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. |
A child on a swing 1m above the ground at the lowest point and 6m above the ground at the highest point. The horizontal speed of the child at the lowest point of the swing is approximately. |
| Answer» 4.16m/sExplanation:under ROOT 2gh formula2×9.81×1 =4. APPROXIMATELY. | |
| 2. |
How long will it take for a child running at 5 m/s to cover a distance of 200 m? |
| Answer» 40 secondsExplanation:s=ut 200=5tt=40 SECONDS | |
| 3. |
Why metals are called electropositive in nature and non- metals are called electronegative in nature? |
|
Answer» Explanation:Electropositivity is the TENDENCY to give electrons in a reaction in order to complete the octate. ELECTRONEGATIVITY is the tendency to gain electrons in a reaction in order to complete the octate. Metals have larger size with respect to non metals hence they are capable to lose ONE electron. As non metals have smaller size their electrons are held closer to the nucleus and therefore nuclear CHARGE is higher and they tend to gain electron to complete their octate.I HOPE THIS IS HELPFULTHANKS |
|
| 4. |
During the last second of its free fall, a body covers half of the total distance travelled. Calculate the height of the cliff. |
| Answer» 17 mExplanation: phsics 9TH - the ANSWER is 17 m. | |
| 5. |
Give example of situation to describe distance and displacement. |
|
Answer» e: the length of the ENTIRE path, or the length of the distance traveled.Displacement: the most DIRECT length between A and B. For example, if you hike up a MOUNTAIN and you travel a CURVY path 100 units, that is your distance. |
|
| 6. |
9. Explain the differences between speed and velocity. |
| Answer» HEY MATE here's your ANSWER,HOPE it helps you,✌Pls MARK as brainliest✌ | |
| 8. |
How to calculate the power used in our house |
| Answer» VOLTAGE×CURRENT × power factor =watt. TOTAL consumption is the product of voltage X current x PF x Hrs ==watt hrs÷1000 =1unit.itzDopeGirl | |
| 9. |
What is the name of the process of splitting sound |
| Answer» E of PROCESS of SPLITTING SOUND is PHONICS | |
| 10. |
Any 3 examples of simple harmonic motion in nature |
| Answer» | |
| 11. |
Question from dual nature...best answer will be selected as brainliest. |
|
Answer» V2=2V1hope this HELPS you to UNDERSTAND |
|
| 12. |
Heating effects of electric current in simple words |
|
Answer» When current flows through a conductor , heat ENERGY is generated in the conductor. The HEATING EFFECT of an ELECTRIC current depends on 3 factors :- The resistance, R of the conductor |
|
| 13. |
what is the name of the process of splitting sound(ferrite bead is using what process to remove noise alone) please tell me correct. |
|
Answer» A ferrite bead or ferrite CHOKE is a PASSIVE electric component that suppresses high-frequency noise in electronic circuits. It is a specific type of electronic choke. Ferrite beads employ high-frequency current dissipation in a ferrite ceramic to build high-frequency noise suppression devices. A ferrite bead to improve noise FILTERING must take into account specific circuit characteristics and the frequency range to block. Different ferrite materials have different properties with respect to frequency, and manufacturer's LITERATURE helps select the most effective MATERIAL for the frequency range. |
|
| 14. |
There are two charges +2*10^-6c and -3*10^-6c. The ratio of forces acting on them will be |
| Answer» FORCE = K Q1*q2÷ r^2 so F1:F2 = 1:1 | |
| 15. |
Can light pass through kerosen ? answer me in yes or no |
|
Answer» Moreover, KEROSENE is a denser liquid compared to WATER and hence LIGHT paths WITHIN it may get LOST. |
|
| 16. |
A box weighs 28 kg. The volume of the box is 320cc. Find the density of the box. |
| Answer» | |
| 17. |
A spherical capacitor has radius 12 cm and a charge of +2 micro columb is given to capacitor. Find the capacitance of capacitor |
| Answer» CAPACITANCE of a SPHERICAL CAPACITOR= 4* 3.14* 8.8 *10^-12* 12*10^-2Explanation: | |
| 18. |
what is the value of where the sum of current entering into a loop is 2A,10A and the sum current leaving the loop is 6A,1A |
|
