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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. |
A man is pulling a cart on a horizontal road with force of 100N making an angle of 60 degree with the road find horizontal and vertical components of this force |
| Answer» PLS MARK in BRAIN listExplanation:160 | |
| 2. |
The distance of the principal focus from the pole of the mirror is called focal lenght |
| Answer» TRUE STATEMENT MARK me as BRAINLIEST | |
| 3. |
The speed of a particle is constant ,can it have acceleration? |
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| 4. |
Are polar and axial vectors localised vectors? |
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Answer» s MARK me as BRAINLIEST and FOLLOW Riya20090 PLS |
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| 5. |
Sodium hydroxide +sulphuric acid. sodium sulphate+water |
| Answer» 2 NAOH + H₂SO₄ → Na₂SO₄ + 2 H₂OExplanation: | |
| 6. |
PAGE NO. 1016/19gaugewhen a ScrewCourt.leastof0.01mm is used to measurethe diameof a wire, the deadlingreading onthe sleeve isfoundto be mom andreading on thethimbleto be 27 divisionsbe¿Y what is the diameter of the wire inli) If the3200 ୧୪୪୦୫is +0.005 cm, ulis the correct diameter?is found |
| Answer» B he hvhjvhhhjjhvjjhjjvgvchvbn | |
| 7. |
If 110g of solute is present in 550g of solution. Calculate the concentration of the solution |
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Answer» ration = Mass of solution/Mass of solute= 550/110Concentration = 5 gHope it HELPS PLEASE mark this ANSWER as BRAINLIEST |
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| 8. |
Resistances of 4 ohm and 12 ohm are connected inparallel across a 9V battery determine:(a)the equivalent circuit resistor (b)the supply current(c)the current in each resistor. |
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| 9. |
A cylindrical conductor of length l and uniform area of cross-section A has resistance R. Another conductor of length 2l and resistance R made up of the same material will have area of crosssection equal to :(A) A/2(B) 3A/2(C) 2A(D) 3Aplease do explain.I will mark it as brainliest. |
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Answer» istance of a wire can be EXPRESSED as R=ρ AL A=ρ RL where,ρ - Resistivity - the factor in the resistance which takes into account the NATURE of the MATERIAL is the resistivityL - Length of the CONDUCTORA - Area of a cross-section of the conductor.From this relation, we OBSERVE that the length is directly proportional to the resistance and the area of cross-section is inversely proportional to the resistance.In this case, the length of the conductor is doubled (2L) and so the resistance will be 2R. For the resistance to remain the same as R, the area of cross-section is also doubled as 2A. |
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| 10. |
MONDA0Find for the given figure finddisplacement and initial velocityradius=2m |
| Answer» EXPLANATION:There is no FIG in the QUESTION | |
| 11. |
క్ర వాసం ఏమైనా ప్రశ్నలకు1.మిరర్రా వర్క్ లో ఎన్ని రకాలు ఉన్నాయి వాటిని వివరించండి? |
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Answer» sorry dude you should ASK it in google and MARK me BRAINLIEST and like my ANSWER...... |
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| 12. |
Find the resistancebetween x and y? |
| Answer» RESISTANCE X and y 4/3 is a RIGHT ANSWER the QUESTIONS | |
| 13. |
How can we time travel ? |
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Answer» Time dilation may be regarded in a LIMITED sense as "time travel into the FUTURE": a person may use time dilation so that a small AMOUNT of proper time PASSES for them, while a LARGE amount of proper time passes elsewhere. This can be achieved by traveling at relativistic speeds or through the effects of gravity. |
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| 14. |
SELECT THE CORRECT OPTION GIVING THE APPROPRIATE REASON: (4M) 1. Firemen uniform is coated with a plastic that is fire resistant. Identify the plastic from the given options. (a) Teflon (b) melamine (c) PET (d) Polyester2. In today’s world, where water is a scarce resource, which among the following irrigation methods is mostfeasible and sustainable?(a) Sprinkler system (b) Drip system (c) Tube well (d) Chain pump3. Carrier of malaria-causing protozoan is(a) female Anopheles mosquito (b) cockroach (c) housefly (d) butterfly4. In order to take precautionary steps to control dengue, we must take measures to stop the breeding of:(a) Aedes mosquito (b) Fleas (c) Fire ants (d) Anopheles mosquito |
| Answer» MELAMINE,TUBE WELL,FEMALE anophes MOSQUITO,anophes mosquito | |
| 15. |
Calculate distance travelled from the data. What is the acceleration in this case? |
