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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. |
দুটি একই পরিমাপের আধান d ব্যবধানে অবস্থিত। তৃতীয় একটি আধানকে প্রথম আধান দুটির লম্ব সমদ্বিখণ্ডকের ওপর x দূরত্বে রাখা হল | দেখাও যে,আধানটি সর্বাধিক বল অনুভব করবে যখন x = d÷(2√2) |
| Answer» PLZ WRITE it in any other LANGUAGE | |
| 2. |
1.a concave mirror has a focal length of 18 cm where will an image form if an object is placed 58 cm from the mirror? also if the object is 12 cm tall what will be the height of the image? is image erect or inverted ?real or virtual? 2.where will the image form if the same object is places 36 cn in front of the same mirror as in ques.1?how tall is the image?3.where will the image form if the same object is placed 32 cm in front of the same mirror as in ques 1.?how tall is the image?4.where will the image form if the same object is placed 15 cm in front of a convex mirror as in ques 1.?how tall is the image?is the image erect or inverted?real or virtual?5.where will the image form if the same object is placed 15 cm infront of the convex mirror with focal length of 18 cm ?how tall is the image ?is the image erect or inverted?real or virtual? |
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Answer» Here are the ANSWERS!Explanation:REFER attachment for explanation!!Ps - Question 4 doesn’t specify the focal length of the CONVEX MIRROR. |
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| 3. |
Explain its derivation please |
| Answer» U + ATWE KNOW,2. We know,Therefore,3. v² - u² = 2asWe know,Now,❤Hope It Helps.❤Follow Me. | |
| 4. |
A 19.8-kg box rests on a frictionless ramp with a 13.6 degree slope. The mover pulls on a rope attached to the box to pull it up the incline. If the rope makes an angle of 42.4degrees with the horizontal, what is the smallest force F the mover will have to exert to move the box up the ramp? |
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Answer» bewakuf bewakuf bewakuf bewakuf bewakuf bewakuf bewakuf bewakuf bewakuf bewakuf bewakuf bewakuf bewakuf bewakuf bewakuf bewakuf bewakuf bewakuf bewakuf bewakuf bewakuf bewakuf bewakuf bewakuf bewakuf bewakuf bewakuf bewakuf bewakuf bewakuf 05335 |
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| 5. |
A light bulb rayed 60watt at 240 volts is operated from a 240v source find the current flowing through the bulb |
| Answer» P = VI I = P/V = 0.2A..... | |
| 6. |
Laser tuning with dispersion? |
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Answer» ♪➡️Here u GO In dispersion tuning, the free spectral range (FSR) is a function of wavelength or frequency in a highly dispersive laser cavity. The light is actively modelocked when the light in the laser cavity is intensity modulated at the INTEGRAL multiple frequency of the FSR.WANT TO KNOW MORE!?Have a LOOK here:-↘️Refer to the ATTACHMENT Mark me as brainliest Answer by --@crazygirl169(*'▽'*)♪Follow us! |
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| 7. |
IF NET WORK DONE IS ZERO WHILE LIFTING AN OBJECT TO A HEIGHT H FROM GROUND.THEN FROM WHERE DOES THE OBJECT GAINS P.E AND IF ITS GAINS DUE TO GRAVITY THEN WHERE DOES THE WORK DONE DUE TO APPLIED FORCE GO?? |
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Answer» Explanation:The WORK DONE due to GRAVITY is not ZERO as force of gravitation acts in downward direction and lifting with have a displacement UPSIDE. Thus it is negative. |
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| 8. |
A steel ball A of mass 20.0kg moving with a speed of 200ms Collides with another ball B of mars 10.0kg which is initiallyat rest. After collision, A mones with a speed of 1.oms eat angle of 30° with its original direction of motion • Determinethe final velocity of B.ution10 |
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Answer» bola yah of mass 20 50 kg moving with a speed of 200 m s idioms with another ball of mass 10.0 kg which is INITIALLY at rest after collision a moment with a speed of at ANGLE of 30° with original direction of MOTION determine the final velocity of b u n answer answer is don't KNOW to me I am very very sorry please mark me apps marquis brain LIST market |
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| 9. |
For total internal reflection the value of angle of incidence should be ____. |
