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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. |
Process of escaping of molecules from surface of liquid at any temperature is called_____________ |
| Answer» TION:EVAPORATION is CORRECT ANSWER | |
| 2. |
Please anyone explain the 10th question in the above pic I know the answer but I just need explanation No irrelevant answers please Thanks a lot |
| Answer» ANS 9000 NEWTON FORCE this is the ANSWERS | |
| 4. |
an aircraft take off run has a steady acceleration of 3m/s^2, what velocity does it gain in 4 seconds |
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Answer» izidjdbfbcjjfnfbejwosjsbdbxhejbsbdhfExplanation:bjnbvhbvgjbvchvvvbhjvbbnjjasjjxbcidkwnbdjxkdndbdhdjdbxnjdidndndbjndbchdjencbcheijsbxbhdjw |
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| 5. |
A Dantist uses a concave mirror of focal length 3cm and holds itat a distance af 2cm con from the teepthWhat is the megnification of image |
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Answer» that means IMAGE is virtual, ERECT and 3 times ENLARGE than the OBJECT. hope it helped you |
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| 6. |
State the effects of unemployment |
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Answer» 1) Increase in social PROBLEMS2)Areas of HIGH unemployment tend to have more CRIME and vandalism3) Financial hardship and debt4)Boredom5)SHAME and stigma |
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| 7. |
How much will be thePower of a 220v : 100w bulb..Working...at 110v? |
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Answer» P= 25 W Please mark me as a brainlist.Explanation:P=V 2 /RAT 220 V,100=220 2 /R..........(i) At 110 V,P=110 2 /R...........(II)DIVIDING (i) from (ii),P/100=110 2 /220 2 P=25 W |
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| 8. |
A moving charge produesboth electric and magneticcharge or fields ? |
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Answer» YesExplanation:Because when they MOVE PRODUCE both electric and magnetic WAVES (Fields)Which we ALSO know as ELECTROMAGNETIC Radiation |
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| 9. |
A person can run on ground with a maximum speed of 6 m/s. The person stands on the rear endof roof a train moving with constant velocity. Thelength of train is 120 m. The man begins to run atthis maximum a capacity towards the front end,reaches the front end, immediately turns back andrun towards the rear end. Find the netdisplacement of the man w.rt. ground by the timehe reaches back to rear end. The velocity of trainis 10 m/s(1) O(2) 400 m(3) 200 m(4) 100 m |
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Answer» 0Explanation:I HOPE it HELPS you and MARK me down as a BRAINLIEST |
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| 10. |
What are (1)free fall (2)acceleration due to gravity (3)escape velocity (4)centripetal force ? |
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Answer» Explanation:1] Free fall is the motion of an object in which it is affected only by the influence of gravity. 2] The accleration which is gained by an object because of the gravitaional force is called acceleration due to gravity. 3] The lowest velocity which a body must have in order to ESCAPE the gravitational attraction of a particular planet or other object. 4] A force which acts on a body moving in CIRCULAR path and is directed towards the CENTRE around which the body is moving. HOPE IT HELPED YOU |
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| 11. |
Why enable an object to remain suspended in the water |
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Answer» tion:An object in a liquid is suspended only if its density is less than or EQUAL to that of the liquid. In case of lesser density, theobject partially floats outside since it requires lesser VOLUME of WATER to achieve equilibrium from the upthrust. It is suspended because first of all, NET FORCE =0..... |
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| 12. |
Wave transmit energy does it transmit Momentum can it transmit angular momentum? |
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Answer» magnetic waves could carry ORBITAL angular MOMENTUM. Such momentum can be transferred to macroscopic objects and can make them rotate under a constant torque. ... This leads to a rotational Doppler SHIFT of the electromagnetic WAVE frequency, ENSURING energy conservation.ヾ(＾-＾)ノ |
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| 13. |
Particles moves along the x-axis according to the equation x= 3t^2 - 2t + 3, where x is in meters and t is in seconds at t= 3s. Find a.) the position of the particle b.) it's velocity c.) it's acceleration |
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Answer» tion:The POSITION of a PARTICLE MOVING along x-axis is given byx=(−2t 3 +3t 2 +5)mVelocity, v= dtdx =0−6T 2 +6t=0. . . . . . .(1)6t(−t+1)=0−t+1=0t=1secAcceleration, a= dtdv a=−12t+6a∣ t=1sec =−12×1+6a∣ t=1sec =−6m/s 2 The correct option is C. |
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| 15. |
Give five examples of first class lever whose mechanical advantage is less than 1 |
