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. |
an aircraft is trying to fly due north at a speed of 100 m per sec. it is subjected to a cross wind blowing from west to east at speed of 50 m per sec what is the actual velocity of aircraft relative to surface of earth |
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Answer» 111.803 m/sExplanation:In the QUESTION,Speed of flying of Aircraft DUE North, s₁ = 100 m/sSpeed of wind from West to EAST, s₂ = 50 m/sNow,We know that the relative sped of the aircraft w.r.t to Surface of Earth is given by,where,s₃ is the resultant relative speed of the aircraft w.r.t the surface of Earth.Hence, the CORRECT answer is 111.803 m/s. |
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| 2. |
A ki reading nikalna when kunji k( 1. open ho) (2. close ho) |
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Answer» when key is OPEN i=v÷r=12÷40when key is closed the EQUIVALENT RESISTANCE changes to 1by 40 plus 1by 40 whole inverse which gives 20 i=v÷r(equivalent)= 12÷20 |
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| 3. |
a body of mass 2kg is kepted at rest and a force of 6newton acts on it find the time taken by the body to move through distance of 54m |
| Answer» HOPE my ANSWER HELPS you......... | |
| 4. |
Solve it especially for class 10th |
| Answer» RO resistance wire is connected charges would FLOW through it instead of going through a path with higher resistance which wastes energy that is why the right most circuit is EQUIVALENT to a wire of zero resistance or it could be said that CURRENT doesn't pass through the resistors therefore answer is A | |
| 5. |
Hii gyes plz step by step Explanation |
| Answer» V1 =3i+4j+kV2=i-j-kadding.4i+3j+0kmagnitude √4^2+3^2+0^2√16+6=√25=5...ANSWER | |
| 6. |
Which of the following is an electromagnetic wave?a)alpha Ray'sb)beta Ray'sc)gaama rays |
| Answer» GAAMA RAY's................... | |
| 7. |
If the time taken to bring a ball to rest from a certain velocity v is reduced to half, what will be changes in values of:(a) initial and final momentum(b) change of momentum(c) rate of change of momentum. |
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Answer» please give me thanks a. momentum = mass * VELOCITY In both CASES initial and FINAL VELOCITIES are same. Therefore Initial and final momentum are same.b. CHANGE of momentum = Final momentum - Initial |
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| 8. |
Define inertia and its si unit :) |
| Answer» TION:The ability of an object to STAY in MOTION or REST is called inertia.si unit is mass | |
| 9. |
The maximum number of points of intersection of seven lines is? |
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Answer» imum number of POINTS of intersection when 4 lines are drawn in a plane, as shown, is 6 points. 5. The maximum number of points of intersection when 5 lines are drawn in a plane, as shown, is 10 points. 6.please mark it as a brainlist |
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| 10. |
If two identical objects are moving at different velocities |
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Answer» the OBJECTS take DIFFERENT time periods to cover the same DISTANCES simultaneously.hope it helped:) |
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| 11. |
If the sum of two unit vectors is also unit vector then the magnitude of their difference and angle between the two unit vector is |
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Answer» this is a VECTOR but if MULTIPLICATION is carried out answer MAY be SCALAR or may be vector |
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| 12. |
Metals used in our daily life and their uses |
| Answer» IRON,Copper,Zinc,Graphite,Mercury etc.Explanation:Iron Is the Most Widely USED Metal in our day-to-dya life.It is used in Making Electrical Appliances,Window panes,Doors,Computer Hardwares etc.Copper Is mostly Used in making Electrical wires that are very important in our daily life.It is also used in making Utensils and Water Purifiers.Zinc is a REACTIVE Metal and is above Iron in the Activity Series.It is also used in coating Iron Objects by the PROCESS of galvanization to PREVENT them from Rusting.Graphite is a Lustrous Metal that is used in making Pencil Leads.Mercury is a liquid-metal which is mainly used in Making Thermometers.Hope this Answer Satisfies you,Happy Studying :) | |
| 13. |
Density, pressure exerted by gas, force (find the odd one out |
| Answer» GAS is ODD from GIVEN OPTION | |
| 14. |
A particle is having non uniform circular motion along a circle of radius r. βis the angular displacement at time t. Then tangential acceleration at that instant is |
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Answer» 0 EXPLANATION:becoz in CONSERVATIVE force a is tangential at EVERY point and w=fds COSTHETA so f=0 it implies a=0 becoz f=ma a=0.f=0 |
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| 15. |
Why are road accidents at very high speed is very worse than road accidents at low speed |
| Answer» ANSWER is only velocity for bikes because as we dash with an object our body tries to REMAIN in rest because of that we are THROWN in a certain angle with a FAST SPEED | |
| 16. |
How many milimeteres are then 10 kilometers.......... |
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Answer» Explanation:1 KILOMETERS is EQUAL to 10 to the power 8 MM |
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| 17. |
