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. |
An object which is taken as reference pointshould be(a) stationary(b) In motion (c) mone |
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Answer» stationaryExplanation:because MOVING OBJECTS will CHANGE POSITION |
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| 2. |
PMOTO ELECTRIC EFFECT 1. Light of wavelength 2200 Å falls on a metal surface. If 4.1 eV energy is required toremove the electron, find the stopping potential.1) 5-63 V2) 1.53 V3) 6.04 V4) 5.63 V |
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Answer» ___❤️________HERE IS UR ANSWER ❤️.OPTION → 2__________❤️_________→FOLLOW ME→MAKE MY ANSWER BRAINLIST→GIVE THANKS TO MY ANSWER→BE HAPPY ALWAYS__________❤️_________ |
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| 3. |
Ii. In the adjoining fig. XY LAC divides the triangular region ABC intotwo equal areas. Determine AX : AB.3Plz ans me properly.Don't put useless ans plzz guys |
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Answer» ━━━━━━━━━━━━━✦ Required Answer:♦️ GiveN:Here, is a triangle ABC XY is PARALLEL to AC, i.e. XY||ACar(️BXY) = ar(AXYC)♦️ To FinD:AX : AB ━━━━━━━━━━━━━━━━━━━━✦ How to solve ?The above Q. is based upon similar triangles concepts, especially we will use the relationship of SIDES and area of the triangle. Ratio of Area of two triangles is equal to square of corresponding sides of these triangles. So, let's find, All the necessary conditions LIKE reasons are also mentioned .━━━━━━━━━━━━━━━━━━━━✦ Solution:In △ ABC and △XBY,Now we know that in similar triangles, Ratio of area of triangles is equal to ratio of SQUARES of corresponding sides, Then,Now we can write it as,So, we need to find, AX : AB━━━━━━━━━━━━━━━━━━━━ |
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| 4. |
Provide me all the trigonometric identities |
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Answer» Sine Function:sin(θ) = Opposite / HypotenuseCosine Function:cos(θ) = Adjacent / HypotenuseTangent Function:tan(θ) = Opposite / AdjacentFor a given angle θ each ratio stays the same no matter how BIG or small the triangle is When we divide Sine by COSINE we GET:sin(θ)cos(θ) = Opposite/HypotenuseAdjacent/Hypotenuse = OppositeAdjacent = tan(θ)So we can say:tan(θ) = sin(θ)cos(θ) That is our first Trigonometric Identity.Cosecant, Secant and CotangentWe can also divide "the other way around" (such as Adjacent/Opposite instead of Opposite/Adjacent):triangle showing Opposite, Adjacent and HypotenuseCosecant Function:csc(θ) = Hypotenuse / OppositeSecant Function:SEC(θ) = Hypotenuse / AdjacentCotangent Function:cot(θ) = Adjacent / Opposite Example: when Opposite = 2 and Hypotenuse = 4 thensin(θ) = 2/4, and csc(θ) = 4/2Because of all that we can say:sin(θ) = 1/csc(θ)cos(θ) = 1/sec(θ)tan(θ) = 1/cot(θ)And the other way around:csc(θ) = 1/sin(θ)sec(θ) = 1/cos(θ)cot(θ) = 1/tan(θ)And we also have:cot(θ) = cos(θ)/sin(θ)السوال هو ما معنى الرخصة الشرعية ؟ وما الحكمة م 30thx+follow=inbox ✌ follow me ❤ |
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| 5. |
दी डाइमेंशंस ऑफ पावर |
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Answer» tion:Power is the rate of doing work; work is force times distance; Force is mass times acceleration; acceleration is distance per second per second. So, putting it all together we get the following units for power: ((distance/sec^2)*mass* distance)/sec = mass*distance^2/sec^3=PowerThe power P MEASURED in Watt is defined by the Energy PRODUCED in a specific time…P=Et Dimensions:M⋅L2⋅T−2T=M⋅L2⋅T−3..hope it helps mark as brainliest because I NEED only one brainliest answers to reach the NEXT rank so it's a humble REQUEST. FOLLOW ME✌️✌️ |
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| 6. |
Please solve the above question |
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Answer» the ANSWER to this too...WHOEVER is SOLVING PLZ HURRY up.... |
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| 7. |
A gas contained in a cylinder surrounded by a thick layer of insulating material isquickly compressed. (a) Has there beena transfer of heat? (b) Has work beendone? |