| Answer» 123 PLEASE MARK me BRAINLIEST ANSWER | |
| 16. |
Does wave transmit momentum? |
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Answer» magnetic WAVES COULD carry ORBITAL ANGULAR momentum. Such momentum can be transferred to macroscopic objects and can make them ROTATE under a constant torque.mark me as brainliest |
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| 17. |
Choose the correct one and explain why?? |
| Answer» DEXPLANATION:i HOPE this will be URE ANS | |
| 18. |
Explain the process of making solar cooker |
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Answer» Solar COOKING is DONE by means of the SUNS UV rays. A solar cooker lets the UV light rays in and then converts them to longer infrared light rays that cannot escape. Infrared radiation has the right energy to make the WATER, fat and PROTEIN molecules in food vibrate vigorously and heat up. |
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| 19. |
Emitter follower having Ri = 500 K Ω and R 0 = 20Ω. Assume h fe = b.For the emitter follower circuit with R S = 0.5K and R L = 5K, calculate A I , R i , A V , A VS , and R 0 .Assume h fe = 50, h ie = 1 K, h oe = 25 µ AV |
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Answer» most APPLICATIONS, common emitter and common collector amplifier CIRCUITS GENERALLY have HIGH input impedances. Some types of amplifier designs, such as the common collector amplifier circuit automatically have high input impedance and low output impedance by the very NATURE of their design. |
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| 20. |
Car A and 54 km/handCal B strants from olegin with speeds72 km/h respectively. Both Starts fromdigin at the same time. Find the distance blo A andB after 20 minutes,ЧCar BV.d 일Ny Car A |
| Answer» | |
| 21. |
Explain in detail the construction and working of a Van de Graaff generator. |
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Answer» A Van de Graaff generator is an electrostatic generator which uses a moving belt to accumulate electric CHARGE on a hollow METAL globe on the top of an INSULATED column, creating very high electric potentials. It produces very high voltage direct current (DC) ELECTRICITY at low current levels. |
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| 22. |
Applying De Broglie equation calculate the wavelength associated with the motion of an electron with velocity of 2.5 x 10^7 ms-1 |
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Answer» tion:Multiplying the mass and SPEED, we obtain the momentum of the particle: P = mv = 2.7309245*10-24 kg·m/s . If we divide the Planck constant by the momentum, we will obtain the DE Broglie wavelength: h/p = 6.6261*10-34 / 2.7309245*10-24 = 2.426*10-10 m . |
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| 23. |
Why is light considered white even if there are lights that can change their colour to a colour other than white |
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Answer» every LIGHT is not WHITE like -----1) CANDLE light 2) SUNLIGHT |
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| 24. |
Is there any gravitational force between a mask and headphones |
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Answer» tion:Since GRAVITATIONAL FORCE is inversely proportional to the square of the separation distance between the two interacting OBJECTS, more separation distance will result in weaker gravitational forces. So as two objects are SEPARATED from each other, the force of gravitational attraction between them also DECREASES. |
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| 25. |
Is it possible in Quantam physics Tha the human body id dived into 2 parts when entering a black hole? |
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Answer» I THINK its not true or does not defined because no one knows what is black HOLE ACTUALLY and after GOING there what the body becomes . |
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| 26. |
A stone is thrown with vertical direction with a velocity of 10 m/s. if the acceleration of the stone during its motion is 10 m/s ² in the downward direction what will be the height attained by stone and how much time will it take to recall there. |
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Answer» -INITIAL Velocity of stone = u = 10 ms-¹Acceleration of stone = a = -10 ms-²Let the maximum height attained by body = HHere, Negative SIGN indicates acceleration in downward direction.Using third equation of Motion,v² = u² + 2aH0² = (10)² + 2(-10)H-100 = -20HH = 5 m Again,H = ut + 1/2 at²5 = 10T + 1/2 (-10)t²5t² - 10t + 5 = 05t² -5t - 5t + 5 = 05t(t - 1) - 5(t - 1) = 0(5t - 5)(t - 1) = 0As we know that when product of two TERMS is equal to zero then either first term is equal to zero or second term is equal to zero. 5t - 5 = 0t = 1 sor,t - 1 = 0t = 1 sHence,Maximum height attained by body = H = 5 m Total time for body to come back = 2t = 2s |
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| 27. |
3.a) A metal ball of mass 60 g falls on a concrete floor from a vertical height of 2.8m and rebounds to a height of 1.3 m. Find the change in P.E. |
