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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. |
Formula for density in physics |
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Answer» density=mass/volumedensity=pmass=mvolume=v p=m/vExplanation:HOPE it HELPS you |
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| 2. |
Two wires of equal diameters of desistivities & Pl and P2 and lenghth x1 and x2 respectively are joined in series. The equavalent resistivity of the combination is what? |
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Answer» p1 x1 +p2 X2/ x1 +x2Explanation:EQUAL diameter means equal area in seriesR NET= R1+ R2p net (x1+x2)/A = p1+x1/A + p2+x2/Ap net= p1 x1 +p2 x2/ x1 +x2HOPE IT HELPS(◍•ᴗ•◍) DROP SOME THANKS IF IT DOES |
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| 3. |
a second's pendulum is taken to a place acceleration due to gravity falls to 1/4th. how much is the time period of the pendulum affected , it at all? Give reason. What will be its new time period? |
| Answer» TIME PERIOD of 'a' is inversely proportional to the SQUARE root of ACCELERATION due to gravity. Now, if the acceleration due to gravity falls to one-fourth, the time period will be DOUBLED. | |
| 4. |
The density of the material of cylindrical rod was determined by the formula d = m/π r2 l. The percentage error in m, r and l are 3%, 2% and 0.8% respectively. Calculate the maximum possible percentage error in determination of density |
| Answer» EXPLANATION:Given, Δm/m X 100 = 3Δr/r X 100 = 2Δl/l X 100 = 0.8Maximum PERCENTAGE error, Δd/d X 100 = Δm/m X 100 + 2Δr/r X 100 + Δl/l X 100 = 3 + 2(2) + 0.8 = 7.8% | |
| 5. |
A bus weighing 500 kg on a slope that makes an angle 60°60° with the horizontal the component of bus weight parallel to the slope is |
| Answer» TION:I HOPE it HELPS you PLEASE FOLLOW | |
| 6. |
A student heats a beaker containing ice and water. He measures the temperature of the beaker as a function of time and draws the following graph. i) What does the curve a, b represent? ii) What happens after 25 minutes? iii) What does the curve b, c represent? iv) at what temperature and time ice melts? |
| Answer» FIRST MAKE as brainliastExplanation:then i will have RIGHT ANSWER to your QUESTION | |
| 8. |
Which of the following is an example of uniform motion. (I) the motion of car in a busy road.(ii) motion of a satellite around a planet.(iii) motion of the moon around our planet.(iv) motion of arms of clock.options:-a.all of theseb. I and iic. ii and iiid. ii iii iv |
| Answer» CORRECT ANSWER is 'B'.Explanation:The motion of object is SAID to be a UNIFORM motion if the speed of the object is constant. Thus motion of car moving with constant velocity is an EXAMPLE of uniform motion. | |
| 9. |
a train starts from rest and accelerates uniformly at a rate and accelerates uniformly at a rate of 2 metre per second square for 15 seconds then sentences constant velocity for 300 seconds it then experiences a uniform retardation manth brakes are applied and comes to rest in 15 seconds find the maximum velocity reached the retardation the total distance travelled and the average velocity of the train |
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Answer» istance covered(s) = Distance during ACCELERATION(s 1 ) + distance during uniform motion(s 2 ) + distance during RETARDATION(s 3 )For acceleration,v=u+a∗tv max =2×10=20 m/ss=ut+(1/2)at 2 s 1 =(1/2)×2×10 2 =100 m |
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| 10. |
One of the rectangular components of a force of 40N is 20N. Find the othercomponent(A) 20、SN(B) 30、3N(C) 5、31(D) 35、3N |
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| 12. |
Do an activity of force acting on a current carrying conductor placed in a magnetic field perpendicular to the magnetic field. Give principle, construction, diagram and working of electric generator based on your syllabus. |
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Answer» I don't UNDERSTAND your questionkitna BADA QUESTION HAI |
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| 13. |
If a unit vector is represented by 0.5i^_0.8j^+ck^,then the value of c is: |
| Answer» MUKHERJEE FILMS nematicExplanation:keyshia leva6 | |
| 14. |
bus weighing 500 kg on a slope that makes an angle 60 degrees with the horizontal the component of bus weight parallel to the slope is (A) 3500sqrt(3) * N (B) 1500sqrt(3) * N (C) 2500sqrt(3) * N (D) 2500N |
| Answer» PLEASE FOLLOWING MEYOU following me I give you 25 POINTS dailypleasepleasepleaseExplanation: | |
