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. |
2. A particle is moving along a circle such thatcompletes one revolution in 40 seconds. In 2minutes 20 seconds, the ratio displacement isdistance(1) Zero(2)1/7 (3)2/7 (4)1/11 |
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Answer» Explanation:4 |
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| 2. |
What is the SI unite of force |
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Answer» Hey mate...SI unit of FORCE is NEWTON...Have a lovely day... |
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| 3. |
Why are floating generators used in the sea |
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Answer» the TURBINE is only MOVING part and rests out of reach of corrosive seawater MAINTENANCE cost are KEPT to MINIMUN |
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| 4. |
How is the intermolecular force of attraction in liquid different from that in gases |
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Answer» the INTER molecular spaces present in liquids is lesser than that in fluids.Due to this,gases EXHIBIT higher RATE of DIFFUSION than liquids.hope it helps and pls mark as brainliest:) |
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| 5. |
If an object is placed at a distance of 50cm. From a concave lens of focal length 20cm. Find position, nature, size of the image |
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Answer» :-U = -50 cm (Distance of the object)F = -20 cm (FOCAL length)v = ? (Distance of object) = -14.3 cm |
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| 6. |
A railway engine of mass 2 tons moving at a speed of 72 km/hr collides with a wagon at rest. After collision both have a common velocity of 36km/hr. Find the mass of the wagon. |
| Answer» 2 TONS or 2000 KG. | |
| 7. |
And the other along the Y-axis. Example 3.8A particle moves in the X-Y plane with a constantacceleration of 1.5 m/s in the direction making an angleof 37° with the X-axis. At t = 0 the particle is at theorigin and its velocity is 8-0 m/s along the X-axis. Findthe velocity and the position of the particle at t = 4:0 s.a = 1.5 m/s2370u = 8.0 m/sFigure 3.9 |
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Answer» 2578Explanation:for the first TIME we can VIDEO games with me for a while BACK and forth between US but I can't believe you can get a ride home from today and tomorrow |
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| 8. |
The unit of that quantity on which pitch of the sound depends is |
| Answer» HERTZ is the unit of the QUANTITY on which pitch of SOUND DEPENDS | |
| 9. |
Force between two identical spheres charged with same charge is F. Ir 50% charge of one sphere is transferredto second sphere then new force will be: |
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Answer» 3/4FExplanation:Let the CHARGES be q1 and q2 respectively. Where both are equal.Now q1'=q1'/2 and q2'=3q2/2(as I ADDED the half from one to another). Now the NEW Force is F'= KQ1'Q2'/r^2By doing the mathF'=3/4 KQ1'Q2'/r^2F'=3/4 F.(F=KQ1'Q2'/r^2 |
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| 12. |
A ball thrown vertically up with a speed v comesback to the starting point with speed v. The ratio of distance covered and displacement? |
| Answer» YAR ball SE BR BA BALLL khekte hgbv | |
| 13. |
How many electrons constitute coulomb of negative charge |
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Answer» intillion ELECTRONS |
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| 14. |
Write any two quadratic equations |
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Answer» 6x2+5x-2=02x2+x+9=0 |
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| 15. |
For a metallic conductor, current versus voltage graph is drawn at two different temperatures T,and T2. From the graph it follows(2) T, > T,(1) T, = T2(3) T, |
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| 17. |
Write some point about kingdom protists? |
| Answer» TION:this INFORMATION about KINGDOM PROTISTS | |
| 18. |
Why people having high blood pressure feel uncomfortable?? |
| Answer» PEOPLE having high blood pressure feel uncomfortable because it applies pressure on the arteries .Explanation:This disease is MAINLY CAUSED due to accumulation of carbohydrates in the arteries which causes blockage and the heart also pumps blood at a very high pressure which results in application of pressure on the ARTERY walls which leads to INFLAMMATION of the arteries . Thus causing very uncomfortable feeling | |
| 19. |
Please answer I need urgently |
| Answer» TION:SEE the ATTACHMENT...... | |
| 21. |
How balanced force can change the shape and size of a soft object |
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Answer» Balanced FORCE does not cause any change of state of an object. Balanced Forces can change the SHAPE and size of an object. For example: - When EQUAL forces are applied from opposite SIDES over a balloon, the balloon bursts or its shape/size changes.... |
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| 22. |
The initial odometer reading of a cab is 369 km. It travelled for 2 hours and the final odometer reading showed 469 km. Find the approximate average speed of the cab.: a) 14 m/sb) 11 m/s c ) 8 m/sd) 17 m/s |
| Answer» 17 m/s EXPLANATION:time=2 hrdistance=496-369 =127 kmspeed=distance/timev=S/t =127/2 =63.5 kmphkm/h⇒m/s-->multiply with 5/1863.5 kmph⇒m/s = 63.5×5/18 = 17.63 m/s =17 m/s [approx.]HOPE it HELPED and pls mark as brainliest:) | |
| 23. |
