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. |
3. A car at rest starts moving with linear uniformly increasing velocity. After 20 seconds it attains the maximum velocity of 80 m/s. What is the distance covered during this time interval?A. 200mB. 400mC. 800mD. 1600m |
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Answer» u=0m/sv=80m/st= 20sExplanation:LET the DISTANCE be sThus, V^2 - U^2 = 2as6400=2*40*s6400= 80ss=6400/80S=80 METRE |
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| 2. |
Explain rotary pump |
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Answer» pump : A ROTARY Pump is a type of pump that is CAPABLE of pumping more liquid than reciprocating pumps with the same weight. Rotary Pumps have working members which move in rotary or both reciprocating and rotary motions to displace a liquid. This displacement is because of the periodic CHANGES in the volume of cylinders and chambers filled by the liquid. The pumps are used for pumping oils and various other heavy viscous liquids. They are preferred for large torque values and low rational SPEEDS. The classification of these types of pumps depends on the types of rotating elements and they INCLUDE:Lobar pumpsScrew pumpsGear pumpsLabyrinth pumpsVane pumps and swash-plateRadial-plunger pumps. |
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| 3. |
Plz answer me write name of two supplimentary quantity with their units |
| Answer» PLANE ANGLE and solid angleExplanation:There units are radians and STERADIANS RESPECTIVELY | |
| 4. |
A particle starting from rest undergoes a rectilinear motionwith acceleration a.The variation of a with time t is shown below.The maximum velocity attained by particle during its motion |
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Answer» A particle starting from REST UNDERSTANDING your qualifications of association 30 MAXIMUM velocity of the particle PARTICIPANT MOTION to the 30 maximum |
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| 5. |
A particle of mass m strikes another particle of same mass at rest elastically after collision if velocity of one of the particle is 3i-2j them the other must jave velocity equals to |
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Answer» Explanation:Let MASS of each particle =mLet initial velocity one particle which is moving ==0And initial velocity of another particle which is at rest=After collision MOMENTUM of these particles =Where =Velocity of one particle Velocity of another particle Bu CONSERVATION of linear momentumInitial momentum=Final momentum after collisionSubstitute the values then we GET m/sHence, the velocity of other particle must have =m/s |
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| 6. |
A particle start from rest at t=0 and x=0 to move with a constant acce |
| Answer» TION:your QUESTION is INCOMPLETE... | |
| 7. |
A particle of mass m having a charge q enters into a circular region of radius r with velocity v directed towards the centre.The strength of the magnetic field is b.Find the angle deviation in the path of the particle |
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Answer» a CIRCULAR reminds to velocity v and DIRECTION to the FIND the division PATH to the PARTICLE to the particle is the 70 degree |
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| 8. |
A particle moves along a semicircular path of 5 m what would be it distance to displacement ratio |
| Answer» 5:3Explanation:π r=5 mr=π×5 =1.5 m [APPROX.]displacement=2r =3 MDISTANCE =5 mdistance :displacement=5:3 | |
| 9. |
A particle is projected horizontally with a speed of 20 divided by root 3 metre per second |
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| 10. |
A particle moves along x axis in such a way that its x-coordinate varies with time according to the equation |
| Answer» COMPLETE the STATEMENT | |
| 11. |
A particle is projected with a velocity 49 m/s at an angle of 30 tothe horizontal calculate the maximum height ,time of flight ,the horizontal range? |
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Answer» Newton's second law says that when a constant FORCE acts on a massive body, it causes it to accelerate, i.e., to change its velocity, at a constant rate. In the simplest case, a force applied to an object at rest causes it to accelerate in the DIRECTION of the force. However, if the object is ALREADY in motion, or if this situation is viewed from a MOVING inertial REFERENCE frame, that body might appear to speed up, slow down, or change direction depending on the direction of the force and the directions that the object and reference frame are moving relative to each other. |
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| 12. |