Answer» APPLY KIRCHOOF'S JUNCTION LAW:- TOTAL input current = total OUTPUT current 10+2 = 6+1+I so,. I = 3 AMPERE ( ans).❤️ FOLLOW ME ❤️ ✌️ßáúryã❤️ |
|
| 19. |
ram and reghu are trying to move a table with a force of 50n and 70n in the same direction. what will be the net force ? explain the reason? |
| Answer» NET force will be 120 N.Explanation:Because both forces are applied in same DIRECTION so net force will be the sum of both forces . If ONE force was applied in one direction and another force applied opposite of FIRST force then the net force will be the difference of both the forces. | |
| 20. |
Write the formula of specific heat of the substance |
|
Answer» t CAPACITY and the specific HEAT are related by C=cm or c=C/m. The mass m, specific heat c, change in TEMPERATURE ΔT, and heat added (or subtracted) Q are related by the EQUATION: Q=mcΔT. Values of specific heat are dependent on the properties and phase of a given substance. |
|
| 21. |
What are the drawbacks of ohms lawPLEASE help me friends |
|
Answer» the resistance of material changes when the temperature change the resistance changes, the ratio of voltage ACROSS the resistor and current passes true will it not be a constant we will not get same no. always. nonlinear elements and union NATURAL NUMBERS are known as Ohm's LAW |
|
| 22. |
Can light pass through kerosene |
|
Answer» Moreover, KEROSENE is a DENSER liquid COMPARED to WATER and hence light paths within it may get lost.Explanation:follow me mark as brainest |
|
| 23. |
What is the electric potential due to non-uniformly charged solid sphere of radius R and volume charge density p=p(not)r where r is the distance from centre? |
|
Answer» I don't knowExplanation:FIRST MARK me as BRAINLEIST |
|
| 24. |
IF MASS OF THE BLOCK ATTACHED WITH SPRING IS 0.5 KG AND SPRING CONSTANT IS 5N/m what will be its time period |
|
Answer» refrr to the ATTACHMENT |
|
| 25. |
A train slows from 20 m/s to zero in 8 s. Find a. |
|
Answer» a=-2.5m/s^2Explanation:ENJOY :) |
|
| 26. |
What are the two types of convex lens |
|
Answer» concavo convex lensbiconvex lensExplanation:hope it helps youplzz mark me as UR BRAINLIAST ❤️❤️ |
|
| 27. |
Why cannot a sound be heard on the moon?how do astronaut s talk to one another on the surface of moon? |
|
Answer» No sound can be heard on the moon because there is no air in space. Space is a VACUUM. Astronauts talk to ONE another on the surface of moon through wireless sets that uses radio WAVES. This is because radio waves can travel through vacuum, whereas sound waves cannot travel through vacuum as they require material MEDIUM for their propagation.Hope it helps, please mark as brainliest if it does :) |
|
| 28. |
For distance =time2 we can use equations of motion |
| Answer» VELOCITY = vtime = Tdistance = SV = s/tv×t = s PLEASE MARK ME AS BRILLIANTandPlease FOLLOW Me... | |
| 29. |
I dont have question i have diagram only |
| Answer» EXPLANATION:SEND DIAGRAM then | |
| 30. |
1. The moment of a force of 10 N about a fixed point O is 5 N m. Calculate the distance of the point o fromthe line of action of the force. |
| Answer» REFER to the ATTACHMENT | |
| 31. |
What is known as current |
|
Answer» is a flow of ELECTRICAL charge carriers, usually electrons or electron-deficient atoms. The common symbol for current is the UPPERCASE LETTER I. ... Physicists consider current to flow from relatively POSITIVE points to relatively negative points; this is called CONVENTIONAL current or Franklin current.Hope it helps :) |
|
| 32. |
A car starts from rest and speed up to 108km/h in 6s. find the acceleration. |
| Answer» | |
| 33. |
PLEASE SOLVE THIS QUESTION QUICKLY |
|
Answer» hope this helps u mateExplanation:PB3O4 + 4HNO3 → 2PB(NO3)2 + PbO2 + 2H2Omark me BRAINLIEST |
|
| 34. |
A person holds a bundle of hay over his head for 30 minutes and gets tired.Has he done some work or not? justify your answer |
| Answer» WORK And ENERGY. A person holds a bundle of HAY over his head for 30 minutes and GETS tired. ... No work has been done because the bundle of hay remains stationary. That is, the displacement is zero.plzz mαrk αѕ вrαnlíѕt | |
| 35. |
Show the direction of the ray |
| Answer» HOPE it HELPS youplzz MARK me as UR BRAINLIAST | |
| 36. |
