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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. |
In what way magnetic poles very different from electric charges |
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Answer» Answer: Like POLES repel, unlike poles attract, and the force is proportional to the inverse square of the DISTANCE between TWO poles. In what way are magnetic poles very different from electric charges? ... ... CHARGED particles in motion have both an electric FIELD and magnetic field associated with them. plz mark it as brainlist.. follow me..☺☺✌✌ |
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| 2. |
Calculate the acceleration of the bus during the first 10 seconds ?Give the unit .plz plz answer it =_= |
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Answer» Answer: 1.2 m/s2 is ACCELERATION |
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| 4. |
A cricket ball is thrown at a speed of 28 m/s in a direction 30° above thehorizontal. Calculate the maximum height attained and the time takenby the ball to return to the same level. |
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| 5. |
Easy way to learn all elements |
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Answer» Answer: write them in the correct order and then learn it in the MANNER which will SOUND EASY for U to learn and u will not forget |
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| 6. |
A write sign convention for spherical mirror |
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Answer» Answer: Sign is taken as – (NEGATIVE) from pole of a SPHERICAL mirror towards object along the principal AXIS. This MEANS sign is ALWAYS taken as – (negative) in front of a spherical mirror. |
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| 7. |
What's the easy method to learn mendelovs periodic table?? |
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| 8. |
A 10 mm long awl pin is placed vertically in front of a concave mirror. A 5 mm long image of the awl pin is formed at 30 cm in front of the mirror. What is the focal length of te mirror ? |
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Answer» Answer: 60 Explanation: a/c question U GOT first magnifiaction =(-V/u=-1/2) then u should APPLY magnifiaction =-v/u...where v given=30..from here u got u=-60.then apply MIRROR formula...1/v+1/u=1/f...where v=30and u=-60 |
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| 9. |
Why are we able to use nuclear energy for practical purposes?1 The reactions are controlled to regulate energy output.2 The reactions are uncontrolled for maximum energy output.3 All of the products are fed back into the reaction to keep it going. 4 All of the products are immediately removed to inhibit more reactions. |
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Answer» One of the reasons we should use more nuclear energy is that it produces high amounts of electricity WITHOUT damaging the environment and atmosphere. Nuclear POWER plants produce LESS pollution than MANY of our other current energy sources, including coal fire and NATURAL gas plants |
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| 10. |
Two resistances R1=(100+- 3) Q and R. (200+-4) are connected in series. What is their equivalent resistance? |
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Answer» Answer: 293 ohms Explanation: RESISTANCE in SERIES : R1+R2 100+-3+200+-4=293 |
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| 11. |
100 radians is equal to how much degree |
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Answer» 100× 180/π = 5729.57 DEGREE. |
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| 12. |
● State the equation linking acceleration ,change in velocity and time taken .PLZ PLZ ANSWER IT =_= |
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Answer» a=v2-v1/time TAKEN ...................... |
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| 13. |
Easy way to learn periodic table elements from 21 to 30 |
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Answer» Answer: 21- Scandium 22- Titanium 23- Vanadium 24- Chromium 25- Manganese 26- Iron 27- Cobalt 28- Nickel 29- Copper 30- Zinc Explanation: As you learnt the first 20 ELEMENTS, learn these 10 elements in the same PROCEDURE, you will get it. |
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| 14. |
What is easy way to learn mendelovs periodic table?? |
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Answer» in the GOOGLE you can FIND many RHYME to learn the comolete table |
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| 15. |
In the given network, find charge stored in eachcapacitor |
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| 16. |
A particle starts from origin at t=0 with a velocity of 1.01 m/s and moves along x-y plane with a constant accelerationof 2.0i+ 4.0 jms. Here i and j are wait vectors along x-axis and y-axis respectively. Ar what time will the- coordinate of the particle be 20 m2 |
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| 17. |
according to the formula H=i²Rt for the heat produced in a conductor due to the flow of current through it, HαR whereas according to the formula H=v²t/R,Hα1/R where the symbols have their usual meaning, explain the apparent contradiction |