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Answer» -Mass of ball = m = 60 g = 0.06 KGACCELERATION due to GRAVITY = g = 10 ms-²Height COMING down = H = 2.8 m Height rebounds = h = 1.3 m While coming down Potential Energy,P.E. = mghP.E. = 0.06(10)(2.8)P.E. = 1.68 J Again while rebounds,Here, Acceleration will act in opposite direction of motion,g = -10 ms-²P.E.' = mghP.E.' = 0.06(-10)(1.3)P.E.' = -0.78 JNegative Sign INDICATES that Potential Energy is acting in opposite direction.∆P.E. = P.E. - P.E.'∆P.E. = 1.68 - (-0.78) ∆P.E. = 2.46 J |
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| 28. |
early detection:- in the nineteenth century, people put their ears to a railroad track to get an early warning of an approaching train. why did this work? |
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Answer» The speed of sound in metal is something like 5000 m/s, compared with 340 m/s in AIR. 2. In air, any sound spreads out in 3 dimensions, so the intensity reduces as (1/distance squared) from the source. In a metal bar, the sound is traveling along the length of the bar not spreading out into space, so the intensity reduces more much slowly with distance. In FACT, according to the simplest theory of sound transmission the intensity would not reduce at all however long the rail was, but obviously that is only approximately TRUE. This also explains why you have to PHYSICALLY touch the rail (or at least get very close to it) hear anything. If the bar was radiating a lot of energy into the air so you COULD easily hear the sound, the vibrations in the bar would not travel so far.r: |
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| 29. |
Given three vectors A = 24i + 33j, B = 55i - 12j and C = 2i + 43j (a) Find the magnitude of each vector. (b) Write an expression for the vector difference A - C. (c) Find the magnitude and direction of the vector difference A-B. (d) In a vector diagram show vector A + B, and A - B, and also show that your diagram agrees qualitatively with your answer. |
| Answer» THANKYOU for asking the QUESTIONEXPLANATION:here's ir answer in the ATTACHMENT | |
| 30. |
Please give the correct answer its urgent please please please please please don't abuse and spam |
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Answer» e. The child is not moving and is sitting in rest.2) True. Both work and ENERGY have same SI unit IE Joules.3) True. They have elastic P.E.4) True. The K.E. is directly PROPORTIONAL to speed.5) True.6) True.7) True.8) True. |
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| 31. |
4-60kw-h energy is produced in heater when a current of 3 amp flowsin it for 5 min. Find potential |
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Answer» I will SEND you a photo of this question don't WORRY mark ME in brainlest PLZ it is too EASY QUESTION |
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| 32. |
◆ Fill in the blanks.◆ 1. _____is based on the position and length of theshadow cast by an object.2. An object is said to be at___if its position does not change with time in relation to stationaryobjects.3. ____is the distance travelled by an object per unit time.4. A body is said to be in____,if it covers unequal distances in equal intervals of time.5.A____is a diagram showing the relation between two variable quantities, each measured along one of the pair of axes. |
| Answer» 2. REST3. SPEED4. Non-jniform MOTION5. GRAPH | |
| 33. |
Please solve it fast its urgent don't abuse and spam .... |
| Answer» SRY iam BUSY I will TRY to solve it LATER | |
| 34. |
A motorcyclist drives from A to B with a uniform speed of 120km h–1 and returns back with a speed of 60 km h–1. Its average speed in km h–1 is pls answer fast! need rn!!!! |
| Answer» PREFER to it CHILD!!!!!!!!!! | |
| 35. |
Solve this numerical....I will mark them brainliest....Please answer |
| Answer» PREFER to it CHILD!!!!!!! | |
| 36. |
THE VELOCITY OF A CAR INCREASES FROM 54 KM/PER HOUR TO 72KM/PER HOUR HOW MUCH WORK DONE IF MASS=1500 KG GIVE ANSWERS FIRST TO MARK IT BBRAINLIEST answer fasttt |
| Answer» INITIAL velocity (u) = 54×5/18= 15m/sFinal velocity (v) = 72×5/18= 20m/sMass of car (m) = 1500kgTo Find:-Work done (W).Solution:-As we KNOW that change of kinetic energy is called work done. so by USING the formula of kinetic energy .→Initial Kinetic Energy = 1/2mu²Substitute the value we get→ Initial Kinetic = 1/2×1500×15²→ Initial Kinetic = 750×225→ Initial Kinetic = 168750 JouleAnd Now Calculating the final kinetic energy→ Final kinetic = 1/2mv²Substitute the value we get→ Final kinetic = 1/2×1500×20²→ Final kinetic = 750×400→ Final Kinetic = 300000 JouleNow, Calculating Work doneWork done = Final Kinetic- Initial Kinetic→ W = 300000 - 168750→ W = 131250Joule∴ The work done is 131250 Joule. | |
| 37. |
If l is angular momentum of rotating body and he is its rotational kinetic energy then...... |
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Answer» or rotating BODY,GIVEN that:Moment of inertia = IWe know that,Angular momentum L=IωNow,Rotational kinetic ENERGY = 2(Iω 2 ) So, rotational kinetic energy = ( 2IL 2 )HENCE, ( 2IL 2 ) is the rotational kinetic energy.This answer may help you |