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Answer» Since the ANGLE of incidence is greater the air-water CRITICAL angle of about 48°, it undergoes TOTAL internal REFLECTION (TIR).` |
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| 10. |
Density of ice is rho and that of water is sigma. What will be the density in volume when a mass M of ice melts? |
| Answer» EXPLANATION:Mσ−ρ (sigma-rho)/(M)` M[1ρ−1σ] 1M[1ρ−1σ] ANSWER : C Solution : Volume of ice = Mρ volume of WATER = Mσ | |
| 11. |
______ 4. Potential energy is the stored energy a system has to do an action, such as when you lift a book over your head right before you drop it. Potential energy also exists between charged particles. Which of the following is true about the potential energy between charged particles? Choose the two that apply. A. Potential energy increases as like charges get closer. B. Potential energy increases as opposite charges get closer. C. Potential energy remains the same between like charges as they move apart. D. Potential energy increases as any charges move closer together. E. Potential energy decreases as like charges get closer together |
| Answer» B AND EExplanation: | |
| 12. |
two identical spheres have unequal opposite charge are placed at at a distance of 0.90m apart. after touching them mutually they are again placed at the same distance apart . now they repel each other with a force of 0.025N . calculate the final charge on each of them. |
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Answer» initial charges be q1 and q2 respectively.After they come in CONTACT ,the charges are rearranged such that they REQUIRE same CHARGE.let US say that charge of each of them is Q.They are again brought apart at a DISTANCE of 0.9 m.hence, the force between them is given as:F = kQ^2/r^20.025= (9×10^9×Q^2)/0.9^2Q^2=0.025×0.9^2/9×10^9Q=1.5×10^-6C |
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| 13. |
Three capacitors of 2uF, 3 uF and 6uF are joined in series and the combination is charged by means of a 30-volt battery. The potential difference between the plates of the6 uF capacitor is(a) 10 volts(b) 5 volts(c) 6 volts(d) 8 volts |
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Answer» uFV=30Vso, q=CV=30uCIn ,series CHARGE remain same on EVERY capacitor so for 6uF capacitor:q=30uCC=6uFHence, V=q/C = 30/6 =5VoltsAns:5 VoltsHope this hlep u!!!!Please mark as BRAINLIEST too!!! |
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| 14. |
Plz explain the answer |
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Answer» gfuExplanation:hfyf |
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| 15. |
Can anybody explain me the brownian motion n physics??Whosoever will answer first i will rate it as the brainlliest.. |
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Answer» Hi! Explanation:Brownian motion:Brownian motion is the random MOVEMENT of particles in a FLUID due to their collisions with other atoms or molecules. I hope my answer HELPS u... thanq :) |
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| 16. |
Two bulbs of 40 and 60 watt rating are connected parallel combination in 220 V supply line. In which bulb more heat will be produced ? |
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Answer» 40WExplanation:we know thatpower is INVERSELY PROPORTIONAL to RESISTANCE sincepower = Voltage ^2/R voltage is constantsoaccording to QUESTION the higher resistance is of 40watt .higher resistance MEANS higher heat is produced. |
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| 17. |
What is the reading of ammeter? |
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Answer» 0.33Explanation:This is a case of balanced wheatstone bridge , so the central 6ohm resistor REMOVED .The resistor network SIMPLIFIED to 6ohm ( see series and parallel CONNECTIONS ) .Using ohms LAW , V=iR given that V=2VoltsR=6ohmscurrent is therefore 1/3 AMPERES or 0.33amperes |
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| 18. |
* Draw the structure of the following compound-lethane2-Phenylethanol 61,1-Trichloro-2,2-dipheny2-Phenylethanomine 2- (Chloromethyl chlorobensen33-Diphenylbutin -2-01 6 62-bis (4-chlorophenylethine2,9-Dintrobenzenomine, Ø 4-Nitro so -N-dimethylben jan samningSo Benzhe 14- dicarborglic acid ( 1-Phinylpropshone |
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Answer» No results found for DRAW the structure of the FOLLOWING compound -lethane 2-Phenylethanol 61,1-Trichloro-2,2-dipheny 2-P |