| 15. |
Find theexpected weight ratio of theconstituent from the cuO molecule of copper oxide |
| Answer» EXPLANATION:ANSWER:Explanation:Weight of COPPER = 8.94 gWeight of Copper oxide = 79.545 g/molWeight of CUO = 79.545 g/molHope it helps | |
| 16. |
Certain quantity of water cools from 70°C in the first 5 min and to 54°C in the next 5 min.the temperature of the surrondings is |
| Answer» ACCORDING to Newton's law of COOLING, RATE of cooling is directly proportional to the TEMPERATURE DIFFERENCE between the body and its surroundings. where θ₀ is the temperature of the surroundings. then θ₁ = 70°C and θ₂ = 60°C and t = 5 minutes. then θ₁ = 60°C and θ₂ = 54°C and t = 5 minutes | |
| 17. |
3. It is the reason that gives a distinctive color and flavor of a meat, thus helping its preservation. The flavour, color and attractive glaze on the surface of the meat isdesired like in ham, bacon, and tinapa |
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Answer» Smoking – Meat is smoked to create a distinctive color and flavor, THUS helping its preservation. ... The HEAT generated during smoking DESTROYS the enzymes and dries the product artificially, thus PREVENTING the growth of molds and vegetative bacteria on the SURFACE. |
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| 18. |
The angle at which a ray of light be incident on the face of a glass prism of refracting angle60° such that it suffers total internal reflectionat the other face is (u of glass = vV2(A) sin - ( +sin 15°)-1(B) sin (V3 sin 15°)(C) Sin-1(V2 sin 15°)-1(D) sin(sin 15°) |
| Answer» HELLO have a WONDERFUL DAY | |
| 19. |
Is wood is more elastic than rubber |
| Answer» EXPLANATION: So, it can be said that for a given amount of stress, the strain PRODUCED in the steel is COMPARATIVELY smaller than the strain produced in the RUBBER. Therefore, with the help of Young's modulus, it can be CONCLUDED that steel has greater elasticity than rubber.Explanation:hope it's helpful. | |
| 20. |
Acceleration of a particle in one dimensional motion is given by a = 32 - 4v where v is velocity. Initially particle is at origin with velocity 4 m/s. Then value of displacement x will be?? |
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Answer» Write a Paragraph in about 80- 100 words on the following topics in a separate notebook. a) Internet – A Boon Or a Bane. b) Your visit to a place of interest c) Your Aim In Life d) Importance Of SPORTS And Games. e) Handsome is That Handsome Does. f) Where There Is A Will There Is A Way g) Importance 0f Tree Plantation h) Importance Of Moral Values i) Balanced Diet – A Healthy Way Of LIVING j) Qualities Of An Ideal Student Q 2 :-Reading is one of the good habits we can cultivate in ourselves from our childhood. Reading INDEED helps us score well in academics. Reading ensures our mental wellness, boosts our confidence and enriches our knowledge. Keep yourself engage in reading Newspapers,Story books and journals on daily basis. Read Chapter- 3 ‘Taro’s Reward’ and Chapter -4 ‘An Indian American Woman In Space’ from the book ‘Honeysuckle’ . Frame five questions from each chapter. Q 3: Make a short video on the topic COVID-19-We Shall Overcome!!! The video should be creative with a strong message on fighting COVID – 19 pandemic BRAVELY . You can mention the measures to be TAKEN to keep everyone safe . Q 4 :- Prepare a Book Jacket using an A3 sheet. Make a collage of author with the date of birth on the cover page. Write a quote of the author along with the picture. Give a title to your book.. SUBJECT :-MATHS DO IT IN SEPARATE NOTEBOOK 1. Define the following a) Factors , Multiples, Prime Numbers,Composite Numbers, Perfect Numbers, Twin Primes. b) Successor and predecessor of a number. |
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| 21. |
What are the two opposing energies involved in polarisation of a dielectric material ? |
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Answer» The extent of polarization depends on the relative STRENGTH of two mutually opposite FACTORS: the dipole potential energy in the external field TENDING to align the dipoles with the field and THERMAL energy tending to disrupt the alignment. |
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| 22. |
What is velocity ? With Examples. |
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Answer» Velocity is a vector EXPRESSION of the DISPLACEMENT that an object or particle undergoes with RESPECT to time . example of velocity is a car driving at 75 MILES per hour. |