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Answer» (a) No.(B) Yes.Explanation:(a) There's no any transfer of heat ENERGY, as the cylindrical VESSEL is surrounded by an insulating material, which doesn't ALLOW heat transfer.(b) Work is always DONE when a gas is compressed by any external agent, no matter what type of system is there. |
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| 8. |
8. A parallel beam of light of intensity I is incident normally on a plane surface whichabsorbs 50% of the incident light. Thereflected light falls on B which is a perfectreflector, the light reflected by B is againpartly reflected and partly absorbed and thisprocess continues. For all absorption by A,absorption coefficient is 0.5. The pressureexperienced by A due to light is |
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Answer» Explanation:Radiant pressure formula goes like-(i) When light is completely absorbed,(ii) When light is completely reflected, where, = INTENSITY of INCIDENT light = speed of light = absorption coefficient (0.5) = reflection coefficient (1 - a = 0.5)Now, we only have to find radiation pressure on SURFACE A.At FIRST time, For the light which is absorbed, For the light which is reflected, At second time, because intensity halved after first reflection with = 0.5 For the light which is absorbed, For the light which is reflected, And hence so on...Now addition of all the radiation pressure by light absorbed-Now addition of all the radiation pressure by light reflected-Hence,Total radiation pressure, |
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| 9. |
Find the resultant of two unequal forces acting at right angles to each other |
| Answer» TION:let forces be F1 and F2 respectively as GIVEN F1 is not equals to F2given they are perpendicular so angle between them is 90 degrees formula of resultant of 2 force vectorsresultant = √(f1^2+F2^2+2.F1F2 COS theta)theta is 90resultant is √(f1^2+f2^2+2.f1.f2 *0)so resultant is √f1^2+f2^2 | |
| 10. |
Name the diffrent apparatus where we are using the convex and concave lend |
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Answer» concave lenses are used for correcting myopia and convex lenses are used for correcting hypermetropia concave lenses are used in a VARIETY of TECHNICAL and scientific production convex lenses are used in BINOCULAR and TELESCOPE |
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| 11. |
A stone thrown vertically upwards went up 98 m and came down. How long was it in the air? |
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Answer» Final Velocity of stone,v=0 because after ATTAINING the maximum HEIGHT it will come at rest and begin to fall down.Initial velocity,u=98m/sAcceleration due to GRAVITY,a= -9.8 m/s because the motion of ball is OPPOSITE to the direction of the ACCELERATION caused due to gravity.∴ Using first kinematical equation, we getv = u + at0=98+(-9.8)t-98= -9.8t∴ t = -98/-9.8∴ t=10 secondsBy using second kinematical equation, we gets = ut + 1/2 at^2∴ s = 98*10 + 1/2 *(-9.8)*10*10∴ s = 980 + 1/2 * (-980)∴ s = 980 + (-490)∴ s = 490 mHope it helps |
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| 12. |
8. A person moves along the boundary of a squarepark of side 10 min 40 s. What will be themagnitude of displacement of the person at theend of 3 minutes?. explain it |
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Answer» 14.14 metresExplanation:Given :SIDE of the square = 10 metresTime taken to move around the square field = 40 seconds To find :Displacement of the person at the end of 3 minutes3 Minutes = 180 seconds 1 round = 180/40 = 4.5 roundsAt 4.5 ROUNDS the person will come to a point where the Displacement will be equal to the Hypotenuse of the right angled triangle10²+10²=Hypotenuse²100+100 = Hypotenuse²200 = Hypotenuse²14.14 METRES |
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| 13. |
Name the diffrent appartus where we are using the convex and concave lend |
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Answer» Light that passes through a convex lens can be focused on a surface LIKE a screen. CONCAVE lenses are used for correcting myopia and convex lenses are used for correcting hypermetropia. concave lenses are used in a variety of TECHNICAL and scientific products. convex lenses are used in BINOCULARS and TELESCOPE. |
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| 14. |
Solve this worksheet |
