANGLE of refeaction _i=r |
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| 43. |
Dimensional formula for magnetic strength |
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Answer» Explanation: DIMENSIONAL FORMULA of MAGNETIC field INTENSITY (H) is A/L mark me as brainliest |
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| 44. |
A charge of 5000 coloumb flows through a conductor for 2 hour and 30 minutes find themagnitude of current flowing through the conductor |
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Answer» Answer: CURRENT ( i ) = 0.55 Ampere Explanation: ★ CURRENT ELECTRICITY ★ GIVEN ; ★ CHARGE ( Q ) = 5000 C ★ TIME ( T ) = 2hr 30 min. » CURRENT ( i ) = ??? _________WE KNOW THAT ; _______ ★ CURRENT ( i ) = CHARGE (Q) / TIME (T) » i = Q / T » i = 5000 / 2 hour 30 min. » i = 5000 / 150 min. » i = 5000 / 150 × 60 seconds » i = 5000 / 9000 ★ » i = 0.55 Ampere « ★ ________________________________________ ANSWER :- Current FLOWING in Time " t " at charge of 5000 COULOMB is ; ★ i = 0.55 Ampere ★ |
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| 45. |
The resultant of two forces has magnitude 20N. One of the forces is of magnitude 20.3Nand makes an angle of 30° with the resultant.Then what is the magnitude of the other force ?a) 10 N b)20 N c) 20.2 N d) 10/3 N |
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Answer» Answer: 20 N Explanation: Let the other Force be of magnitude X and the angle it MAKES with RESULTANT be θ. Now, the components of the TWO vectors along the resultant should be of magnitude of the resultant and the COMPONENT of these two vectors resolved in the direction perpendicular to resultant should be zero. |
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| 46. |
❤❤❤❤❤❤Question from Resonance SHEETJEE PROBLEMS Explain broadly... ONLY FOR PHYSICS NEWTON⚠Spammer stay away⚠@Zia Dilliwali |
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Answer» thanks for the QUESTION ....✔ Which BOOK is this question in? |
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| 47. |
Please jaldi full solve krna hai |
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Answer» CARNOT ENGINE OPTION A Explanation: ♣ THERMODYNAMICS ♥ ★ GIVEN ; ★ » Temperature of Source ( T¹ ) = 427°C ≈ 700 Kelvin ★» Temperature of Sink ( T² ) = 77° C ≈ 350 Kelvin ★★ EFFICIENCY OF CARNOT ENGINE ( ẞ ) = ?? _________ [ BY USING FORMULA ] __________ ★ ẞ = [ 1 - 350 / 700 ] » ẞ = [ 700 - 350 / 700 ] » ẞ = [ 350 / 700 ] = ( 1 / 2 ) ★ →[ %ẞ = 1 / 2 × 100 = 50 % ] ← ★ _________________________________________ ANSWER :- HENCE ,EFFICIENCY OF HEAT ENGINE IS ; ♣ ẞ = 50 % ♣ |
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| 48. |
In the diagram shown, the displacement of particles is giyen as a function of time.The particle A is moving under constant velocity of 9 m/s. The particle B. is movingunder variable acceleration. Find the average.velocity of B from.t=0.to.t= 6s." |
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Answer» Explanation: In the diagram shown, the displacement of particles is GIYEN as a function of time. The particle A is moving under CONSTANT VELOCITY of 9 m/s. The particle B. is moving under VARIABLE acceleration. Find the average.velocity of B from.t=0.to.t= 6s." Ans:B2 |
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| 49. |
Please provide lab manual sollution for vernier callipers |
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