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| 23. |
a bus starts from rest and moves with constant acceleration 8m/s^2.at the same time a car travelling with constant velocity 16m/s overtakes and passes the bus . after how much time and at what distance the bus overtakes the car |
| Answer» SORRY I don't KNOW | |
| 24. |
Solve it please 50 points |
| Answer» OPTION' :- D) 26.5m/s | |
| 25. |
37. Total mechanical energy E of an object of mass m, at a height h above the ground is given by the relation 2. E = mgh + 2 m Find the dimensions of p. (g = acceleration due to gravity). |
| Answer» P _ 24 OK BRO HI hi hi hi hi hi hi hi | |
| 26. |
How many significant figures are there in 0.00500? |
| Answer» 3 SIGNIFICANT NUMBERS 5 0 0 | |
| 27. |
How to find the circumference |
| Answer» PUT the FORMULA 2πrExplanation:PLEASE MARK me as BRAINLIEST | |
| 28. |
YSICS - VI PART - KINEMATICS - ID MUTUN The average velocity of a body moving with a uniform acceleration after travelling a distance of 3.06 m is 0.34 ms. If the change in velocity of the body is 0.18 ms-, then its acceleration is [ ] a) 0.01 ms-2 b) 0.02 ms-2 c) 0.03 ms-2 d) 0.04 ms-2 |
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| 29. |
Difference between CFL bulbs and LED bulbs |
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Answer» tion:The primary DIFFERENCE between the CFL and LED BULB is that LED bulbs are more durable and has long life. 5. SIZE of LED bulb is usually SMALLER than a CFL bulb. ... The UPPER part of the CFL bulb is made up of glass and if it breaks down, then the glass of 15-watt CFL bulb has to be replaced |
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| 30. |
Every relative is dimensionless |
| Answer» OPTICAL density is the RATIO of the speed of LIGHT in two media. As optical density is the ratio of two SIMILAR physical quantities, therefore it is the dimensionless QUANTITY. | |
| 31. |
the wavelength of light coming from the sodium source is 589 nm. what will be it's wavelength in wate |
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Answer» The wavelength in water is λ=λ0μwhereλ0 is the wavelength in VACUUM and μ is th refractive INDEX of water. THUS, λ=5891.33=4443nm. |
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| 32. |
If y=(3x+2)(2x-1), then find dy/dx |
| Answer» TION:cbjdhrhfbbjcnhjnfbdhrbsb | |
| 34. |
a magnetic needle of magnetic moment 0.2A-m is placed in a region with uniform magnetic field 4T. the maximum torque experienced by the needle will be |
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Answer» magnetic needle of magnetic MOMENT 0.2A-m is placed in a region with uniform magnetic FIELD 4T.To FIND:Maximum Torque ?Calculation:The torque experienced by a magnetic needle in a magnetic field intensity is expressed as follows:'M' is magnetic moment, 'B' is Field Intensity and is the angle between the the magnetic moment VECTOR and the field intensity vector.Now, MAX torque is when = 90° , because that's the max value for sine.Putting the respective values:So , max torque experienced is 0.8 Nm. |
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| 35. |
WHEN NET FORCE IS EQUAL TO ZERO THEN IT IS KNOWN AS .. EQUILIBRIUM A. CHEMICAL B.THERMAL C.TRANSLAOTORY D.ROTATIONAL |
| Answer» TION:D = { 4, 9, 16 } into RULE method | |
| 36. |
Difference between 1at node and 4th antinode |
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Answer» The approximate distance between a node and the IMMEDIATE next antinode is ACTUALLY one-fourth of a GIVEN WAVELENGTH. |
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| 37. |
Find a vector having magnitude double of 3i+4j and direction same as 5i + 12j |
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Answer» 9dyxitxkgxyixtidyidtiztusurash hoditzuda7rxits8txitw8td8tt |
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| 38. |
A person runs along a circular path of radius 5m. If he completes 1/4 * t * h of the circle. Find the magnitude of the displacement vector How far the person ran (A) 5sqrt(2) * m , 2.5mm (B) 10m, 5 m (C) 5 m, 10m (D) 2.5pi * m, 5sqrt(2) * m |
| Answer» 10 m is the CORRECT answer of it is wrong TELL me the QUESTION againExplanation: | |
| 39. |
अपने घर से मोटरसाइकिल द्वारा ऑफिस जा रहे हैं रास्ते में जाम के कारण मुश्किल से पहुंच पाते हैं A) आप किस गति का अनुभव करेंगे b) इस गति को परिभाषित कीजिए c) इस गति को चित्र द्वारा पर्दशित किजाए |
| Answer» | |
| 40. |
A= 0.3i+ bj - 0.4k is na vector what is the value of b |