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Answer» 1 = mealting 2= varpazation 3=? 4= soiledifetion 5= TEMPERATURE |
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| 15. |
Aliens are real there give briefly explication ( do you love space pls follow me) |
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Answer» YesExplanation:I think ALIENS are real because of our history that no ONE knows and HUMANS CREATED machines in past without KNOWING how to make that. Even now human cannot make these type of machines that they form in past |
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| 16. |
Please solve this asap!!! |
| Answer» E zero ERROR is negative zero error, it will be added to the MEASURED reading and when the zero error is positive zero error, it will be subtracted from the measured VALUE. Generally , the zero error will be coming in terms of circular SCALE division. Thus, correction for negative zero error =+[coincide division of circular scale ×L.C]plz follow me Vishesh | |
| 17. |
Prove that frequency error in moving iron ammeter can be eliminated when the time constant of meter and shunt are equal |
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| 18. |
The energy density of the magnetic crystal is Ux in a magnetic field.K sin’ e. Find the resonance frequency(a) 0, = (B +B.)(b) 0. =Y (B. +B.)(c) 0. = y B.(d) 0. =y? (B+B.) |
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Answer» the ANSWER is option B ,because the energy density of the crystal is UX in a MAGNETIC field |
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| 19. |
Is time travel possible explain briefly |
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Answer» tion:TIME travel to the past is theoretically POSSIBLE in CERTAIN general relativity spacetime geometries that PERMIT traveling FASTER than the speed of light, such as cosmic strings, transversable wormholes, and Alcubierre drives. |
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| 20. |
The resistance of wire having length of 0.6m diameter 0.4mm is 1.5 ohm. Find the resistivity of the conductor? |
| Answer» 1)resistivity=Rl/a [R=resistance ,a=area of the WIRE,LENGTH of the wire]=7.16*10^6 ohm-m2)a)E1=k*q1/d^2 [k=9*10^9 ,d =DISTANCE]PLS mark me as BRAINLIEST | |
| 21. |
Fill in the blanks 1. Chalk appears white because it ...... light ofall colours2. A sunflower appears yellow in sunlightbecause it absorbs the component3. Colours are produced in television by theprocess of colour4. The mixing of pigments is a ....... process.5. Green and blue lights mixed in equalproportion produce the colour ....... |
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Answer» THE BLANKS:1. Chalk appears white because it ABSORBS light of all colours2. A sunflower appears yellow in sunlightbecause it absorbs all the components of light except yellow.3. Colours are produced in television by the process of colour broadcasting with RGB colours (Red,Green,Blue)4. The MIXING of pigments is a Chemical process.5. Green and blue LIGHTS mixed in EQUALPROPORTION produce the colour cyan.Refer to the colour chart for Cyan Colour. |
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| 22. |
(1) Can displacement be zero ? if yes , give two examples of such situation |
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Answer» tion:YES, DISPLACEMENT can be zero. displacement is the shortest distance between initial position and final position. if both are same, then least distance would be zero. for example- if you travel from your home to SCHOOL and back to home, distance would be TWICE the distance between your home and school.Jun 3, 2017 |
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| 23. |
Objective Questions Choose the correct option.1. When viewed in red light a white roseappears to be(a) red(b) blue(c) black(d) white2. When blue light is subtracted from whitelight, the resultant colour is(a) red(b) cyan(c) magenta(d) vellow3. Red and blue lights mixed inequal proportionproduce(a)yellow(b)blue(c)cyan(d)magenta |