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Answer» -----------------------------------------------------------------------------------------------------------------------------------¯\_(ツ)_/¯ -------------------------------------------------------------------------------------------------------------------------------------------¯\(°_o)/¯ ---------------------------------------------------------------------------------------------------------------------------------------------(´∇｀*) --------------------------------------------------------------------------------------------------------------------------------------------------●_● In ur case, the time is changing with zero acceleration, i.e.constant velocity. THUS, distance can be OPTIMIZED at a particular time instant. So, following are the different distances travelled at different instances of time :0 SECOND —> 0 metres2 SECONDS —> 40 metres4 seconds —> 80 metres6 seconds —> 120 metres8 seconds —> 160 metres10 seconds —> 200 metres12 seconds —> 240 metres14 seconds —> 280 metres ----------------------------------------------------------------------------------------------------------------------------------------づ￣ ³￣)づ . . . . . . . . . and... mark this answer as ❤BRAINLIEST❤ and... if u can...... then THANKS for reading................................................ :) |
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| 16. |
Show that focus and the focal plane of a concave mirror. |
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Answer» the DISTANCE between centre of CURVATURE and focus is CALLED FOCAL length. |
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| 17. |
The rising of sea water is due to gravitational pull of |
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Answer» I THINK it is DUE to the GRAVITATIONAL PULL of MOON. |
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| 19. |
1) How does lightning take place when two charged clouds come closer? |
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Answer» Heavier, negatively charged particles sink to the bottom of the cloud. When the positive and negative CHARGES grow large enough, a GIANT spark - lightning - occurs between the TWO charges within the cloud. This is LIKE a static electricity sparks you SEE, but much bigger. |
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| 20. |
Write an activity with required materials to shoq acid solution in water conduct electity |
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Answer» in the LESSON acids and bases .activity 7 .we know that dil.hcl produce electricity.it is because of HCl CONTAINS of H+ IONS |
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| 21. |
Four equal resistors of 5 ohm each are connected to form sides of a rhombus ABCD . If a battery of 6 volts is connected across A and C, calculate total resistance and total current in the circuit. |
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Answer» 10 A is the correct answer of this question.Explanation:The R1&R2 are ALSO in sequence, so their equation resistance is A.A=R1+R2=10 OHM The R3 and R4 are connected in sequence, and their EQ res is B. B=R3+R4=10 ohmThen, A and B are already in parallel.as just a result, eq res:R If 1/R =1/A +1/B Between A and C, R=5 ohm If A&C are wired to a 5 V resistor, The current in the circuit will then be V/R=1 A. When each branch's resistance is equivalent, the present in each division is SPLIT into two SEPARATE parts, 0.5 A each.Learn more:-brainly.in/question/18424081 |
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| 22. |
In a figure the device labelled is A. ammeter B.bulb C.rheostat D.voltmeter |
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| 23. |
What factor affect the mechinical advantage of a machine |
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Answer» From the last formula we DERIVE that the advantage of USING a lever DEPENDS on a ratio between lever ends' DISTANCE from FULCRUM. The more the ratio is - the more advantage we have and more weight we can lift.Explanation: mark as brainlist |
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| 24. |
Find the value of accelerationdue to gravity at the surface of earth(M=6×10²⁴kg R=6400km) |
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| 25. |
3. Find the volume of a liquid present in a dish ofdimensions 10 cm x 10 cm x 5 cm. |
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Answer» *To FIND the VOLUME of liquid in the volume of dishHence, Volume of DISH = Volume of liquid.*Convert cm³ into m³,We KNOW thatHence,The volume of liquid is 0.0005 m³.Give ❤️ (◠‿◕) |
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| 27. |