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| 38. |
Solve this numerical...I will mark them brainliest...Please answer |
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Answer» 10Explanation:5+5=106868686868686877681 |
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| 39. |
Solve this two numericals...I will mark them brainliest |
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Answer» kkyyk you to GRAPH wtfwecgjtsyiyirututitk titiykgkyktkykyktsteryieyeiyypypeyldlueylduldssgsylsykykslysyys askystkajtatjstmsymsyksylsylsylsylsylsyksykdyksyykykyskysyoskystkstksyk stksyksjtstjstjsyksksExplanation:lysyksylsylsyeuleulrluduldulrouryihtyltuet owieeroyprprprutpttuutprryrprwryprrwprypeprp petryrytutututututstttttsetdyfhfjfhffhdudhfudufjfdhdhdjdjdjsusus |
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| 40. |
In the electric circuit shown in the figure the value of R equals ......Ohms.VB=120 V IR50a. 20b. 40C. 60d. 80 |
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Answer» 60it is the ANSWER...HOPE IT HELPSMARK THE BRAINLIEST |
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| 41. |
suggest an activity to show that the rate of diffusion of liquid decrease with increase in density or attraction force between particles of the liquid |
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Answer» tion:Put a drop of blue ink slowly along the SIDES of the first beaker and honey in the same way in another beaker. Leave it UNDISTURBED. We observe that honey diffuses slowly as compared to ink. This experiment shows that lesser the DENSITY, faster the rate of diffusion.Please mark me as BRAINLIEST if it helps and FOLLOW me |
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| 42. |
How barometer is used for weather forecasting |
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Answer» A barometer is a scientific instrument used to measure ATMOSPHERIC pressure, also CALLED barometric pressure. ... Changes in the atmosphere, INCLUDING changes in air pressure, affect the weather. Meteorologists use barometers to PREDICT short-term changes in the weather.Explanation:Hope this answer is helpful for you.Thank you.PLEASE MARK ME BRAINLIEST |
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| 43. |
10. To focus the image of a nearby object on the retina of an eye (a) the distance between eye-lens and retina is increased(b) the distance between eye-lens and retina is decreased(athe thickness of eye-lens is decreased(d) the thickness of eye-lens is increased |
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| 44. |
Short note on twinkling of stars |
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Answer» In simple TERMS, twinkling of STARS is CAUSED by the passing of light through different layers of a turbulent atmosphere. Most scintillation effects are caused by anomalous atmospheric refraction caused by small-scale FLUCTUATIONS in air density usually related to temperature gradients. |
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| 45. |
Unit of impulse is(a) Newton (b) kg-m 6 kg-m/s |
| Answer» HEY mate here is the answerExplanation:a OPTION is correct ANSWER | |
| 46. |
एक वस्तु विराम से प्रारम्भ करते हुये पहले 10 सैकण्ड , m / s2 के त्वरण से चलती है तथा अगले 10 सैकण्ड एक समान वेग से चलती है तो वस्तु द्वारा तय कुल दूरी ज्ञात करें । If an object starts with a pause, the first 10 seconds moves with an acceleration of m / s2 and the next 10 seconds moves at a uniform velocity, find the total distance traveled by the object. |
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Answer» the first TIME to SEE you then the median AGE of course you can send you the other day I can do that for the first to COMMENT the moderators the other hand I will WORK |
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| 47. |
Define uniform circular motion and give example of it . why is it called accelerated motion |
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Answer» When an object moves in a circular path with uniform SPEED, its motion is called uniform circular motion,examples: movement of blades of a fan in CONSTANT speed, revolution of EARTH etc.. As the direction of VELOCITY is changing CONTINUOUSLY in uniform accelerated motion, that's why it is called accelerated motion. |
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| 48. |
Q. No olarMarksMARKS(A obtain and expression for electric field intensitydue to uniform charged Spherical shell |
| Answer» TION:तू शुरू करो कि मैं बकरी चराने नहीं तो हमारी जान जाता था दूसरा गाड़ी के पाटन के फायदे क्या-क्या पादरी देंगे फाड़ देंगे पाटन के पाटन के पाटन के पाटन के फोटो | |
| 49. |
Take any two points on the graph and find the slope of the graph |
| Answer» SLOPE of the above GRAPH is 5i.e accey.=5m/s2 | |
| 50. |
the length of suspended wire increased by 10^-4 of its original length when the stress of 10^7Nm^-2 is applied on it . calculate the young modulus of wire |
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Answer» tion:hope this will be HELPFUL to you and PLEASE mark my answer as the BRAINLEAST answer ❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️ |
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