A partical is projected at an angle of elivation alfa and after t sec it appears to have an angle of elivation beta seen from point of projection the initial velociry will be |
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Answer» A particle project angle of URINATION after Second to the have angle is POINT to the PROJECTION villiseri will be the initial point to the fixed point |
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| 13. |
A particle is dropped under gravity from rest from a height h (g=9.8)and it travels a distance 9h/25 in the last seconf ,the height h is |
| Answer» TION:HOPE that will be HELPFUL | |
| 14. |
An rl series circuit is connected across the ac supply.Voltage across the resistance is 30 v and across the inductancev is40 v. Voltage across the supply is |
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Answer» uuudhdhdhdhjdjshshsuisisjshdgdgdhdhjsjsshbdbdhdjdjidjdhdhdhdudjdbfbfhfhueiwiw |
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| 15. |
An object weights 10n in air.When immersed fully in water,it's weight only 8n the weight of the liquid displaced by the object will be |
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Answer» 2 NExplanation:By the principle that .:The BUOYANT force on a submerged object is equal to the weight of the fluid displaced.Hence the weight of the fluid displaced = Buoyant force exerted by water on the object = 10 - 8 = 2 N |
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| 16. |
An object weight 10n when measured on the surface of the earth what would be its weight |
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Answer» 10 NExplanation:If the body alderdy weighs 10 N,the MASS is 1 kg.on the SURFACE of the earth, g=10 m/s²therefore,it will weigh 10 N. |
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| 17. |
An object moving along the x axis with uniform acceleration of 4 m/ s |
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Answer» and moving object ALONG axis of the UNIFORM acceleration 88 metre PER SECOND UNIT for the moving |
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| 18. |
An electron beam of initial energy 18 kev moving horizontally is subjected to a horizontal magnetic field of 0.4 gauss normal to the initial direction. Calculate the vertical deflection of beam over a distance of 30 |
| Answer» ELECTRON beans is the 3048 GHOST NOVEL production calculate the virtual DIRECTION to be over distance | |
| 19. |
A motor converts energy from one form to another.Name the two forms in sequence. |
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Answer» motor CONVERT energy from the another NAME is SQUARE is your motor |
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| 20. |
A motor car travel at a speed 50km/hr. It makes a 90 degrees |
| Answer» BHAI PURA QUESTION LIKHA to KAR. | |
| 21. |
An activity to prove that dark colours are good absorber of heat |
| Answer» MARK me BRAINLIST ,PLEASE | |
| 22. |
Write name of two supplimentary quantity with their units |
| Answer» RADIAN-->radsteradian-->srhope it HELPED:) | |
| 23. |
Wave theory of lighttheory of light all problem |
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Answer» Wave-Particle Duality of LIGHT. Quantum THEORY tells US that both light and matter consists of TINY particles which have wavelike properties associated with them. Light is COMPOSED of particles called photons, and matter is composed of particles called electrons, protons, neutrons. |
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| 24. |
A force of 3 kg wt, is just sufficient to pull a block of 4 kg over a horizontal surface. What is the angleof friction |
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Answer» 3/4 is the ANGLE of FRACTION HOPE U will UNDERSTAND |
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| 25. |
Calculate the area of cross section of a wire of length 2m, its resistance is 25Ω and the resistivity of material of wire is 1.84*10-6 Ωm. |
| Answer» RESISTANCE = (resistivity*length)/area 25 = (1.84*10^-6*2)/area area = (3.68*10^-6)/25 area = (0.736*10^-6)/5 area = 0.1472*10^-6 area = 1.472*10^-7 m^2 Explanation: | |
| 26. |
Define drift vilocity |
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Answer» The drift VELOCITY is the average velocity that a particle attains DUE to an ELECTRIC FIELD. FOLLOW ME |
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| 27. |
A 200 metre long train is moving with velocity 20 metre per second the time taken by the train to cross a bridge of length 200 metre is |
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| 28. |
A long bar magnet has a pole strength of 10 a m if magnetic field at a point |
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Answer» B=1/pole strength * force.The MAGNETIC field is GOT by KNOWING the field value and substituting in this EQUATION. |
