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. |
which two circuit components are connected in parallel in the following circuit diagram a) R1 and R2 only b) R1 and A only C) R2 and V only d) R1 and V only |
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Answer» A is CORRECT answer.MARK IT AS BRAINLIEST |
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| 2. |
Why cant old people see near or distant objects clearly? |
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Answer» e the coordination of BRAIN with other parys of body DECREASE DUE to which the vision of old people is WEAK |
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| 3. |
Pls help me for this |
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Answer» hat ,y=sin(X) and x=3ttherefore we GET y=sin3t=>dy/dt= d(sin3t)/dt ** we KNOW {{{ d(sinxt)/dt = xsint }}}**=> dy/dt = 3cos3t or 3cosxhope this willl help you !mark it as BRAINLIEST if you like it :) |
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| 4. |
What are the conditions for which ohm law is applicable? |
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Answer» aw states that at constant temperature when all other physical parameters remains same, the current FLOWING through a conductor is directly proportional to the potential difference across its ends.So, for ohm's law to hold GOOD CONDITION if:i) Temperature remains constant.ii) Other physical parameters i.e. length of materials, area of cross-section, shape ETC. is kept UNCHANGED. |
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| 5. |
Temperature of nichrome heating element in an electric heater |
| Answer» E: Most heating elements use nichrome 80/20 (80 PERCENT nickel, 20 percent chromium) WIRE, ribbon or strip. Nichrome 80/20 is an ideal material, because it has relatively high resistance and forms an ADHERENT layer of chromium oxide when it is heated for the first time. | |
| 6. |
Define movement of inertia in hindi |
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Answer» स्था को कायम रखने की प्रकिया को INERTIA कहते हैं।The TENDENCY to be INERT is CALLED inertia. |
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| 7. |
Five works of sound waves |
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Answer» dy!The sensation felt by our ears is called sound. It is a form of energy which makes us hear. Sound is a longitudinal wave which consists of compressions and RAREFACTIONS travelling through a medium. Sound travels in the form of wave and a wave is a VIBRATORY disturbance in a medium which CARRIES energy from one point to ANOTHER WITHOUT there being a direct contact between the two points. |
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| 8. |
Which electrode does the free copper get drawn to ? |
| Answer» E copper is drawn to theelectrode connected to the negative terminal of the battery and getsdeposited on it. From the otherelectrode which is a copper plate, an EQUAL AMOUNT of copper gets dissolved in the solution. | |
| 9. |
Differentiate between parallel and series circuit. 2. Differentiate between electromagnet and permanent magnet. 3. What are the uses of an electromagnet 4. How electric room heater or an electric iron works? 5. Can we use same fuse in geyser and television set? Why? 6. Why does a compass needle placed near a wire gets deflected when an electric current is passed through it? 7. What are the factors affecting the strength of an electromagnet? 8. What will happen if a bar magnet is used in place of an electromagnet in an electric bell? 9. An electrician is carrying out some repairs in your house. He wants to replace a fuse by a piece of wire. Would you agree? Give reason for your response. 10. Draw and explain the working of an electric bell. |
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Answer» of combination in which if 1 circuit get disconnected others work but it is OPPOSITE in CASE of SERIES |
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| 10. |
Do iron filings freeze?why or why not? |
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| 11. |
Mass of the rocket is 50kg. Velocity of exhaust gases from the tail of the rocket is 5000m/s. The rate of consumption of feul per second just to rise the rocket from the ground |
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| 12. |
What are longitudinal waves? |
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Answer» dinal waves are waves in which the DISPLACEMENT of the MEDIUM is in the same direction as, or the OPPOSITE direction to, the direction of PROPAGATION of the wave. |
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| 13. |
Total magnetic moment and magnetic moment along z axis difference |
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Answer» netic field between poles (see figure for MAGNETIC POLE definition) is in the opposite direction to the magnetic moment (which POINTS from the negative charge to the positive charge), while INSIDE a current loop it is in the same direction (see the figure to the right). |
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| 14. |
