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. |
The product of frequency & wavelength of a sound wave is equal to its what |
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| 2. |
Please find the net resistance in question 4 |
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| 3. |
The power of an electric heaters is 1500 watt. How much energy it consumes in 10 hours? |
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Answer» :Power = WORK / timeGiven :Power = 1500 WTime = 10 hrWork Energy is the capacity of doing workBy the formula :1500 W = work / 10 hr= > work = 1500 W × 10 hr= > work = 15000 Whr15000 Whr is the energy consumed .1 Whr = 3600 J15000 W hr = 15000 × 3600 J = 54000000 J = 5.4 × 10⁷ JANSWER : 5.4 × 10⁷ J is the energy consumed . |
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| 4. |
Potential energy is minimum then second derivative is positive.How? |
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Answer» al energy is MINIMUM BCOZ it can change it's SHAPE and SIZE at any tym |
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| 5. |
What is magnetic field? Draw the magnetic field lines around a current carry conductor |
| Answer» C field LINES naturally bunch together in regions where the magnetic field is the strongest. This means that the density of field lines indicates the STRENGTH of the fieldI hope it HELPFUL to youpleszz MARK as the brainlist | |
| 6. |
Why was the name black hole is given |
| Answer» OLE is an incredibly STRONG PLACE to be.The gravitation there is so strong that it even SUCKS light energy!!Due to this reason it is black there.So it is called a black hole. | |
| 7. |
What is Conservation of momentum ???? Tell answer fast bhaio or beheno or dosto |
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Answer» ation of MOMENTUM is a fundamental LAW of physics which STATES that the momentum of a system is CONSTANT if there are no external forces acting on the system. It is EMBODIED in Newton's first law (the law of inertia).I HOPE THIS HELPS U |
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| 8. |
A force of 4N act's on a body of a mass 40kg for distance of 2m . kinetic energy acquired by body |
| Answer» 20 is the correct answer THANK you Mark me as your BRAIN list and FOLLOW me | |
| 9. |
Name some common used shapes of magnets |
| Answer» HOES magnetbar magnetsphere MAGNET RING magnet CYLINDER magnet | |
| 10. |
Why is prism used for dispersion of light and not rectangular glass slab |
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Answer» white light is made up of all visible WAVELENGTHS , its COLOUR can be separated by this difference behaviour. When light passes through glass, it encounters two interfaces i.e. ONE enterin other is LEAVING... A glass SLAB is able to produce spectrum but a rectangular glass slab does not.I HOPE IT HELP YOU AND MARK AS A BRAINLIEST ANSWER..... |
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| 11. |
Difference between anthracite and bituminous in energy |
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Answer» ed Question: Anthracite (“hard”) coal vs Bituminous (“SOFT”) coal. Anthracite is a hard MINERAL coal, cleaner & hotter burning, lower pollutant contaminants, typically with a shiney surface like FLINT or obsidian.Bituminous coal is “soft” (literally) in the sense that it will easily LEAVE streaks when drawn against other materials, higher in sulphur and other contaminants that cause pollution if BURNED without controls. Looks like charcoal. |
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| 12. |
What does parallax error mean? |
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Answer» or caused in the APPARENT position of the object DUE to the viewing angle that is the other than the angle that is PERPENDICULAR to the object. |
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| 13. |
Give examples of random motion. |
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Answer» examples of random motion are :1. a football moving while playing.2. a insect or bug FLYING 3. a child running 4. a movement of an BUTTERFLY while flying.5. the movement of the fish in water6. the bird flying 7. the movement of the BALL in an unusual floor.8. the bat flying 9. football players while playing.10. the frog moving on the LAND. |
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| 14. |
Plese derive d sec^-1 x/dx=1/x√x^2-1 |
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Answer» ^-1(x-1/x+1)SUPPOSE (x-1/x+1) is pandd/dxsin^-1x=1/sod/dxsin^-1p1/ *d/dxpsubstituting the VALUE of P[x+1]/*d/dx x-1/x+1x+1/*[(x+1)*1-(x-1)*1]/(x+1)^21/ |
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| 15. |
A rectangular coil of length 8cm and breadth 5cm has 200 turns of insulated wire. Find the magnetic moment of the coil, when a current of 2a flow through it. |
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Answer» The magnetic moment is Explanation:GIVEN that,Length l = 8 cmBreadth B = 5 cmNumber of turns N = 200Current I = 2 AWe know that,The magnetic moment is the product of current, area and number of turns.Hence, The magnetic moment is |
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| 16. |
Hey frdzz i need help.what is sphere of influence???? |
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Answer» r AREA in which an individual and an ORGANISATION has the POWER to effect and EVENTS and the development. |
