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. |
What is meant by Joule heating or ohmic heating? |
| Answer» EATING (also referred to as resistive or ohmic heating) describes the process where the energy of an electric current is converted into HEAT as it flows through a resistance. ... The heat is generated on the microscale when the conduction electrons TRANSFER energy to the conductor's atoms by WAY of collisionshope it was helpful to youmark me BRAINLIST please | |
| 2. |
Can you answer all of them |
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Answer» it has ALSO led me COMPUTER BOOK companies in flipkat and HISTORY to the internet in |
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| 3. |
A car increases its speed form 50km/hr to 100km/hr in 5sec. Find Acceleration of the car in SI unit. please dont give false answers. |
| Answer» ACCELERATION= 10km/hr=2.7m/sExplanation:SPEED= 50km/hrEnd speed=100km/hrTime=5sacceleration= speed increased/timea=50/5=>10 km/hr=2.7m/s | |
| 4. |
What distance should an object be place from a converging lens of focal length 15 cm to obtain an image three times the size of the object |
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| 5. |
What is relative permittivity |
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Answer» e permittivity is the factor by which the electric field between the charges is DECREASED RELATIVE to VACUUM. Likewise, relative permittivity is the ratio of the CAPACITANCE of a capacitor using that material as a dielectric, compared with a similar capacitor that has vacuum as its dielectric.hope it was HELPFUL to youmark me brainlist please |
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| 6. |
HIGHT OF A BOY IN AS AB IN ONE SYSTEM AND CD IN ANOTHER A C ARE NUMARICAL VALUE AN B,D ARE UNIT . IF A/C=100,THAN B/D |
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| 8. |
How is the psychological aspect related to health , population , and environment education ? |
| Answer» HI GOOD AFTERNOON have a good DAY BYE | |
| 9. |
Mention some characteristics of the class which shark belong |
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Answer» fishExplanation: |
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| 10. |
Ek x- yonit kitney mitar ke tul hota h |
| Answer» TENSION is described as the pulling force transmitted axially by the means of a string, a cable, chain, or similar object, or by each END of a rod, truss member, or similar three-dimensional object; tension MIGHT also be described as the action-reaction pair of forces acting at each end of said ELEMENTS. | |
| 11. |
time taken by a ray of light to travel through a glass slab of thickness 10cm and refactive index 1.5 will be (take c=3*10^8m/s) |
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Answer» -thickness=10cm=0.1mRefractive index=1.5speed of LIGHT in GLASS=?We KNOW NowTime TAKEN to TRAVEL through glass=thickness/Speed of light through glass |
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| 13. |
X 2. Rest -b. Motion c. Velocity d. Acceleration 5. An object appears lighter in water because one of the properties of matter= Pressure 1. Buoyancy c. Viscosity d. Surface tension |
| Answer» ANSWER: BuoyancyExplanation:hope it HELPED PLZ MARK BRAINLIEST | |
| 14. |
the optical illusion mirage take place when light a) goes from rarer to a dencer medium b) goes from a denser to a rarer medium |
| Answer» B is RIGHT. A is FALSE | |
| 15. |
@3)use idea of reflection to explain why the coin can be seen when there is water in the can |
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Answer» refraction is the bending of LIGHT when light rays travel from one medium to another. ... so, when we put the coin in the water, the light TRAVELS from AIR medium (less denser) to water medium (more denser) and therefore we SEE the coin more nearer to surface then it ACTUALLY is |
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| 16. |
The time period of sound is increased by 4 times. Find the ratio of the new speed to the old speed. |
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Answer» the RATIO is 4:3Explanation:PLEASE MARK me as BRAINALIEST |
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| 17. |
What is Concave mirror???? |
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Answer» d mirror is a mirror with a CURVED reflecting surface. The surface may be either convex or concave. Most curved mirrors have surfaces that are shaped LIKE PART of a sphere, but other SHAPES are sometimes used in OPTICAL devices☞Hope it's helpful to you ☺️❣️ |
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| 19. |
Find out the pressure exerted by a block of 5kg on an area of 30cm2 |
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Answer» 0.6N/cm²Explanation:Pressure = Area/Force Where, Area = 30cm² Force = 5KG or, 50N (approx.)= 30/50= 0.6N/cm² NOTE:Here the force is in kg we have to convert it into to Newton.Conversion of kg to Newton1kg = 9.81NBut we TOOK the approx value of 9.81 by 10 |
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| 21. |