Proved that u=1/2 sigma € |
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Answer» ssooooooooooooooooorrrrrrrrrrrrryyyyyyyyyyyy idonnot knowExplanation: |
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| 18. |
An object experience a net zero external unbalanced force. is ot possible for the obect to be traveling with a non zero velocity?If yes,state the condition that must be placed on the magnitude the Direction of the velocity.If no ,provide a reason. |
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Answer» (I) 2 SEC(II) 20 m/sExplanation:FOLLOW as I have done. You MAY query in COMMENTS |
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| 19. |
How does refraction take place in the atmosphere? Why dostars twinkle but not the planets? |
| Answer» STARS TWINKLE because they appears as pinpoints of light in the night sky even when VIEWED through a telescope . because all the light is coming from a single point.hope it HELPS u and MARK it as brainliest and follow me ❤❤ | |
| 20. |
How to solve this?? Its from Physics.Please show it step by step. No spam plz. |
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Answer» your handwriting is ILLEGIBLE mate I am sorry I can't UNDERSTAND ur handwriting |
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| 21. |
If l be the length of a bar magnet then separation |
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Answer» Then it should by SEPARATED by brraking it or atrracting through it by any hiigh POWER MAGNET |
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| 22. |
Why does one get hurt on jumping from a great height to floor? |
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Answer» when ANYONE jumps from height with gravitational FORCE so that same AMOUNT of force are exerted by floor mean NEW third law (every action have equal and opposite rxn) so that one get HURT on jumping.✌️✌️✌️✌️✌️✌️✌️❤️❤️❤️❤️ |
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| 23. |
Two capacitor of capacitance 2uf and 3uf are connected in serise and a third capacitor of 1uf is connected to it in parallel. Find the equivalent capacitance of the combination. |
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Answer» tion:Kendeil Group is one of the leading producers of power electronic capacitors for high-power inverter applications, including industrial motor drives, UPS, and battery CHARGERS. They are known for their proven long life and highly reliable electrolytic snap and screw type capacitors, and ALSO produce DC Link film capacitors for low and medium/high frequencies.Kendeil is also one of the only manufacturers that make a 600V electrolytic in a screw terminal package. These products are made with automated equipment, integrated technologies and advanced production processes, which are regularly updated to meet the highest international standards in performances and quality.Benefits Include:Long life for 85°C & 105°C Snap and Screw terminal electrolytic capacitors20,000 hours at rated conditions600V screw terminal electrolytic capacitors available, 1500-6800uFCustom designsAdvanced software MODELS to provide fast, accurate life predictions for any given operating conditionShort delivery TIME, typically 3-5 weeksKendeil is vertically integrated, as one of the few producers of electrolytics with etching capability for anode foil. This GIVES them the ability to control the complete manufacturing process. Having their own foil production not only makes for a more reliable part, it also helps minimize cost- the foil is some 70% of the production cost of a typical electrolytic, and guarantees material supply in times of high demand. |
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| 24. |
Two car A and B started from the same point moves with a speed of 60 km/hr and 80 km/hr ,inopposite direction . Find what is the distance between them in 1 1/2hour |
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Answer» the DISTANCE between them is 4 kmExplanation:d=speed/timeA:d=s/t =60/11/2 =120/11 =10B:d=s/t =80/11/2 =160/11 =14B-A=14-10 =4KM |
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| 25. |
A cat runs along a straight line with constant velocity of magnitude v. A dog chases the cat such that the velocity of dog is always directed towards the cat. The speed of dog is 'u' and always constant. At the instant both are separated by distance x and their velocities are mutually perpendicular. the magnitude of acceleration of dog is. |
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Answer» Pursuit curveExplanation:A cat runs along a straight line with constant velocity of magnitude v. A dog chases the cat such that the velocity of dog is always directed towards the cat. The speed of dog is 'u' and always constant. At the instant both are separated by distance x and their velocities are mutually PERPENDICULAR. the magnitude of acceleration of dog is.Such Problems can be solved using Pursuit curveThe notion of pursuit curve refers to the trajectory of a moving point M (the Dog or the chasing plane) the MOVEMENT of which is, at every instant, oriented in the direction of another moving point M0 (the Cat, or the chased plane), the trajectory of which is called escape curve.A curve of pursuit is a curve constructed by analogy to having a point or points representing PURSUERS and pursuees; the curve of pursuit is the curve traced by the pursuers. With the PATHS of the pursuer and pursuee parameterized in time, the pursuee is always on the pursuer's tangent.This is a quite complex .This problem is of a level of higher education.Not of a 12th Level. |