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Answer» Answer: The heat produced in conducting WIRE is given by joules LAW as, H=I2Rt i ) The amount of heat produced in CURRENT conducting wire, is proportional to the square of the amount of current that is flowing through the circuit, when the ELECTRICAL resistance of the wire and the time of current FLOW is constant. ie H∝I2 (when R, t are constant) II) Heat generated due to the flow of current is proportional to the time of current flow, when the electrical resistance and amount of current flow is constant. ie H∝t (when I,R are constant) III) The amount of heat produced is proportional to the electrical resistance of the wire when the current in the circuit and the time of current flow is constant. ie H∝R (when I, t are constant) Explanation: mafk as brilliant |
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| 18. |
Radius of 50 cm having angular speed of 5 radian per sec having linear speed |
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Answer» Explanation: ------------------------------------------------- LINEAR speed = angular speed × radius ---------------------------------------------------Linear speed = 5 × 50 = 250 cm/sec ANS. |
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| 19. |
Solve it this question. |
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Answer» Answer: hope it HELPS you mark as brainliest |
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| 20. |
Describe the charactersicts of simple harmonic oscillator |
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Answer» Answer: These are BasicConditions andcharacteristics for a body to exhibit SHM : 1- A restoring force MUST act on the body. 2- Body must have acceleration in a direction opposite to the displacement and the acceleration must be directly PROPORTIONAL to displacement. ... 4- SHM is a TYPE of oscillatory motion. Hope it helpsMark As BRAINIEST |
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| 21. |
The direction of current is the same as that of the flow of electron explian with a circuit diagram |
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Answer» Answer: No ,your ASSERTION is wrong Explanation: The direction of current is always TAKEN as the direction opposite to the flow of ELECTRONS |
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| 22. |
Calculate the resistance of a copper wire of length 5 metre having radius as 5 mm (give the resistivity of copper is 1.68 into 10 to the power -8 ohm metre |
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Answer» R=rL/a Explanation: (1.68*10^-8*5)/((22/7)*(5*10^-3)^2=5.348*10^-6 |
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| 23. |
Three differences between boiling and evaporation |
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Answer» Answer: Evaporation occurs on the SURFACE of the liquid whereas boiling occurs at the entire LENGTH of liquid. ... Boiling occurs rapidly whereas evaporation occurs slowly. 3. Evaporation occurs at any temperature whereas boiling occurs at a specific temperature. 1, boiling can occurs everywhere, DEPENDING on the heat source. Whereas evaporation only takes place at surface of the liquid. 2, boiling requires CERTAIN temperature at certain pressure, and CONTINUOUS heating source, while evaporation works at any temperature and pressure. |
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| 24. |
Answer(ii) plz I really need it |
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Answer» Answer: = 10s Explanation :- The BUS was stationary during 30S and 40S -> 10s stationary ! |
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| 25. |
Three application of conversion of momentum |
Answer» ♡ DEAR *----* ✧༺♥༻✧✧༺♥༻✧✧༺♥༻✧ ANGULAR momentum suggests how huge this force or rather torque should be in order for the body to actually rotate in that direction. APPLICATION wise, angular momentum is used to ESTIMATE theangular velocity, moment of inertia, energy of a body, much like LINEAR momentum. ✧༺♥༻✧✧༺♥༻✧✧༺♥༻✧ ■baazHere ■FollowMe ■Thanks~ 'don't copy my style :p' MARK ME AS BRAINLIEST♡ |
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| 26. |
Voice of which of following is likely to have minimum frequency……………. (baby girl/a women) |
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| 27. |
What are the constituents of an atom according to J.J.thomson |
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Answer» Answer: as JJ thomson introduce the PLUMS pudding model aacording to him their was negatively CHARGED ELECTRON SURROUNDED by positively charged proton |
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| 28. |
A farmer moves along the boundary of a square field of side 10 m in 40 sec what will be the displacement after four. Complete rounds? |
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Answer» zero Explanation: |
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| 29. |
In fabry protection Interferometer we analysis the transmitted light |
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Answer» ELECTRICALLY Tunable Micromachined Fabry-Perot Interferometer The Fabry-Perot interferometer is an optical resonator consisting of two parallel MIRRORS. Fabry-Perot interferometers can be made by silicon bulk micromachining.45,46 Silicon surface micromachining is also a suitable technique for making interferometers for infrared wavelengths. The principle of a gas concentration measurement system operating on an electrically tunable micromachined Fabry-Perot interferometer is NDIR (non-dispersive infrared) single-beam dual-wavelength measurement.46 The interferometer is tuned so that the pass band coincides with the absorption band of the measured gas. A DETECTOR records the signal STRENGTH after the measurement chamber. The pass band of the Fabry-Perot interferometer then shifts to EITHER side of the absorption band, and the signal now detected constitutes the reference signal |
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| 30. |
F=b-t2/aRoot x here f is force ,x is in metre and a and b are constant |