the optical illusion mirage take place when light a) goes from rarer to a dencer medium b) goes from a denser to a rarer medium c) goes from a medium of refractive index n to another medium of refractive index n itself |
| Answer» SORRY I don't KNOW the ANSWER PLEASE TRY to yourself | |
| 22. |
A slope of velocity time graph for a uniformly accelerated motion gives. a) Displacementb)Accelerationc)Distanced) SpeedPlease Dont give false answers. |
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Answer» A slope of VELOCITY time GRAPH for a uniformly accelerated MOTION gives.option B ( acceleration) |
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| 23. |
A wire of resistivity 10 ohm meter is stretched to double its length what is it's new resistivity |
| Answer» NCE = RESISTIVITY (LENGTH/Area)resistivity1/resistivity2 = length 1/length 210/resistivity 2 = L/2Lresistivity 2= 20 omh-meter | |
| 24. |
An electric bulb is labelled 40W 200V calculate the current flowing throughough it what is the resistance of filamenthow much heat developed if it work for 5 minutes |
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Answer» Human is a social ANIMAL which can help any other organs with his KNOWLEDGE and TECHNOLOGY. |
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| 25. |
What is motherboard?????? |
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Answer» A motherboard is the MAIN printed CIRCUIT BOARD in general-purpose COMPUTERS and other expandable systems. It holds and allows communication between many of the crucial electronic components of a system, such as the central processing unit and memory, and provides connectors for other PERIPHERALS |
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| 26. |
Name the compound... |
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Answer» s your ANSWER is here....IUPAC NAME is 3,3Dibromo-4,4Dichloropent-2-enepls mark as brainliest if HELPFUL |
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| 27. |
There is a hole in the bottom of tank having water. If total pressrue at bottom of the tank is 6.4 atmoshoperic. The velocity of efflux through a hole at the bottom is 3 atm (1 atmosphere = 10^(5)N//m^(2)) then the velocity of water flowing from holes is |
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Answer» hello MATE..here's ur answer..Pressure at the BOTTOM of TANK P=hρg=3×105Nm2P=hρg=3×105Nm2 P=hρg=3×105Nm2 and velocity of WATER v = √2gh√2gh∴v=√2p / √ρ =√(2×3×10^(5))√ (10^(3))=√600m/s.hope it helps.. |
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| 28. |
In a string the speed of wave is 10 m/s and its frequency is 100Hz. The value of the phase different at a distance 2.5cm will be |
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Answer» Speed of wave (v)=10m/sFrequecy(γ)=100HzWavelength(λ)= 10/100 = 1/10 ms2π PHASE is COVERED in 1/10mHence, at distance of 2.5 m, the phase is (2π×0.025)/0.1 = π/2 hope this will help U..... |
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| 30. |
2 An object of height 2 cm is placed at a distance of 15 cm from a concave mirror of focal length 10 cmDraw a scale diagram to locate the image. From thediagram, find the length of the image formed. |
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Answer» tion:by MIRROR formula , 1/ f = 1/v- 1/U .........(1)f = -10 CMV = ?u = -15 cmfrom (1), 1/ v = 1/f + 1/ u1/ v = 1/-10 + 1/ -15 = -1 / 10 - 1/15 = -3 -2 / 30 v = - 6 CM |
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| 31. |
What is the importance of thermometer |
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Answer» the thermometer is USED to measure temperature of a bodyif there is no thermometer we cannot measure the temperature of a bodyMercury and ALCOHOL are the thermometric liquidsthere are some types of THERMOMETERS like laboratory thermometer ,CLINICAL thermometer, etc... |
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| 32. |
3. Draw the diagram of DC generator |
| Answer» E!!HEY MATE!!Pls SEE the ATTACHMENT :)Hope will help you ! | |
| 33. |
a car is moving with a speed of 40 km per hour if the car engine generate 7 kilowatt power, the resistance in the path of motion of the car will be |
| Answer» FIRSTLY i THINK it is WRONG | |
| 34. |
Why time is very precious? |
| Answer» HI mate✌✌✌✌Explanation:Time is very precious because the time once wasted will never RETURN back..the second,minute,hour we are spending now will never be back.......Time and tide WAITS for none..That's why many consider the life as the very SHORT peroid...so be cautious about the time.... Time is precious✌✌Hope It Helps....... | |
| 35. |
Is hc verma or dc pandey is good for neet |
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Answer» As far as you READ both are GOOD:-)Explanation:But it's good if you study your NCERT thoroughly... |
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| 36. |
An object is moving in a circular path of radius R calculate the distance and displacement when it completes full circle |
| Answer» DISTANCE = 2 PIE RDISPLACEMENT = 0Explanation: | |
| 37. |
AC is not not suitable for electrolysis.why |