What are the requisite for making standard resistors? |
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Answer» tan , also known as Eureka, is an alloy of copper and NICKEL , was discovered in 1887 , and has been used for resistance all along, APART from other applications.Its preference for resistance wire stems from high resistivity, low temperature coefficient of resistance, ability to attain GOOD resistance values in small size, stability, ability to draw in thin wires. It's melting point is also high at over 1200 degrees Celsius.Apart from resistance, constantan is also used in thermocouples.Manganin is an improvement over constantan, discovered in 1892. It is an alloy of copper , manganese and nickel. Its temperature coefficient of resistance is near zero, and this makes it ideal for ammeter shunt, and high precision resistance.Manganin is used in resistance standards, its melting point is around 1000 degrees Celsius, and maximum usage temperature is limited to 300 degrees Celsius. |
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| 15. |
When does displacement and distance be the same? what will be the displacement if a body covers a path in a circle? |
| Answer» DY keeps moving in the same direction then displacement and distance will be the same.If a body travels in a circle the displacement will be 0 when it completes ONE ROUND | |
| 17. |
Why clouds have a colour white |
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Answer» are white because LIGHT from the sun is white. As light passes through a cloud, it interacts with the water droplets, which are much bigger than the ATMOSPHERIC PARTICLES that exist in the sky. When sunlight reaches an atmospheric particle in the sky, blue light is scattered away more strongly than other colours, GIVING the impression that the sky is blue. But in a cloud, sunlight is scattered by much larger water droplets. These scatter all colours almost equally meaning that the sunlight continues to remain white and so making the clouds appear white against the background of the blue sky. |
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| 18. |
List two limitations each of extracting energy from (a) the wind (b) waves (c) tides |
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Answer» t is necessary for wind to BLOW at 15km/h as well as major parts of the YEAR |
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| 19. |
Answer it ???????????? |
| Answer» K my ANS the BRAINLIEST | |
| 20. |
Find the mass of the following 1). 6.022*10raise to 23 2). 1.5 mole of Co2 (carbon dioxide) molecule please answer fast |
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Answer» O2=12+16*2 GM =44gm1mole=6.022*10raise to 231.5mole=6.022*10(POWER) 23molecules X 15/10 =9.033*10 raise to the power 23 |
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| 21. |
I want readings for this experiment ! To draw the I-V charcteristics curve of a P-N Junction in forward bias and reverse bias . Please help me out ! |
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| 22. |
A charged particle with changing speed is subjected to a uniform magnetic field B perpendicular to it. which of the following quantities remain unchanged 1.kinetic energy 2. radius |
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| 23. |
Calculate the formula atomic mass of CaSO4.2H2O |
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Answer» each elementCa = 40S = 32O = 16H = 1Molecular massCaSO₄H₂O= > 40 + 32 + ( 16 × 4 ) + 2 [ ( 1 × 2 ) + 16 ]= > 40 + 32 + 64 + 2 [ 2 + 16 ]= > 40 + 32 + 64 + 2 × 18= > 40 + 64 + 68= > 104 + 68= > 172ANSWER:172 g |
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| 24. |
Acceleration o.2ms time 4min find distance |
| Answer» U= 0 then s= UT+ 1/2at^2 s= 0.2 ×4×60×4×60s= 1152m | |
| 25. |
Why should a electrician use plastic gloves while carrying repairs |
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Answer» cian uses PLASTIC gloves while carrying REPAIRS to PROTECT themselves from the electric current. |
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| 26. |
The undesirable property of an electrical insulating material is |
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Answer» esirable property of an ELECTRICAL insulating material is. Question Posted / jaikalam. 3 ANSWERS; 2016 Views; I ALSO FACED. |
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| 27. |
How does the gravitational force between two objects change if distance between them is tripled |
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Answer» /r^2If the DISTANCE is tripled then the force will decrease by 8 TIMES as F is INVERSELY PROPORTIONAL to r^2 |
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| 30. |
The procedure of the experiment to observe the scattering of light using hypo and H2 s o4 |
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| 32. |
Two bodies A and B have velocity ratio 2:1 what is ratio of kinetic energy |
| Answer» ENERGY directly proportional to VELOCITY square then the RATIO will be 4:1 | |
| 33. |