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Answer» what is the QUESTION here ? |
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| 31. |
A wheel has eight spokes. It is mounted on a fixed axle and is spinning at a constant angular velocity. You want to shoot an arrow parallel to this axle and through the wheel without hitting any of the spokes. The minimum speed the arrow must have is , , close mid far v v v for three cases where arrow was aimed on same radius of the wheel at a distance 3 , , 4 2 4 R R R from the axle respectively. Ignore gravity and assume all other conditions for three arrows are the same. Choose the correct option. |
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Answer» i DONT know Explanation: |
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| 32. |
PLZ PLZ ANSWER IT =_= |
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Answer» Answer: 6m/s Explanation: draw a LINE perpendicular to X axis from 25S as SHOWN in graph and SEE where it cuts the line of acceleration |
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| 33. |
an electric generator has an emf of 240V and an internal resistance of 1 ohm. if the current supplied by the generator is 20A when the terminal volatge is 220V. what would be the ratio of the power supplied to the external load to the power dissipated in the generator's internal resistance |
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Answer» Answer: 11:1Explanation: P=I^2/R P=20×20/1=400......EQ i P=VI=220×20=4400W P1/P2=4400/400 11:1 |
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| 34. |
Measure the time it takes you to walkfrom your house to your bus stop orthe school. If you consider thatyour average walking speed is 4kem htestimate the distance of the bus stopor school from your house. |
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Answer» The distance FORMULA given the speed and time is given by : Distance = Speed × time In this case we should understand that the distance remains constant. The speed and time can vary for different people. So in this case we have the distance from your HOUSE to the bus stop or the school. In this case you need to measure the time you take to reach the school or the bus stop from the house. Once you do this then you can substitute in the formula above. Lets SAY it takes you 2 hours from the house to the bus stop or to the school the distance will be : 2 × 4 = 8km Read more on Brainly.in - brainly.in/question/3418884#readmore |
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| 35. |
Two point charges of magnitude2x 10^-7 C and 8.5x10^-8 C are 0.1 m apart. Calculate electric field intensity that each charge produces at site ofother. |
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Answer» Answer: Explanation: The electric field INTENSITY is the measure of the STRENGTH of an electric field at any POINT. It is equal to the electric force per unit CHARGE EXPERIENCED by a test charge which is placed at that point. E= |
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| 36. |
A bus was moving with a speed of 54km/h. On applying brakes, it stopped in 8 seconds. Calculate the acceleration and distance travelled before stopping.Please solve it . |
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Answer» GIVEN that, the bus is moving with initial velocity (u) = 54 km/hr = 15 m/s On applying BRAKES, it stopped in 8 seconds. Final velocity (V) = 0 km/hr and Time = 8 sec We have to find the acceleration and DISTANCE travelled before stopping. i) For acceleration: According to Newton's First Law of Motion v = u + at → 0 = 15 + a(8) → -15 = 8a → -15/8 = a → a = -1.875 m/s² (Negative signs shows deacceleration) ii) For distance According to Newton's Second Law of Motion s = ut + 1/2 at² → s = 15(8) + 1/2 × (-1.875)(8)² → s = 120 + (-120/2) → s = 120 - 60 → s = 60 m |
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| 37. |
Measure the time it takes you to walkfrom your house to your bus stop orthe school. If you consider thatyour average walking speed is 4km h'estimate the distance of the bus stopor school from your house. |
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| 38. |
Is it safe to connect an electric bulb rated 40-200 watt to a line voltage of 300 |
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Answer» Answer:You can not calculate this like if it was a resistor. The filament in light BULB change resistance with temperature. Here is the only case that work: When the voltage is too high for a light bulb, it is no problem to connect many light bulb in series, all the same model (same voltage, same piwer in watts, same current).. Christmas lights, for example ; 10 light bulb of 12 volt in series works fine. Even car healight, 10 of these in series, normally using 5 amps at 12 volt WOULD take 5 amps under 120 volt ac. However, if any of the 12 head light would be unequal, for example connected on high beam filament, then the non linear resistance of tungsten would become evident. Example 1: 11 head light on low beam, 1 on high beam: The 11 head lights would be brighter than usual and the voltage on each one would be around 13 volt. Its ok because they are designed to work at 14.4 volt, the voltage needed to charge a lead/acid battery. The only head light on high beam would be dimmer and the voltage would be about 2 volt. Example 2: 11 head lights on high beam and one on low beam, all connected in series and powered on 120 volt ac. Result: the only head light on low beam would flash very bright for 1/60 second and burn. What happened? Because on the non LINEARITY, the light bulb which present the highest resistance on COLD start immediately receive a HIGHER voltage than all the other. It quickly reach full temperature, which makes it resistances raise by a factor of 15. The other light bulbs get less than 12 volt, so they slowly warm up and barely become dim red. Because all the light bulb are connected in series, the current is identical. However, the voltage keep rising faster in the low beam bulb. It quickly reach the value that destroy the filement, for a low beam, the same current for high beam is only making then dim, no worry, no stress for those 11 head light. 2.9k viewsView 6 Upvoters Related Questions (More Answers Below) |