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| 19. |
Explain reuse,recycle,reduce are eco friendly for environment |
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Answer» The environmental IMPACT of nuclear power RESULTS from the nuclear fuel cycle, OPERATION, and the EFFECTS of nuclear accidents. |
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| 20. |
A car is moving with a speed of 10 ms-1 on a circular track of radius 25 m. If its speed is increasing at the rate of 3 ms-1, its resultant acceleration is(a) 2.5 ms-1(b) 5 ms -1(c) 7.5 ms -1(d) 10 ms-1 |
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Answer» if it helps PLEASE MARK IT AS BRAINLIESTExplanation:TANGENTIAL ACCELERATION:at =3m/s Centripetal acceleration:ar = v^2/r=100/25=4 ∴ Net acceleration =√3^2+4^2=5 ms^-1 |
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| 21. |
A person travels along a straight road for the first half time with a velocity v1 and the second half time with a velocity v2. Then the mean velocity vis given by |
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Answer» Let the total DISTANCE be d. Time taken for the FIRST half half distance is t 1 = 2V 1 d Time taken for the second half of the distance is t 2 = 2v 2 d MEAN velocity = total time total distance v mean = 2v 2 d + 2v 1 d d v mean = v 1 +v 2 2v 1 v 2 ⇒ v mean 2 = v 1 1 + v 2 1 GIVEN, v mean =v ⇒ v 2 = v 1 1 + v 2 1 Explanation: |
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| 22. |
What is the general name of substance which is having infinetely high resistancy |
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Answer» An SUBSTANCE having infinitely high ELECTRICAL RESISTANCE is called insulator.Explanation:if you LIKE click on BRILLIANT |
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| 23. |
A car starts from rest and has a uniform acceleration of 2 meters per second .find the speed of the car after 5 seconds |
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Answer» speed=10 is your ANSWER |
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| 24. |
What is radar communication |
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Answer» Radar stands for Radio DETECTION and RANGING. At a very basic LEVEL, its just transmitting RF/Microwave signals and detecting any shift in frequency(doppler shift). By doing this, it can find out the distance, speed, shape and even terrain and IMAGERY of an OBJECT. |
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| 25. |
V-q graph for capacitor |
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Answer» 1 is the most accurate answer but graph will never tip down at the end , slope TENDS to BECOME zero at infinity.Explanation:Let us assume a case of some resistance in the wires during CONNECTION of the capacitor plates to the battery.Emf of the battery is ECapacitance of the capacitor is Cresistance of the wires is RNow , using kirchoff loop RULE E - iR - q/c =0since I=dq/dtThe above equation is a first order variable separable .After solving the equation , and placing the boundary conditions ( at t=0 , charge is zero)the solution isq=CE( 1 - e^(-t/RC))we also know that at any instant , potential difference across a capacitor is q/cV=q/c= E(1 - e^(-t/RC))since q/v is constant q=CV the plot is a straight line |
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| 26. |
Answer this pls asap |
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Answer» hen the bus starts suddenly, then, the lower part of BODY starts being in motion because it is in touch of bus in motion, while the upper part of body tries to be at rest for sometime, because of inertia at rest. this is why, PASSENGERS tends to fall backwards when it starts suddenly.Ans-4 Due to inertia of rest, the LEAVES try to be in rest when a tree is shaken. But the BRANCH and trunk comes into motion which causes the leaves to separate from its branch. Hence, the leaves fall when a tree is shaken. |
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| 28. |
Weight of beam is 120N pivoted at point o. the beam is kept equilibrium by force f find f |
| Answer» SORRY DEAR friend®ℹ♎♌ | |
| 29. |
What is the smallest value in physics |
| Answer» PLANCK's constant is the smallest unit of angular MOMENTUM that is MEASURABLE, or actually ONE HALF of Planck's constant is the smallest. | |