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Answer» ur answerRemember, electrolysis DEPENDS on controlling the voltage and current. Even if it were current-limited, alternating current (AC) would not be APPROPRIATE for electrolysis. Because the "CATHODE" and "ANODE" are CONSTANTLY switching places, AC produces explosive mixtures of hydrogen and oxygen. |
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| 38. |
What is C.G.S, F.P.S, M.K.S, SI ? |
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| 39. |
Find the net potential energy of the system of charges shown inthe adjacent figure. |
| Answer» SORRY I didn't GET a CHANCE to GIVE you ANSWER | |
| 40. |
Why the speed of an object need not be constant |
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Answer» because Velocity of a body is equivalent to a specification of its speed and DIRECTION of its MOTION. When velocity is constant, it means magnitude of velocity (i.e., speed) as well direction of motion of a body REMAINS constant or UNCHANGED with TIME. Speed is just a magnitude part of velocity. |
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| 41. |
An object of height 3cm is placed at 10cm from a convex lens which produces an image at 20cm from its optical centre. Calculate the magnification and Height of the image produced |
| Answer» MAGNIFICATION will be -2AND HEIGHT of IMAGE will be 6cmExplanation:m=v/um=20/-10m=-2 | |
| 42. |
Differentiate this please |
| Answer» TION:here is the SOLUTION and INTEGRATED FORM | |
| 43. |
A particle has a velocity of 5.5m/s due east and a constant acceleration of 1m/s2 due east. The distance covered by it in the sixth second of motion is = ? |
| Answer» S6 = u + a/2(2n -1)S6 = 5.5 + 0.5(11)S6 = 11mExplanation:hope the ANSWER will HELP you | |
| 44. |
Why unit vector has number when its magnitide is 1 |
| Answer» TION:Because a UNIT VECTOR, by definition, has a magnitude of 1, so if you want a unit vector in the direction of A you need to DIVIDE by its magnitude. | |
| 45. |
Why do we assume that force act on the body as long as the body remains in motion in case of work |
| Answer» HEY mate here is your answer.//✡✡✡✡✡✡✡✡✡✡✡✡✡✡✡✡✡✡✡✡✡✡✡✡✡✡✡✡✡Explanation:Isaac Newton's First Law of Motion describes the behavior of a massive body at rest or in uniform linear motion, i.e., not ACCELERATING or rotating. The First Law states, "A body at rest will remain at rest, and a body in motion will remain in motion unless it is ACTED upon by an external FORCE." This simply means that things cannot START, stop or change direction all by themselves. It requires some force acting on them from the outside to cause such a change. While this concept seems simple and obvious to us today, in Newton's time it was truly revolutionary. hope it helps you.//✔✔✔Please do mark me as Brainliest.// | |
| 46. |
A uniform metre scale is balanced at the 20 cm mark when masses of 100 g and 50 g are suspended fromthe 10 cm and 30 cm marks respectively. Calculatethe mass of the metre scale.(Ans. 16.67 g) |
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Answer» Weight of the scale = 66.66gfExplanation:Let's DENOTE the weight of the scale by 2.The scale is 20cm and 100gf is suspended on one end (0 mark) when balanced.So the weight of longer arm i.e. BC is balanced by 100gf So CW moment = A.C.W moment W × 30 = 20 × 100= 2000 / 30= 66.66gfA weight of 100gf should be suspended at ZERO mark.if it HELPS u click on THANKS❤️ |
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| 47. |
Can you call a physical quantity large or small without specifying a standard for comparison? Explain. |
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Answer» eaningless to CALL a physical quantity "large' or 'small' WITHOUT specifying a standardbfor comparison. For example, it is too vague to say that a piece of wire is "PRETTY short"; or, to say that it is "much longer than it is wide" is also not saying much. These words of daily life are usually so flexible and ill-defined that they are likely to be misunderstood.Physical sciences do necessarily BEGIN with what we detect by means of our senses. But then to DEVELOP a shared understanding, we must be able to agree in detail on what we have observed and to communicate it without being misunderstood. Therefore, observations in physical sciences are generally quantitative, that is, they are expressed with numerical values. Measurement is the process of estimating the ratio of a magnitude of a quantity to a unit of the same type. The result is expressed as a positive real number and the unit, where the real number is the ratio. |
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| 48. |
Imagine a light planet revolving around a very massive star in a circular orbit of radius r with a period of revolution T. On what power of r will the square of time period will depend if the gravitational force of attraction between the planet and the star is proportional to r^(-5//2). |
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| 49. |
A bus is traveling at 72 km/hr. Brakes are applied and the bus comes to a stop after 10 m. Find theretardation of the brakes. |
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Answer» Vi=72km/hr=72*1000/3600=20m/sVf=0T=10 m=10*60=600secSolutionVf=Vi+at0=20+a(600)-20=600aa=-20/600a=-0.333 m/s² |
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