18.0 g of water completely vapourises at 100°C and 1 bar pressure and the enthalpy change in the process is 40.79 kJ mol–1. What will be the enthalpy change for vapourising two moles of water under the same conditions? What is the standard enthalpy of vapourisation for water? |
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Answer» halpy or ∆H of a reaction is DEFINED as the change in energy (more specifically heat energy) for one MOLE of a substance involved in a PROCESS.It is given that, the enthalpy change for 18g of water (at 100⁰ and 1 bar pressure) is =40.79 kJ mol–1 in the process of vapourisation.And for water, 18g is =1 mole (For H2O, the calculation of MOLAR mass: 2×1 + 16 = 18g)Hence, enthalpy change of vapourisation for 1 mole = 40.79 kJ mol–1 enthalpy change of vapourisation for 2 moles of water = (40.79 × 2) = 81.58kJ mol–1o Standard enthalpy of a process or ∆H⁰ is the enthalpy change of the process when involved substances are in their standard states.Hence, for water ∆Hvapourisation, ⁰ will be equal to =40.79 kJ mol–1 |
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| 28. |
Freezing of water takes place at ______atmospheric pressure and _________°c |
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Answer» the point at which WATER freezes as a FUNCTION of pressure. You can see that at ATMOSPHERIC pressure the freezing point of water is 273.2°Kelvin or 0°C or 32°F.hope it helps you mark as brainliest it |
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| 29. |
Find R between A and B of the circuit |
| Answer» IEST way to solve it, is by using folding symmetryjust fold the common part and double the resistance(as SHOWN in the ATTACHMENT)If u look at the circuit CLEARLY a WHEATSTONE bridge is formedhence the middle 2 r Resistor can be neglected Step 12r and 2 r are in series Rs =4 rStep 22r and 2 r are in series Rs =4 rStep 34r and 4r are in parallelRp=4r/2 =2 rRp=2 r | |
| 30. |
Of I. An inclinedplane is made at anangle of inclination of 30 degrees. A ball is thrown from the base of incline making an angle such that it strikes the incline perpendicularly. Find the angle of projection? |
| Answer» PROJECTION ANGLE will be 30 DEGREE | |
| 31. |
State true or false.. 1.The effect of a force may change by changing thedirection of the applied force.2.A force has to be specified both in terms of itsmagnitude as well as its direction.3.Frictional force is an example of a non-contact force.4.A gas filled balloon moves up. The upward forceacting on it is smaller than the force of gravity, i.e.(the downward acting force).5.We can reduce the pressure of a given force byincreasing the area over which the force acts.6.Inside a bottle filled with water, pressure is least at thebottom and the greatest at the surface of water. |
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| 32. |
what is the effect of periodic potential on the energy in a explain it basis of Kronig Penney Model |
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Answer» The POSSIBLE states that the electron can occupy are determined by the Schrödinger equation, In the CASE of the Kroning-Penney model, the POTENTIAL V(x) is a periodic square WAVE. A VIRTUE of this model is that it is possible to analytically determine the energy eigenvalues and eigenfunctions.hope this answer will help you ✌️♥️ |
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| 33. |
Why does a hen do not fly |
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Answer» tion:Modern chickens are bred as food or to produce eggs, so they do not have very large wings compared to their body. This means they can't produce ENOUGH lift to overcome their WEIGHT! |
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| 35. |
What is physics??????????Do Fast |
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Answer» the branch of SCIENCE CONCERNED with the nature and properties of matter and energy. The subject matter of physics includes mechanics, heat, LIGHT and other RADIATION, sound, ELECTRICITY, |
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| 36. |
Illustrations of an object or space activity with an explanation on which one of newton's law is being demonstrated. Plz give the answer if u know its urgent. |
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Answer» hello mate.. Explanation:You might have your students START this activity by rolling (or pushing) the ball on the FLOOR, and observing its constant VELOCITY once they let go of it. This is another application of Newton's First Law of Motion: A body in motion will continue in motion in a straight line UNLESS acted UPON by an outside force.hope you get your answer.... plz follow me... plz mark as brain list Answer.. |
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| 37. |