using second law of motion derive the relationship between a force and acceleration of A bullet of 10 gram strikes a sand bag at a speed of 103 metre per second and get embedded after travelling 5 cm calculate the resistive force exerted by the sand on the bullet and the time taken by the bullet to come to the rest |
| Answer» FORCE= -1060. 9N and TIME= 9.7*10^-4 secExplanation: | |
| 24. |
Maximum displacement of a partical from its mean position is called |
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Answer» amplitude is the MAXIMUM displacement of a PARTICLE from its MEAN POSITION |
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| 25. |
For a body angular velocity w a vector is equals to ICAP - 2 j cap + 3 k cap and radius vector r vector is equals to ICAP + 2 j cap + k cap then its velocity is |
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| 26. |
A coil of area 5 square cm means ? |
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Answer» The area of CROSS section of the COIL' s wire is 5 square CM. |
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| 27. |
Whai is uniform circular motion? |
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Answer» The CIRCULAR motion with a constant SPEED is KNOWN as uniform circular motion.hope it help |
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| 28. |
Discuss three ways of minimizing friction , giving the reason why eaxh work |
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Answer» We should USE lubricants to reduced friction Explanation:POLISHING, ball baring, STREAM lining is reducing METHODS of friction |
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| 29. |
If vector A = 6i - 8j then 4A magnitude has |
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Answer» 4a=24i-32j |
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| 31. |
Slope of diatance-time graph shows? |
| Answer» SPEED. EXPLANATION:Slope= change in y/change in X = distance/time = speed If it were displacement-time graph, the ANSWER would be VELOCITY. | |
| 32. |
This the question ...i need a quick answer |
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Answer» I hope it will HELP YOUPLEASE MARK me as a BRAINLIEST ANSWER |
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| 33. |
When two surface or object rub against each other then friction is created . |
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Answer» HEY MATE HOPE THIS HELPS IF SO PLS MARK AS BRAINLIESTFriction is the resistance to motion of one object moving relative to another. It is not a fundamental force, like gravity or ELECTROMAGNETISM. Instead, scientists believe it is the result of the electromagnetic attraction between charged particles in two touching surfaces.Scientists began piecing together the laws governing friction in the 1400s, but because the interactions are so complex, characterizing the force of friction in different situations typically REQUIRES experiments and can't be derived from equations or laws alone.For every general rule about friction, there are just as many exceptions. For instance, while two rough surfaces (such as sandpaper) rubbing against each other sometimes have more friction, very smoothly polished materials (such as plates of glass) that have been carefully cleaned of all surface particles may actually stick to each other very strongly. Types of frictionThere are two main types of friction, static friction and kinetic friction. Static friction operates between two surfaces that aren't moving relative to each other, while kinetic friction acts between objects in motion.In liquids, friction is the resistance between moving layers of a fluid, which is also known as viscosity. In general, more viscous fluids are thicker, so honey has more fluid friction than water.The atoms inside a solid material can experience friction as well. For instance, if a solid block of metal GETS compressed, all the atoms inside the material move, creating internal friction.In nature, there are no completely frictionless environments: even in deep space, tiny particles of matter may interact, causing friction.Coefficient of frictionTwo solid objects moving against each other experience kinetic friction. In this case, the friction is some fraction of the perpendicular force acting between two objects (the fraction is determined by a number called the coefficient of friction, which is determined through experiments). In general, the force is independent of the contact AREA and doesn't depend on how fast the two objects are moving.Friction also acts in stationary objects. Static friction prevents objects from moving and is generally higher than the frictional force experienced by the same two objects when they are moving relative to each other. Static friction is what keeps a box on an incline from sliding to the bottom.Applications of frictionFriction plays an important part in many everyday processes. For instance, when two objects rub together, friction causes some of the energy of motion to be converted into heat. This is why rubbing two sticks together will eventually produce a fire.Friction is also RESPONSIBLE for the wear and tear on bike gears and other mechanical parts. That's why lubricants, or liquids, are often used to reduce the friction — and wear and tear — between moving parts. |
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| 34. |
What is friction and give eg |