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Answer» Who have studied the CUSTOMS and practices of PRESENT day farmers and headers?a. Archaeologistsb. Scholarsc. Astrologistsd. None of theseOnly those GI RLS who can show ❤️❤️zph-ooci-yqs❤️ |
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| 42. |
Name the first satellite which was launched specifically for the purpose of X-ray astronomy? NOTE- Give answer according to question not gd mrng how u etc otherwise i will report ur answer. |
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Answer» Here is your ans. Explanation:The first ORBITING mission which was dedicated to CELESTIAL X-ray ASTRONOMY was Uhuru, launched in 1970 |
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| 43. |
which system tranfer energy to and from its surroundings by the process of heating or coolong and the process if mechanical work? |
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Answer» A REACTION or process in which HEAT is TRANSFERRED from a system to its surroundings is exothermic. A reaction or process in which heat is transferred to a system from its surroundings is endothermic. The FIRST law of thermodynamics states that the energy of the universe is CONSTANT |
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| 44. |
A black body is at a temperature of 5760 K. The energy of radiation emitted by the body at wavelength 250 nm is U₁,at wavelength 500 nm is U₂ and that at 1000 nm is U₃. Wine's constant, b = 2.88 × 106 nmK. Which of the following is correct ? [2016](a) U₁ = 0 (b) U₃ = 0(c) U₁ > U₂ (d) U₂ > U₁ |
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Answer» The energy of RADIATION emitted by the body at wavelength 250nm is U1, at wavelength 500nm is U2 and that at 1000nm is U3. WIEN's constant, b = 2.88 X 106nmK. |
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| 45. |
Define Force. . . . . . . |
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Answer» In PHYSICS, a force is any influence that, when unopposed, will change the MOTION of an object. ... Force can ALSO be described intuitively as a PUSH or a pull. A force has both magnitude and direction, making it a vector quantity. It is measured in the SI unit of ne |
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| 46. |
Explain reflection by plane mirror with appropriate diagram. |
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Answer» Each small portion of the extended object facing the mirror acts LIKE a POINT source. The INCIDENT RAYS AN and AQ are drawn from points A of the object. The corresponding reflected rays NA and QR are drawn applying the laws of REFLECTION. |
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| 47. |
What can you say about the motion of a body from the following distance- time graphs? |
| Answer» TION:মডেল অ্যাক্টিভিটি টাস্ক আমাদের পরিবেশ চতুর্থ শ্রেণি গুলির উত্তর লেখাে : ফুসফুসের কাজ করার ক্ষমতা কমে গেলে কী কী সমস্যা হতে পারে ? | |
| 48. |
Q.What is Hybrid engine? Explain |
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Answer» imply, a hybrid combines at least ONE electric motor with a GASOLINE engine to move the CAR, and its system RECAPTURES energy VIA regenerative braking. ... (This happens through the regenerative braking system.) Hybrids also use the gas engine to charge and maintain the battery. |
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| 49. |
A particle starts from rest at t = 0 and moves in a straight line with an acceleration as shown below. The velocity of the particle at t = 3 s is +4 1 Acceleration (m/s) 2 3 4 1 5 25 - Time (5) 2 ms -1 -1 4 ms 6 ms 1 8 ms? |
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Answer» A photo shoot is the process taken by creatives and MODELS that results in a visual objective being obtained. An example is a model POSING for a photographer at a studio or an outdoor location.Explanation:sorry for spamming your question. PLEASE DROP 30 THANKS I will return you back. |
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| 50. |
ANALYSIS OF IMAGE FORMATION USING CONVEX LENS THE FOLLOWING SHOULD BE NOTED-:1. Height of the object should be 2 cm2. Draw all cases in separate graph sheet3. In each case, measure height of image and calculate magnification4. After completing all cases tabulate them in the given format |
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Answer» I DINT UNDERSTAND the QUESTION can you again SEND |
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