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| 17. |
In the following diagram the path of ray of light passing through a glass prism is shown along with various angles. state which angle is represented by angle of incidence the angle of emergence and the angle of deviation respectively. |
| Answer» F INCIDENCE = Yangle of EMERGENCE =Qangle of DEVIATION =PHOPE THIS HELPED ! | |
| 18. |
Atomic mass of gallium |
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Answer» ᴜ..... is your ANSWER |
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| 19. |
If power of lens is -5 dioptre find its focal length? |
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| 20. |
Define E.S.U of charge? |
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Answer» magnetism - What is the DIFFERENCE between emu and esu ... In the centimetre–gram–second SYSTEM there are two units of electric charge: the electrostatic UNIT of charge, esu, or statcoulomb; and the electromagnetic unit of charge, emu, or abcoulomb. ONE coulomb of electric charge equals about 3,000,000,000 esu, or one-tenth emu. |
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| 21. |
A wheel of radius 10cm can rotate freely about its centre .A string is wrapped over its rim and is pulled by a force of 5.0N. it is found that the torque produces an angular acceleration 2.rad/s² in the wheel . calculate the moment of inertia of the wheel . |
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Answer» n : The force ACTING on the wheel are (2) W DUR to gravity , (2) N due to the SUPPORT at the centre and (3) F due to tension . the TORQUE of W and N are separately zero and that of F is F.r . The net torque is Torque = (F).(r) T = (5.0 N) (10cn) = 0.50N-m The moment of inertia = Torque /angular acceleration = 0.50/2 = 0.24 kg-m² Answer ✔________________________________ |
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| 22. |
Three partical , each of mass m , are situated at the verticals of an equilateral triangle ABC of side L .find the moment of inertia of the system about the line AX perpendicular to AB in the plane of ABC . |
| Answer» N : Perpendicular DISTANCE of A from AX = 0 Perpendicular distance of B from AX = L Perpendicular distance of C from AX = L/2 Thus, the MOMENT of inertia of the PARTICLE at A = 0 of the partical at B = mL² , and of the partical at C = m(L/2)² , The moment of inertia of the THREE - particle system about AX is 0 + ML² + M(L/2)² = 5ML²/4 Now that the particle on the axis do not contribute to the moment of inertia . ____________________________ | |
| 23. |
State the physical property of ethyl alcohol |
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Answer» 's chemical formula is C2H5OH. Pure ethanol is a FLAMMABLE, colorless liquid with a boiling point of 78.5° C. Its low MELTING point of -114.5° C allows it to be used in ANTIFREEZE products. It has a pleasant odor reminiscent of whiskey. Its density is 789 g/l about 20% less than that of water.thanku |
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| 24. |
If an object has mass of 12kg . What is weight on Moon |
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Answer» ka ❤Here's UR ANSWER- We know that, MASSES on the moon become 1/6th of earth.so, 1/6 of 12 => 2.Hence, the weight on moon is 2kg.Hope it helps ✔ |
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| 25. |
A force acting on two object . the acceleration of the two object are different from each other .why? |
| Answer» KA ❤ ❤Here's ur answer- We know that, Now, from above formulae- we CONCLUDE that force DEPENDS on the product of two physical quantities i.e. mass and acceleration.So, in case the force may be same but acceleration can be DIFFERENT due to different masses.Hope it helps ✔ | |
| 26. |
Hello friends !! Find the moment of inertia of a solid cylinder of mass M and radius R about a line parallel to the axis to the cylinder and on the surface of the cylinder . _________ |
| Answer» UAL to that of a DISC | |
| 28. |
Why does temperature decreases with height in the troposphere |
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Answer» o HIGH...pressure DECEASES...according to Gay lussac's law...P ∝ Tso as pressure decreases temperature ALSO decrease.please mark BRAINLIEST.. |
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| 29. |
What is quark of an atom ? |
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Answer» re constructed of TWO types of ELEMENTARY particles: ELECTRONS andquarks. Electrons occupy a space that SURROUNDS an atom's nucleus. ... Protons and neutrons are composed of two types: up quarks and downquarks. Each up quark has a charge of +2/3. |
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| 30. |
Hiii any one are free ✌✌⛤⛤⛤⛤ A constant force acts for 5 second a body of mass 5 quitals and then ceased to act. during next 5 seconds the body describes 100m . find the magnitude of force. |
| Answer» CM = 5 quitalsNext 5 SEC thts t = 5 sec DISTANCE = 100mForce = mass * acceleration VELOCITY = d/t= 100/5= 20m/sNow acceleration = v - u / t= 20 - 0 / 5= 4 m/s ²F = mamass = 5 QUINTAL = 500 kgtherefore 500 * 4= 2000NHope this helps | |
| 31. |
Hiii any one are free please answer my question ✌✌⛤⛤A particle of 50 grams is acted by a force of 100 dynes and assuming that the particle starts from rest calculate the distance travelled and velocity after 20 seconds ???I will mark it as brainlist answer |