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| 39. |
What is the equivalent resistance of the following network resistances |
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Answer» Answer: The resistance of this imaginary resistor is the equivalent resistance of the circuit, Req R E Q . There are two rules for FINDING equivalent resistance, for resistors in series and parallel. If SEVERAL resistors are in series, we simply add up the resistances. Req=R1+R2+R3+... |
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| 40. |
A ______ turns about a fixed point called a fulcrum. |
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Answer» Answer: A lever consists of a rigid arm, which is free to TURN about a FIXED POINT called the fulcrum. The fulcrum is a pivot point. ... The resisting weight [the load] is exerted upon the lever arm, which tends to move the lever in the opposite direction to the APPLIED force. plz mark it as brainlist.. follow me..☺☺✌✌ |
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| 41. |
WHICH HAS HIGH RESISTANCE A 50 V BULB OR 2,5 W BULB |
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Answer» 2.5 WATTS is 20 TIMES more than 50 watts of BULB.
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| 42. |
an electric motor takes 5A from a 220V line . Determine the power of the motor and the energy consumed in 2 hours |
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Answer» Answer: The answer to this question is = 2.2 KWh Explanation: The WORK done in MOVING 5 A charge through POTENTIAL DIFFERENCE 220 V is = W = V*I W = 220*5 W = 1100 W = 1.1 KW The energy consumed in 2 hours = 1.1 KW * 2 h = 2.2 KWh I HOPE IT WILL HELP YOU. |
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| 43. |
Please help!If a car is traveling at 15 mph and increases to a speed of 45 mph in 10 seconds, what is the acceleration?A.30 mphB.3 mphC.3 mph/sD.30 mph/s |
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Answer» Acceleration of the car is given by change in VELOCITY PER time hence the acc= 45- 15/10 = 30/10 = 3 mph/s Mark it brainliest please!! |
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| 44. |
what is meant by radius of curvature of a spherical mirror?how is it related to focal length of the mirror |
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Answer» Answer: YOUR ANSWER ⬇️⬇️⬇️⬇️Explanation: The REFLECTING SURFACE of a spherical mirror forms a part of a sphere. The radius of that sphere is the radius of CURVATURE of a spherical mirror. it is represented by the letter 'R'if R is the radius of curvature and f is the focal length then,R= 2F |
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| 45. |
A person is moving along circular boundary of a field of radius r. Calculate distance and displacement from initial point if he complete 2.5 round around boundary of field |
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Answer» Answer: DISTANCE =5πr Displacement= 2r=Diameter Explanation: hope it helps... PLEASE MARK me as a BRAINLIEST |
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| 46. |
The following question consists of two statements – Assertion (A) and Reason (R). Answer thisquestion by selecting the appropriate option given below.a) Both A and R are true and R is the correct explanation of Ab) Both A and R are true but R is not the correct explanation of Ac) A is true but R is falsed) A is false but R is trueAssertion (A): Transverse waves are not produced in liquids and gases.Reason (R): Light waves are transverse waves. |
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Answer» both ASSERTION and reason are correct Explanation: the particles in TRANSVERSE waves moves perpendicularly to the direction of PROPAGATION so it can't propagate in gas and liquid. transverse waves are perpendicular |
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| 47. |
To increase the effective resistance in a circuit the resisitor are connected in ? |
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Answer» series Explanation: |
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| 48. |
During an experiment, a signal form a spaceship reached the ground station in five minutes. What was the distance of the spaceship from the ground station? The signal travels at the speed of light, that is, 3×(10)8 metre per second. |
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Answer» Explanation: 3×100000000=300000000m=300000km 5mins=60×5=300secs satellite AWAY from our planet =300000×300=90000000km =90 MILLION km 1 AU=150000000 9000000/150000000 =3/50 Au UNIT away |
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| 49. |
If constant charge is flowing in the circuit the what's the current |
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Answer» UR mom Explanation: |
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| 50. |
Explain in short De-Broglie hypothesis of matter waves. |
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Answer» sorry dear I can't answer your question............. Explanation: please FOLLOW me dear ............ |
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