2। \ {(০২ সংখ্যক চৌম্বক প্রবাহরেখা 2000টি পাকসম্পন্ন একটি কুণ্ডলীর মধ্য দিয়েহকিম করে। কুণ্ডলীতে আবিষ্ট তড়িৎচালক বল 5V হলে সময় অবকাশের মান—(a) : s (b) (0.2 s (c) 0.02 s (d) (0,002s(va) একটি আদর্শ ট্রান্সফরমারের পাকসংখ্যার অনুপাত 10। যদি গৌণ কুণ্ডলীতে প্রবাহ10 A হয়, তাহলে প্রাথমিক কুণ্ডলীতে প্রবাহ হবে— |
| Answer» MJU assemes NHI ATA HAAA................. | |
| 38. |
Possibility of breaking the branch increases when a person goes to the tip of the branch. Give reason |
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Answer» Its due to moment of force.Explanation:Possibility of BREAKING the BRANCH increases when a PERSON goes to the TIP of the branch due to moment of force. Due to moment of force, branch tend to bend downward when we go at the tip of branch. |
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| 39. |
If a+b+c=0, then prove that a x b = b x c = c x a. |
| Answer» TION:if we a*b=b*c=c*a 0answer because it has the same VALUE of ANOTHER ALPHABET | |
| 40. |
At what situations images will not form |
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Answer» When the object is located at the focal point, no IMAGE is formed. As discussed earlier in Lesson 5, the REFRACTED RAYS NEITHER converge nor diverge. After refracting, the light rays are traveling parallel to each other and cannot produce an image.hey mark me as brainliest pls |
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| 42. |
A concave mirror cannot from |
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Answer» Virtual image cannot be FORMED from a virtual object. - When object is placed between pole and FOCUS, image formed by the CONCAVE mirror is MAGNIFIED, virtual and erect. ... -When object is virtual, image formed is real for concave surface I hope this will HELP youplease mark it as brainlist answer |
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| 43. |
2 electrons are transfered from body A to B . What are the charges on A and B |
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Answer» A is positively charged BODY. (I.E, it loosed 2 electrons) B is negativity charged body. ( I. e, it GAINED 2 electrons) |
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| 44. |
A hammer with a 500 gm head is used to be drive nails horzontally into awall .Aforce of 450n is required to penetrate the wall.Each blow should force the nail 5 mm into the wall. what should be the velocity of the hammer head to strike the nail? |
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Answer» tion:bro PLEASE give TIME taken for ONE blow of hammer and then I will ANSWER |
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| 45. |
what kind of energy is possessed by a stone lying on the top of house spammers keep away and if you give wrong answer I will I will report you |
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| 46. |
1. Name of disease that occur due to the bite of infected dog or monkey. |
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Answer» Here's your ANSWER mate EXPLANATION:RABIESHOPE IT HELPS. PLS MARK ME BRAINLIEST ☺️ |
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| 47. |
From the data calculate speed... |
| Answer» HOPE it HELPS you..EXPLANATION:please thanks my 25 answer in brainly... | |
| 48. |
What kind of energy possessed in a shooting arrow |
| Answer» KINETIC ENERGY IS THERE IN SHOOTING ARROW SSS.༒✠✟Hope it HELPS u✟✠༒ | |
| 49. |
What is ion Thruster? |
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Answer» An ion thruster or ion DRIVE is a form of electric propulsion used for spacecraft propulsion. It creates THRUST by ACCELERATING ions using electricity. ... The Deep Space 1 spacecraft, POWERED by an ion thruster, changed velocity by 4.3 km/s (9,600 mph) while consuming LESS than 74 kg (163 lb) of xenon... Pls follow me and have a nice day.. ❤️ Pls mark me as brainliest.. ❤️ |
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| 50. |
A body is thrown verticaly upwards with velocity u find the greatest height h to which. how much it will rises |
| Answer» BODY is thrown upward with an initial velocity 'u'.To Find Maximum height of the ball .ConceptsAt maximum height,velocity of the body becomes zero.Therefore,it starts falling down as it is accelerated downward the whole journey.Now, the question can be solved using two method ,the first method USES energy conservation which STATES :- In the ABSENCE of any external or nonconservative forces, mechanical energy of a body is conserved.=> The other method uses three formulas :- SolutionsUsing energy conservation :- At the bottom POINT, P.E. is zero while K.E. is zero at top point.Therefore , Using formulas => v = u + at => 0 = u - gt => u = gt => This time is called time of ascent.It is the time to reach maximum height. This is also equal to time of descent .=> Time of ascent = Time of descent.Therefore, total time spent in air is 2t = Now, h can be find out by using :- | |