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| 26. |
i ) 70 N inclined at 30° towards east of north ( ii ) 80 N inclined at 50° towards west of north ( iii ) 12N inclined at 20° towards south from west ( iv ) 90 N inclined at 80° towards south from west ( v ) 10 N towards south . Find the magnitude and direction of resultant force . |
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Answer» jxkjsnnd day of SCHOOL and the other SIDE the BEST way for o the best of my life I am not sure if you have any questions or concerns PLEASE VISIT the best way to to to |
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| 27. |
What do you understand by octet rule |
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Answer» The octet RULE is a chemical rule of thumb that reflects OBSERVATION that ELEMENTS tend to BOND in such a way that each atom has eight ELECTRONS in its valence shell, giving it the same electronic configuration as a noble gas.HOPE IT HELPS YOU BUDDY..... @dhruvchaudhary38 |
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| 28. |
which would require greater force mass o10 kg , acceleration of 5 mper second squre or mass of 20 kg , acceleration of 2 mper second square |
| Answer» 20KG and ACC. of 2mper second NEEDS greater FORCE. | |
| 29. |
Difference between terminal potential difference and emf |
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Answer» ▶️the difference between terminal potential and EMF▶️potential difference:- it is the potential difference between the two electrode of a cell when current is closed.it indicates effect of the electric currentit depends upon the distance between the two point of circuit and current FLOWING in the circuit▶️EMF :- it is the maximum potential difference between the two electrode of a cell when electric circuit is openit is indicate the CAUSES of the resulting currentit is independent of resistance of the circuit and depend upon type of celljai MAHAKAL ❤️follow me ✔️@riyaduvedi |
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| 30. |
State the changes in form of energy while producing hydro electricity |
| Answer» TION:A hydroelectric POWER STATION converts the kinetic energy of flowing or falling water into electrical energy that can be used in homes and businesses. ... The water rushes past the turbine, hitting its blades and causing it to spin, converting some of the water's kinetic energy into MECHANICAL energy.plz mrk me as BRAINLIST... | |
| 31. |
Time period of oscillation of pendulum depends on the mass of the bog, length of the pendulum and Acceleration due to gravity. Obtain the relation between them using dimensional analysis. _________________________Please answer the above question. Best of luck ❤️Don't spam ✖️ |
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Answer» Explanation: Let Time period =T Mass of the bob = m Acceleration DUE to gravity = g Length of string = L Let T \alpha m ^{a}g ^{b}L ^{c} [T] \alpha [m] ^{a}[g] ^{b}[L] ^{c} M^{0}L^{0}T^{1}=M^{a}L^{b}T^{-2B}L^{c} M^{0}L^{0}T^{1}=M^{a}L^{b+c}T^{-2b} ⇒a=0 ⇒ Time period of oscillation is independent of mass of the bob -2b=1 ⇒b=-\frac{1}{2} b+c = 0 -\frac{1}{2} + c =0 c=\frac{1}{2} GIVING values to a,b and c in first equation T \alpha m ^{0}g ^{- \frac{1}{2} }L ^{ \frac{1}{2} } T \alpha \SQRT{ \frac{L}{g} } The real expression for Time period is T =2 \pi \sqrt{ \frac{L}{g} } Therefore time period of oscillation depends only on gravity and length of the string. Not on mass of the bob. |
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| 32. |
What is drip systen |
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Answer» rigation is a type of micro-irrigation system that has the potential to save water and NUTRIENTS by allowing water to drip SLOWLY to the roots of plants, either from above the soil surface or BURIED below the surface. The goal is to place water directly into the root zone and MINIMIZE evaporation. |
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| 33. |
Can someone please answer these 2 questions. Correct answer will surely be marked as the brainliest. |
| Answer» EXPLANATION:This is for year 12 MAYBE and I can tell YA the answer first question is 1096.5m and the SECOND one is 7001km | |
| 34. |
What is ciliary muscles and write their function |
| Answer» LAR muscle that relaxes or TIGHTENS the zonules to enable the LENS to change SHAPE for focusing. The zonules are fibers that HOLD the lens suspended in position and enable it to change shape during accommodation. | |
| 35. |
How to calculate weight of hollow shaft to solid ahaft? |
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Answer» byeheshusbdnjdsnsgshdbd dhsjsbhdbs |
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| 36. |
How is the best hydraulic channel cross-section defined examveda? |
| Answer» SORRY I am not ABLE to UNDERSTAND the QUESTION | |
| 37. |
The physical quantity expressed by their magnitude is which quantity |
| Answer» SCALAR quantityExplanation:because scalar QUANTITY STANDS for MAGNITUDE only | |
| 38. |
What burns during a candle flame? |
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Answer» the candle WICK BURNS and the wax melts.please MARK as brainliest:) |
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| 39. |