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Answer» tion:Friction is a CONTACT force that restricts tendency of motion .For INSTANCE, If a force is applied on a block it will not move untill it GENERATES enough PUSH to overcome static friction |
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| 35. |
40. A positive charge particle with charge q is moving with speed vin a region of uniform magnetic field B at the instant shown in figure. An external electric field is to be applied so that the charged particle follows a straight line path. The magnitude and direction of electric field required are respectively |
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Answer» I don't KNOW........................ |
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| 36. |
If y equals to x cube then the dsquare y by DX square |
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Answer» n :We KNOW that,d/dx (xⁿ) = n xⁿ⁻¹Now, y = x³ [ given ]Differentiating both sides w.r. to X, we getdy/dx = 3 x³⁻¹or, dy/dx = 3 x²Again, differentiating both sides w.r. to x, we getd²y/dx² = 3 * 2 x²⁻¹∴ d²y/dx² = 6x |
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| 37. |
What will happen to the unused kneaded flour if it is kept in the open for a day or two |
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Answer» It will go bad,maybe DEVELOP a stinky ODOUR and colour.There MIGHT be several microbes growing on it and the dough COULD certainly never be used again. |
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| 38. |
5 example of atmospheric pressure with satement |
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Answer» there are many examples for atmospheric pressure in our daily life for example FIRST example is that lizards can stick on the walls because Neha suction pads below there feet the suction pads behave like due to atmospheric pressure the lizards can stick on the walls this is only ONE example the rest examples I will SEND you later please follow me and also so say THANK you please please please mark me as the brainliest |
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| 39. |
The train starts from rest with an acceleration of 2m/s*2.a man who is 9m behind the train runs with uniform speed and just manages to get into the train in 10 sec .the speed of the man is |
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Answer» 10.9 m/sExplanation: |
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| 40. |
Error in measurement of sides of rectangle is 1% find the error in measurement of its area |
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| 41. |
Find the new force of all between two object when masses of both the object gets half and distance between them is reduced to 4 times. |
| Answer» 16 timesExplanation:F₁=GM/R₂F₂=GM/(R/4)²F₁:F₂= GM/R² : GM/(R/4)²GM cancels on both sidesF₁:F₂= 1/R²: 1/(R²/16)R² cancels on both sides leavingF₁:F₂=1:16The force increases 16 timeshope it helped and pls mark as BRAINLIEST:) | |
| 42. |
The speed of a projectile at its maximum height is √3/2 times its initial speed. The angle of projection is? |
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Answer» 30°Explanation: |
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| 43. |
I want some ideas for solve numerical |
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Answer» to solve the NUMERICALS first you read your TEXT BOOK from which you are SOLVING your NUMERICAL |
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| 44. |
the direction of contact force acting on a body is not necessarily perpendicular to the contact surface true or false |
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Answer» falseExplanation:direction of CONTACT force is ALWAYS perpendicular to the contact surface.hope it helped and PLS MARK as brainliest:) |
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| 45. |
Mitochondria are power house of cell |
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Answer» HOPE THIS HELPSIF SO PLS MARK AS BRAINLIESTMitochondria are known as power house of the cell because they generate ATP, the ENERGYCURRENCY of the cell. TERMINAL oxidation TAKES place through oxidative phosphorylation. This produces ATP. Even the reduced coenzymes produced in cytosol through glycolysis, transfer their reducing power to MITOCHONDRIA for ATP synthesis. ATP synthesised inside mitochondria provides energy for all cellular activities including over coming tendencey for entropy. Hence, known as power house of the cell. |
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| 46. |
a police in search of thief travels 10m towards north, 18m towards south and finally 10m towards west. find the displacement of the police in m |
| Answer» 18 metreExplanation:18m-10m=8m8m+10m=18m.....that's all....... | |
| 47. |
What is the least velocity with which a cricket ball can be throuwn through a distance of 100 m? |
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Answer» Explanation:Least VELOCITY - MAXIMUM RangeR = U2 sin2x/2g100 x 19.6 = u^2u = ROOT of 1960 |
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| 48. |
A gutka is placed on a rough slant bottom 4.0 m long. When the top end of the floor rises 1.0 m above the earth If it goes, the gutka starts sliding. Calculate the coefficient of static friction. |
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Answer» isussjensidnejdkdos |
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| 49. |
By means of a transformer what can be increased or decreased |
| Answer» HEY MATE here it's your answer.the amount of electric CURRENT or VOLTAGE...hope this helps you | |