| 30. |
Explain working and principles of ac generator |
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Answer» tion:Principle of working:AC generator works on the principle of Faraday's Laws of electromagnetic induction. ACCORDING to it, when there is change of magnetic flux through a conductor loop, an EMF is induced across the ends of the loop. The induced emf is such that it opposes the cause that induced it. It is given as negative of rate of change of magnetic flux through the circuit.ε=− dtdϕ B By law of conservation of energy, the kinetic energy supplied by the external means to rotate the coil is converted into electrical energy.Working:The strong magnets create a magnetic field between the magnets directed from the north pole to the south pole. The coil is rotated by external means. As the coil rotates, the angle between the magnetic field and the coil changes which leads to the generation of an (ALTERNATING) induced emf. The ends of the coil is connected to an external circuit by the means of carbon brushes and slip rings. When the external circuit is closed, an alternating current flows through the coil and HENCE, electrical energy is supplied to the circuit. |
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| 31. |
4. 5 i (22E 4 т) -Сcoaceleration becomes Zeneоцел - 9 |
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Answer» Explanation: The Commission is adopting new RULE 22e-4, which requires each ... meant that an open-end fund had to have a liquid portfolio.5 Since the ... 9. Generally, settlement time frames for MUTUAL fund shares have been ... liquidity risk may BECOME constrained in its portfolio management, to the DETRIMENT of its. |
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| 32. |
What is the dimension of w in y=asin wt? |
| Answer» LD be[ T] ^-1As WT should be DIM LESS (as it's ANGLE) | |
| 33. |
An image is placed infront of convex mirror at a distance of 10cm.The radius of curvature is10cm.find the image distance |
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Answer» Explanation:OBJECT DISTANCE , U = - 10 CM RADIUS OF CURVATURE , R = + 10 CM FOCAL LENGTH ,F = + 10/2=+5 CMIMAGE DISTANCE = ?WE KNOW BY MIRROR FORMULA ,1/V+1/U=1/F1/V-1/10=1/51/V=1/5+1/10V = 10*5/(10+5)V= 50/15V = 3.33 CM . ON THE RIGHT SIDE OF THE MIRROR [ VIRTUAL ERECT IMAGE NOT OBTAINED ON A SCREEN].HOPE THIS HELPS. |
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| 34. |
Velocity=t^3+1 find displacement from 0 to 3 sec |
| Answer» 84 mExplanation:TIME = 3 secondsVelocity = t^3+2=3^3+1 = 27+1 = 28m/sVelocity= Disp/Time28= Disp/3Displacement = 84 m | |
| 35. |
Magnification produced by a concave mirror is -2.what is its meaning |
| Answer» TION:HI it SHOWS the ratio of the height of IMAGE to the height of object.please like my answer | |
| 36. |
Two identical galvanometers are converted into an ammeter and a millimeter. The shunt whichhas more resistance due to the currentpassing through the coil will be(a)more (b) less(e) equаl (d) zero |
| Answer» B why more RESISTANT DUE to LESS CURRENT | |
| 37. |
Imagine that sugar is being poured from one container to another slowly. You can observe that sugar particles movement is like sugar is flowing from one container to another and taking the shape of that container. Should we then call sugar or a liquid? Substantive your answer |
| Answer» SUGAR PARTICLES MOVEMENT will be gonig the sugar particles WIL be LIQUID | |
| 38. |
Can an object be accelerated without speeding up or slowing down? explain? |
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Answer» Yes Explanation:a OBJECT can ACCELERATE WITHOUT speeding up or down |
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| 39. |
Plz help me if you know the answer |
| Answer» TENSION =4√5×10^-4 , ANGLE = tan^-1(1/2)Explanation:equate the opposite forces in ORDER to stay the body at equilibrium.this THREE forces will balance each other then BREAK the tension component and equate the opposite acting forces | |
| 40. |
Kripaya attachment solve karein....dhanyawad.. |
| Answer» EXPLANATION:ΔTF = KF* MOLALITY [ MOLALITY= GIVEN MASS*1000 ------------------------------- MOLAR MASS * MASS OF SOLVENT]GIVEN MASS = 0.1 GMOLAR MASS = 329 GKF = 1.86ΔTF = 1.86 * 0.1*1000/329*100ΔTF = 0.0056 KΔ TF = - 5.7*10^-3 HOPE THIS HELPS. | |