Question # 4 Pubertal Growth Spurt Occurs usuallyChoose the best option10-14y12-16y8-12yNothing fixed |
| Answer» | |
| 37. |
Which metal is used to soldering the wires? |
|
Answer» LeadThe most COMMON metals used in soldering WIRE are Lead (Pb) and Tin(Sn). Soft solder typically MELTS in the range of 190-900°F. Some ASSEMBLIES require the elimination oflead from the solder due to its toxicity and in those cases some other ELEMENTS would typically be substituted for the lead.HOPE IT HELPS YOU |
|
| 38. |
A train starts from rest and speed up to 240 m/s in 10min. find the acceleration. |
| Answer» 24 m/s EXPLANATION: Not NEEDED | |
| 39. |
a 10 gram Bullet is shoot from a gun of 5 kg with a velocity of 400 metre per second what is the speed of the recoil of the gun |
|
Answer» v(gun)= - 0.001*400/5v(gun)= -2 m/sExplanation:use CONSERVATION of LINEAR momentum V1. M1 + V2. M2 =0+0 i hope it will help U mark it as brainliest answer and follow me |
|
| 41. |
Q14 Two trains X and Y are running on parallel tracks with a speed of 72km/h and 54km/h respectively The driver of train X applies the brake and it comes to a stop in 10seconds. While the driver of train Y applies the brake and the train retards uniformly before coming to rest in 15 seconds. Plot distance- time graphs for both the trains. Also, calculate the distance travelled by each train after the brakes were applied Look |
|
Answer» Here, is your answerThe initial VELOCITY is GIVEN by U=72km/hrTo convert it into SI system ie. (m/s), multiply it with 5/18.Therefore,u = 72*(5/18)=20 m/sFinal velocity = 0 m/s (Since the train comes into rest)Acceleration, a= - 0.2 m/s^2We have to find the distance s.So by Third EQUATION of motion,v^2 = u^2 + 2aSS= (v^2-u^2)/2a= (0-400)/-0.4=1000 mie, the distance travelled by the train before it come to rest is 1000 mSTEP BY STEP EXPLANATION:Hope it would help you. And please mark it as brainliest and please FOLLOW me. |
|
| 42. |
Calculate the pressure exerted by cubical block placed over the surface m = 50 kg , length = 5=m |
| Answer» EXPLANATION: DR if vct7vr7vr V5. HY tnvy t6nc | |
| 43. |
how will you join three resisters of resistances 4 ohm, 6 ohm and 12 ohm to get an equivalent resistance of 8 ohm |
| Answer» | |
| 44. |
When monocromatic light travels from one medium to the other and the wavelength changes but frequency stays the same why |
|
Answer» frequency is the PROPERTY of the LIGHT. it doesn't vary with the mediumwavelength VARIES because the speed of the light variesExplanation:i'm not SURE |
|
| 45. |
A copper wire odd length 2m and area of cross section 1.7*10-6m^2 has a resistance of 2*10-^2 ohms. Calculate the resistivity of copper? |
|
Answer» A COPPER WIRE of length 2m and area of cross-section 1.7×10-6m2 has a resistance of 2×10-2ohms. Calculate the RESISTIVITY of copper. Thus, the resistivity of copper is 1.7×10-8 ohm-metre. Explanation: |
|
| 46. |
11. State which or the following situations are possible and give an example for each of (a) an object with a constant acceleration but with zero velocity.(b) an object moving with an acceleration but with uniform speed.(c) an object moving in a certain direction with an acceleration in the perpendicular direction. |
|
Answer» (a) not possible(b) SPEED can be uniform like movi with same speed while changing your direction so you have changing VELOCITY therefore an acceleration(c) ANGULAR acceleration is always in a direction perpendicular to the PLANE of motion tell me if it was helpful |
|
| 47. |
Which of the following is a vector Quantity. (a)Acceleration (b)displacement (c)Velocity (d)All of these. |
| Answer» | |
| 48. |
Which of the following show no significant change in its density when heated or cooled a. Solid. b.liquid c. Gas d.all of the above Answer correctly.Wrong answers will be reported |
|
Answer» GASES BECAUSE IT HAS NO VOLUME AND IT DOESN'T HAVE MANY THINGS. HOPE IT HELPS YOU |
|
| 49. |
6) Write any four examples of uniform circular motion |
|
Answer» a cyclist cycling on a CIRCULAR pathExplanation:as the wheels of cycle also WORKS rotational motion and while MOVING on circular path shows circular motion with uniform TIME periods.hope it helps |
|