What kind of motion produces sound |
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Answer» all kinds of motions PRODUCE sound.Even the SLIGHTEST MOVEMENTS CAUSES sound.But most of the time,these sounds are infrasonic.hope it helped and pleeeeeeeeeeease mark as brainliest:) |
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| 40. |
when candle burns both physical and chemical change take place identify the change give another example of familiar process in which both physical and chemical change take place |
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Answer» when a candle burns only the STATE of matter of wax CHANGES from solid to liquid which is a PHYSICAL change whereas the AIR around the candle near wick of it it turns into fire which is a chemical change from air to heat energy |
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| 41. |
What are the advantages of friction ?Mention five advantages. |
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Answer» 1. It is becomes difficult to walk on a slippery road due to low friction. When we move on ICE, it becomes difficult to walk due to low friction of ice. 2. We can not fix nail in the wood or WALL if there is no friction. It is friction which holds the nail. 3. A horse can not pull a cart unless friction FURNISHES him a secure Foothold. 4. We can write on a paper or on a board. 5. Friction helps in applying the brakes. 6. It helps in walking on floor. 7. Coffee mug stays on the dashboard 8. Shuffling across a carpet to shock SOMEONE 9. Draging of atmosphere with earth is possible 10. Helps to prevents the LIFE on earth by burning asteroids.hope it helps and pleeeeeease mark as brainliest:) |
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| 42. |
A boy runs 40m toward east, then he walks 30m toward north. The body again runs 50m toward north by making angle 30° with east. What is his displacement (Ans: 99.8m bymaking angle 33.4°with east) |
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Answer» 68.00Explanation:NORTH: 30+50×sin30 =30+50×1/2 =30+25 =55East: 40Displacement:√{(40)^2+(55)^2} =√{1600+3025} =√4625 =68.00 |
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| 43. |
a boy leaves his house at 9:30 a.m. for the school the school is 2 kilometre away and the classes starts at 10:00 a.m. if he walks at the speed of 3 kilometre per hour for the first kilometre at what speed should he walk second kilometre to reach just in time |
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Answer» He should walk the second kilometre in speed = 6km/hr to reach just in time.Explanation:The total distance = 2 kilometerSpeed of the boy for the FIRST kilometer = 3 km/hrHence the time TAKEN by him to cover the first kilometer distance .: t = distance / speed=> t = (1/3) hr = 60/3 = 20 minutesThus the time left to cover the REMAINING one kilometer = total time available - time already consumed => time left in MINUTES = 30 - 20= 10Hence the speed required to reach school at time = 1km/10min....(eq.1)= 1000m/10min = 100meter/minuteIn METER per second= 100/60 = 10/6 = 1.67 m/sIn kilometer per hourspeed = 1km/10min (from eq.1) = 1÷1/6 km/hrwhich equals to 1×6/1 = 6km/hr |
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| 44. |
Draw the free body diagram of the following |
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Answer» dove DOUGHNUT fight fouji duhkh study such night durg dtc bujh DIN biggest GUILD SUBMIT yunhi light chihn |
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| 46. |
A bullet losses 1/n of its velocity in passing through a plank. What is the least number of planks required to stop the bullet ? (Assuming constant retardation) |
| Answer» | |
| 47. |
Example 1.7: The length and breadth of a boa are measured to be (3.2 + 0.2) cm and (1.2 + 0.14cm. Determine its area and the errors. |
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Answer» area=L*BEXPLANATION:L=3.2+0.2=3.4B=1.2+0.14=1.34Area= L*B 3.4*1.34=4.556=4.57=4.8 |
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| 48. |
Battery statement @application |
| Answer» LITHIUM ion batteries are one of the most popular types of rechargeable batteries. They are found in different portable appliances including mobile phones, smart devices and several other battery appliances used at home. They also FIND APPLICATIONS in aerospace and MILITARY applications due to their lightweight nature.Explanation: | |
| 49. |
Figure shows position versus time graph of two rabbits running opposite to each other between two trees. Which rabbit has greater magnitude of average velocity? |
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Answer» igure shows position versus time GRAPH of two rabbits running opposite to each other between two trees.To find:Which rabbit has higher average velocity ?CALCULATION:Average velocity is defined as the RATIO of the total displacement to the total time taken to complete the displacement.Now , avg. v = ∆x/∆t , so we can say that:The slope of the the displacement time graph gives US the instantaneous velocity.But when an object is moving in a SINGLE directions, average velocity is directly proportional to the instantaneous velocity of the object.So, higher the slope (steep-ness) of curve , higher will be the average velocity for that rabbit.Since the graph for rabbit B is steeper , hence it has higher average velocity than rabbit A. Hope It Helps. |
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