| 41. |
While driving along an unbanked circular road a two wheeler rider has to lean with vertical. Why is it so ?with what angle the rides has to lean ?Derive the relevant expression. Why such a leaning is not necessary for a four wheeler ? |
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Answer» Because AG has a positive value, you know that the product ofthis reaction has more FREE ... THUS, the reaction pathways have changed, but OVERALL the reactantsExplanation:this may HELP |
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| 42. |
When balanced force act on a stationary body , then the body is deformed true or false |
| Answer» BALANCED FORCES do not cause any CHANGE of STATE of an object. FALSE. | |
| 43. |
Is power inversely proportional by time taken by a body? |
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Answer» YESExplanation:AS PER THE FORMULA ,POWER = WORK DONE / TIME TAKEN . HENCE POWER IS INVERSELY PROPORTIONAL TO TIME TAKEN.HOPE THIS HELPS. |
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| 44. |
Mass is equals to 1300 gram density is equals to 65 kilogram per metre cube find volume who will answer it first and correctly I will make it a dangerous answer and you will get hundred points for answering this question so what are you waiting for please answer fast |
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Answer» tion:given that mass = 1300gm= 1.3 KG (as we are having different units we need to convert them into same units or else error will occur in calculation)density=65kg/m^3we know density = mass/volume => volume= mass/density=> volume = 1.3/65 = 0.02m^3"don't FORGET to MENTIONS units of every value"hope you understood please let me know for any othet QUIRES good LUCK buddy:) |
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| 45. |
What character should an ideal fuel posses |
| Answer» TION:It should have a high calorific value and a moderate rate of combustion. It should not produce any harmful products on burning. It should cause MINIMUM AIR pollution. It should be cheap and readily AVAILABLE. | |
| 46. |
An electron is placed between two point A and B.While A has a potential difference of 5V and B has a potential difference of 2V, (1) Electron moves towards A (2) Electron moves towards B (3) Electron moves up (4) Electron stays stationary. |
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Answer» so it is PLACED what we have to do SLEEP it's NIGHT GOING on |
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| 47. |
Please solve this problem if give the answer with proper explanation i will mark the BRAINLIEST ANSWER |
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Answer» the answer is 2:3 but I don't KNOW anything about it. Explanation:if this answer is INCORRECT. but PLEASE brain LIST me |
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| 48. |
What is rotation motion |
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Answer» n is a circular movement of an object AROUND a center (or point) of rotation. A three-dimensional object can always be ROTATED about an infinite number of imaginary lines called rotation axes . If the axis passes through the BODY's center of mass, the body is said to rotate upon itself, or spin. A rotation around an EXTERNAL point, e.g. the planet Earth around the Sun, is called a revolution or orbital revolution, typically when it is produced by gravity. The axis is called a POLE |
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| 49. |
Particle of mass m and carrying a charge -q, is moving around a charge +q along the radius r. find the period of resolution of the charge -q. |
| Answer» EXPLANATION:The time PERIOD of A with RESPECT to B is 2pi times the reciprocal of the relative angular speed of A with respect to B. Relative angular speed, ωAB=2π(1tA−1tB)=2π(14s−16s)=2π12s Time period of A with respect to B =2πωAB=12s | |
| 50. |
Hi! I am Natasha kapoor. My question is, how would pressure change if force is doubled keeping area constant. Express the answer through the correct mathematical equation. |
| Answer» EXPLANATION:We know that Pressure=Force/AreaSo LET original Force be F, original pressure be P and original area is A then, P=F/ANow let NEW Force,Pressure and Area be F',P' and A'.Given F'=2F and A'=Athen P'=F'/A' = 2F/A = 2PThus, P'=2P | |