| Answer» TV= at = 1/50 *20=2/5 HOPE it HELPS you | |
| 32. |
2 charges placed at a distance experience a force of x Newton. what is the force between the charges when each charge is doubled and the charge is placed in a medium of dielectric constant 2.5 |
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| 33. |
How can you show that white light consist of seven colour |
| Answer» ITE light pass through Nicole PRISM due to spactrum it show saven COLOUR of light. | |
| 35. |
The distance of the Gunman from a cliff is 720 me. How much time will be take to hear an echo of gunshot fired by him.Let the speed of sound 330 M per second. |
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Answer» 2.18 seconds of time will be taken to hear an ECHO of the gunshot fired by the GUNMAN.Explanation:Distance of the Gunman from the cliff = 720 MTHE speed of sound = 330 m/sTime taken to hear the echo = tt = 2.18 seconds2.18 seconds of time will be taken to hear an echo of the gunshot fired by the Gunman. |
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| 36. |
Why pinhole camera are showing inverse image? |
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Answer» ge is very dim because thepinhole is so SMALL, but you can see it if the room is very dark. ... The reason a normal camera uses a lens rather than a pinhole is because the lens creates a much larger hole through which light can make it onto the film, meaning the film can be EXPOSED faster.hope this HELPS u MARK me the BRAINLIEST |
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| 38. |
Plzzz try this guys..its so urgent |
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Answer» s the ANSWER HOPE this helpedPlease MARK as BRAINLIEST |
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| 39. |
A Soundwave consists of a number of compression pulses one after the other.true or false |
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| 40. |
Pls answer this question with detail |
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Answer» s no change to the image distance in the eye when we INCREASE the distance of an OBJECT from the eye. To SEE CLOSER or distant object clearly, the eyes, due to its ability of accommodation, can increase or decrease focal LENGTH of its lens, so that the image is always formed at retina. |
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| 41. |
Why sun appear reddish in the morning? |
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Answer» sun which appears reddish in the morning is not actually the sun. It appears reddish.2. This happens because of the change in refractive index.3. When the sun is below the horizon, the light rays travel from rarer medium (VACCUM) to denser medium (Atmosphere) and therefore, it keeps on BENDING towards the normals.4. In this process, the colour of the sun changes everytime it gets REFRACTED and finally APPEAR in reddish colour. |
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| 42. |
explain why leaves of a negatively charged electroscope collapse if A positively charged glass rod is brought near the disc of the electroscope |
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Answer» u bring the NEGATIVELY charged object NEAR the top terminal, electrons will FLOW away from the top terminal, causing the leaves to BECOME LESS positively charged and so the leaves will drop closer to each other. |
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| 43. |
A man whose mass is 50kg moves up 15 steps each of height 15 cm |
| Answer» E exercizing?...jokes APART...plz POST a question DEAR...pleeassee!! | |
| 44. |
If a force of 5 n is applied on an area of 5m square then the pressure exerted is equal to |
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| 45. |
if you place any object between two plane mirrors how many images of the object do you notice?explore and find out why this happens and where it is applied in real time.illustrate it visually. |
| Answer» E IMAGES are FORMED | |
| 48. |
Light reflection and refraction 0 important questions with answers |
| Answer» U MEAN by 0 IMP QUESTIONS??-_- | |
| 49. |
An alternating current is represented by I = 30 sin 314t (in SI unit) find the maximum value of current and time period? PLEASE SOLVE IT FAST I REALLY NEED THE ANSWER!? |
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Answer» ng with I = IM Sin(wt)MAX current is 30Aw = 2π/T = 314 or T = 2*3.14/314 = 0.02sPlease mark as Brainliest |
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| 50. |
Two cencetric coils, each of radius 2πcm and no of turns one are placed at right angle to each other. The currents flowing in coil are 3 A and 4 A respectively. The magnetic field induction ( in Wb/m² ) at the centre of the coil is B×10⁻⁵ . Find the value of B. Urgent question...dont spam ! _____________________________________ |
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Answer» Given,The MAGNETIC field induction ( in Wb/m² ) at the centre of the coil is B×10⁻⁵ .Radius of TWO coils = 2πcm. = 0.02mCurrents in coils =>In one coil the current is 3 A andIn ANOTHER coil the current is 4 A respectively.plz refer to the attachment for the Answer hereRememberThe SI UNIT of magnetic flux is Weber/m² |
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