How are the colors of rainbow at equal distance from each other |
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| 34. |
an electric cell does 5J of work in carrying 10 C charge around the closed circuit the emf of cell is |
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Answer» is HELPS........ |
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| 35. |
An electrical fuse is rated at 2A what is the meaning of the statement |
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| 36. |
Plzz explain me the answer. How it is option 2) y-coordinate? |
| Answer» X as contant, differentiate give equationdy/dx =3(Rate of change of y with RESPECT to x= 3)Now, keeping y constantdy/ DY = 3dx/dydx/dy= 1/3Therefore rate of change of y-cordinate is FASTER | |
| 37. |
What is the correct frequency of sound which causes noise pollution? |
| Answer» G above 80 DB is NOISE | |
| 38. |
Please help me in this best answer will be markee as brainliest |
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Answer» OWER = ENERGY / TIME TAKENPOWER =60 WATT Energy =3000TIME =ENERGY/POWER3000/60=50 SECS |
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| 39. |
How does the drift velocity of electron changes if value of electric field applied across is it doubled |
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Answer» l the DRIFT velocity of the ELECTRONS CHANGE if the LENGTH of a the length of the CONDUCTOR the resistance will since there value |
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| 40. |
A 50 volt battery is connected across a 10 ohm resistor the current is 4.5A the internal resistance of battery is? |
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| 41. |
How many electrons make 10 coulomb of charge |
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Answer» trons can't be summed up to 1 COULOMB, what you actually mean is -1 Coulomb. So, 6.25 × 10^18 electronsmake up a total of -1 Coulomb of CHARGE. |
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| 42. |
Potentiometer wire of 1 m has a resistance of 10 ohm it is connected to 6 volt battery in series with the resistance of 5. Determine the emf of the primary cell which key for balance point at 40 cm at 40 cm |
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Answer» this HELPS you!!!! |
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| 43. |
Name the scientific name of the branch of Biology dealing with the study of heredity and variation |
| Answer» SIT is a branch of BIOLOGY CONCERNED with the study of genes, genetic variation, and HEREDITY in ORGANISMS | |
| 44. |
What is the role of fuse in an electrical circuit |
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Answer» he electric circuit have over load in the FUSE can SWITCH of AUTOMATICALLY not causing SHOT circuit and not GIVING any damage too |
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| 45. |
The magnetic moments align along each other to what energy? |
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Answer» hfbfjfkodldkrkrjjdkejdk |
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| 46. |
A black hole is an object whose gravitational field is so strong that the even light cannot escape from it to |
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Answer» ck hole is am MYSTERIOUS celestial OBJECT that it's gravitational force is so STRONG that even LIGHT can't escape from it , but what were you asking? |
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| 47. |
What will be the kinetic energy of a body when its mass is made 4 times and velocity is doubled |
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Answer» YOUR ANS ...Kinetic Energy = 1/2 mv^2Numbers are generally better for comparison than variables, so I’m going to assign a few.m = 1, v = 1Therefore KE_original = 1/2 * 1 * 1^2 = 1/2(It’s against my better judgment, but I’ll leave them unitless. Don’t leave numbers unitless unless they’re meant to be. UNITS make everything better. )If the mass is quadrupled, then the new mass is 4. If the velocity is DOUBLED, then the new velocity is 2. LET’s do the math.KE_new = 1/2 * 4 * 2^2 = 8 = 16 * KE_originalLet’s think about this…Energy is directly proportional to mass:QUADRUPLE the mass → quadruple the energyEnergy is directly proportional to velocity squared:Double the velocity → quadruple the energyWith a factor of 4 from both relevant variables, it makes sense that the new energy is 16x the original.HOPE IR WRKS |
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| 48. |
Out of the two, a toaster of 1kw and an electric heater of 2kw which has a greater resistor |
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| 49. |
What are the factors on which resistance of conductor depends upon |
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Answer» nce is the property of OPPOSING the electric current through anything. There are several factors on which resistance DEPENDS which are following :-i) Resistivityii) TEMPERATUREIII) Lengthiv) Cross SECTION areaHOPE IT HELPS:-) |
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