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Answer» 1. (a) red2. (d) yellow3. (d) magentaExplanation:1. The WHITE light consists of all the seven colors of the rainbow. Hence, if anything appears white, it means that it reflects each and every color. Now, though if only red light is incident on such objects (here white rose), it will REFLECT the red color.2. White light can be represented as a mix of three colors, red, green and blue. Now, if blue light is subtracted, shades of red and green REMAIN. For their COMBINATION, please refer to the attachment.3. Please see the attachment. |
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| 24. |
Displacement x=t^3-12t+10.The acceleration of particle when velocity is 0 |
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Answer» acceleration =12 m/s²Explanation: DIFFERENTIATE DISPLACEMENT x with respect to tSo dV=d(x) /dtdv=d(t³-12t+10)/dt=3t²-123t²-12=0t=2Now again on DIFFERENTIATING this EQUATION we get slope of acceleration a=dV/dta=d(3t²-12)/dt=6tSo we get a=6t. —(I) Now put the value of time as 2 in the eq(i) We get a=6×2So acceleration at velocity =6t is 12 m/s² |
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| 25. |
A mechanical wristwatch has a _____ instead of pendulum. |
| Answer» BALANCED WHEEL HOPE its HELPFUL | |
| 26. |
One sec is the duration in which outermost electron of ______ atom makes 9192631770 vibration |
| Answer» TION: ONE sec is the duration in which OUTERMOST ELECTRON of entire atom MAKES 91923631770 vibration.!!! | |
| 28. |
How does fan help us |
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Answer» A fan, or a breeze, helps by replacing this hot, humid air with cooler, drier air that allows for more EVAPORATION. Similarly, even without sweat, our BODY loses heat to the surrounding air simply by convection. ... The breeze from the fan carries that hot air AWAY and perpetuates the PROCESS, effectively cooling you off.please select my answer.please follow me. |
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| 29. |
Explain all the relation regarding ampere |
| Answer» AMPERE can ALTERNATIVELY be EXPRESSED in TERMS of the other units using the relationship I = P/V, and thus 1 A = 1 W/V or I = V / RExplanation: | |
| 30. |
a train travels some distance with a speed of 30km/h and returns with a speed of 45 km/h. calculate the average speed of the train |
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Answer» 36kmphExplanation:LET d/2 be the distance COVERED by train with a SPEED of 30kmph in t1 hours→t1=d/60it COVERS d/2 distance with a speed of 45km/h in t2 hours→t2=d/90average speed = total distance/total time=d/(t1+t2)=1/(1/60+1/90)=1/(3+2)/180=180/5=36kmph |
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| 31. |
Time period of a simple pendulum can be changed by changing _____. |
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| 32. |
E theColamnsMatchOFColumnOyColumn &Decomposition reactionDisplacement veractionCombination reactionDouble displacementreactioni RustN₂ (g) + Q Cg >2ÑOcgFe₂O₂ x H₂Oexcidation2KClO ) Meat IKCL a+802 C. Zn(s) + Co.Sou (aq) →2nsoy Cags + CUCS)AgNos + NachAgCl + NanogReductionGain of electioneLoss of eelectrone |
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Answer» what do you WANT to know please ASK clear I can't understand your QUESTION |
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| 34. |
10 g of ice at 0° C absorbs 5460 J of heat energy to melt and change to water at 50°C . calculate the specific latent heat fusion of ice.specfic heat capacity of water is 4200 J Kg -1 K-1 |
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| 35. |
2. The amplitude of a simple pendulum shouldnot exceed ...... during experiments. |
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| 36. |
An object is placed 10 cm away from the lens and power of the lens is 4 find the nature and position of the image formed |
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| 37. |
7. How many 176 ohm resistors (parallel) are required to carry current 5 Ampere on 220 volt line |
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Answer» -Potential difference (V) = 220 V Current (I) = 5 ATo find :-How many 176 ohm resistors in parallel are required to carry 5 ampere on a 220 volts ?Solution :-we KNOW that,HENCE the total resistance of circuit is 44 Ω.Now,We have to find out how many 176 Ω resistors should be connected in parallel to obtained a resultant resistance of 44 Ω.Let the number of 176 Ω resistors required be x.then,Hence,4 resistors of 176 Ω each should be connected in parallel. |
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| 38. |
Where should an object be placed in front of a convex lens to get a real image of the size of the object? A. At the principal focus of the lens B. At twice the focal length C. At infinity D. Between the optical Centre of the lens and its principal focus. |
| Answer» UR ANSWER MAY be the LAST ONE | |
| 39. |
A ray of light is incident at an angle of 60° on one face of a rectangular glass slab of thickness 0.1 m, and refractive index 1.5. Calculate the lateral shift produced. |
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Answer» Dear user, Please find below the solution to the ASKED query:Given here:i= 60°t= 0.1mn= 1.5now,Lateral shift= d= n = sin i / sin RSIN r = sin 60 / 1.5sin r = 0.5773r = 0.5773 = 35.26d = 0.1 × { sin (60-35.26) / COS 35.2} = 0.051 m.hope it helps you...please MARK it as a brainlist answer...also please rate THANKS and follow me...stay home STAY SAFE... |
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| 40. |
Draw magnetic lines |
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Answer» don't REPORT it MARK me in BRAINLIEST PLEASE |
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| 41. |
Three Resistors of resistance R1, R2 , R3 are connected in series. Find equivalent resistance. |
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| 42. |
Draw the neat diagrams of s and p orbitals |
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Answer» Refer the above ATTACHMENT for the answerExplanation:HOPE THIS ANSWER HELPS YOU ✍✍..PLEASE MARK IT AS BRAINLIEST... |
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| 43. |
Two pendulums of equal length but masses m and 2m. Find the ratio of their time period |
| Answer» DING to GIVEN QUESTION : | |
| 44. |
DEFINE: 1) Mass.2) Scalar.3)Vector.4)Distance.5)Displacement.6) Acceleration.7)Retardation. |
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Answer» A large body of matter with no difinet shape is called mass. vector -- These are the LIVING ORGANISMS which not cuases diseas own instead mode of trans MISSION of GERMS such as female anophles is CARRIER of malaria germ |
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| 45. |
2. How much heat energy is released when 5.0 g of water at 20°C changes into ice at 0°C ? Takespecific heat capacity of water = 4.2 J g- K-specific latent heat of fusion of ice = 336 J g-1. |
| Answer» TION:PLZ FOLLOW me BRO................... | |
| 46. |
5. On what factors does the resistance of a conductor depends ? |
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Answer» Explanation:The resistance of the CONDUCTOR depends on the following FACTORS: The TEMPERATURE of the conductor. The cross-sectional AREA of the conductor. LENGTH of the conductor. |
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| 47. |
Please solve these......... |
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Answer» you GET it......... |
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| 48. |
Judge the equivalent resistance when the following are connected in parallel(a) 1 ohm and 106 ohm, (b) 1 ohm and 103 ohm and 106 ohm .If battery of 10 V is connected in circuit . Find the current ineach resistance in circuit diagram (a) and (b)? |
| Answer» TION:R=5510I. 1=1/54.6I. 2=1/5.1I. 3=1/54.6I. 4=1/5.2 | |
| 49. |
The Hamiltonian of a particle having mass m in one dimension is described by H +-moʻr? +24x. What is the difference between the energies of the first two2m 2levels?H - E more2u(a) no-mo(b) ho+1(c) hoV24(d) hotmo |
| Answer» TION:SORRY I don't this ANSWER | |
| 50. |
1.True value of length of an object is 6.3.this length was measured by person a using a ruler 5.9 cm and person b using a vernier caliper as 5.65 cm find out the measurement which is more accurate? |
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Answer» tion:One METRE is ______________ cm.Answer: 100Five kilometre is ______________ m.Answer: 5000Motion of a child on a SWING is ______________.Answer: Periodic motionMotion of the needle of a sewing MACHINE is ______________.Answer: Periodic motionMotion of WHEEL of a bicycle is______________.Answer: Circular motion |
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