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| 29. |
A man can row at a speed of 4 .5 km per hr find average speed |
| Answer» UR QUESTION is INCOMPLETE | |
| 30. |
A 150 gram ball travelling at 30 metre per second strike the pal of a players and and its top in 0.05 second find the force exerted by the ball on hand |
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Answer» .......................... |
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| 31. |
A force (2i+j+4k) is acting on particle moving with constant velocity power delivered by force is |
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Answer» ........................................ |
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| 32. |
A gas leak detector is reading 10 percent of lel. If the explosive limit is between 2- 10 percent what is percentage of gas present i n area |
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Answer» ................................... |
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| 33. |
A force f = 20 + 10y acts on a particle in y direction where f is in newton and y in metrr |
| Answer» PLEASE COMPLETE your QUESTION | |
| 34. |
A force f=6i-8j+10k newton produces an acceleration of 1 m/s2 |
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| 35. |
Define Derived quantity plz answer the question |
| Answer» DERIVED quantity. any SECONDARY quantity, such as VOLUME, derived from a combination of base quantities, such as MASS, length, and time. | |
| 36. |
If 4*10^-3 J of work is done in moving particles pf charge 16*10^-6 C from infinity to a point P, calculate the potential difference at P. |
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Answer» 250W=q×V 4×10^-3=16×10^-6×V V=0.25×10^3 V=250 VOLT |
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| 37. |
6. The resistance of bulb filament is 100 ohm at a temperatureof 100°C. If its temperature coefficient of resistance be0.005°C. its resistance will become 200 ohm at a temperatureof(a) 500°C(b) 200°C(c) 200°C(d) 400°C |
| Answer» ANSWER is d, 400 C............ | |
| 38. |
Calculate the area of cross section of a wire of length 2m, its resistance is 25Ω and the resistivity of material of wire is 1.84*10-6 Ωm. 12. Why is tungsten metal used in bulbs but not in fuse wires? |
| Answer» RESISTANCE = (resistivity*length)/area25 = (1.84*10^-6*2)/AREAAREA = (3.68*10^-6)/25area = (0.736*10^-6)/5area = 0.1472*10^-6area = 1.472*10^-7 m^2Explanation:it is normal | |
| 39. |
What are the different types of motions |
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Answer» the types of MOTION are1.translatory motion2.rotatory motion3.vibratory motionExplanation:A body is SAID to be in motion if it CHANGES its POSITION with RESPECT to its surrounding. |
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| 40. |
Define Derived quantity |
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Answer» e !any SECONDARY quantity, such as VOLUME, derived from a combination of BASE quantities, such as mass, LENGTH, and time. |
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| 41. |
10. A block and tackle system has the velocity ratio 3. Draw a labelled diagram of the system indicating thepoints of application and the directions of load L andeffort E. A man can exert a pull of 200 kgf. (a) Whatis the maximum load he can raise with this pulleysystem if its efficiency is 60% ? (b) If the effort endmoves a distance 60 cm, what distance does the loadmove ? |
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Answer» 10. A block and tackle system has the velocity ratio 3.Draw a labelled diagram of the system indicating thepoints of application and the directions of load L andeffort E. A MAN can exert a pull of 200 KGF. (a) Whatis the maximum load he can raise with this pulleysystem if its efficiency is 60% ? (b) If the EFFORT endmoves a distance 60 CM, what distance does the loadmove ?10. A block and tackle system has the velocity ratio 3.Draw a labelled diagram of the system indicating thepoints of application and the directions of load L andeffort E. A man can exert a pull of 200 kgf. (a) Whatis the maximum load he can raise with this pulleysystem if its efficiency is 60% ? (b) If the effort endmoves a distance 60 cm, what distance does the loadmove ? |
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| 42. |
Distance(16+-0.4)m,time(4.0+-0.2)sec then find speed |
| Answer» 4 m/s APPROX..... DISTANCE.. 15.6 m ...TIME 3.8 SEC.... | |
| 43. |
Give an example where momentum becomes zero |
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Answer» plz mark it as BRAINLIESTwhen we drop a object from certain height so POTENTIAL ENERGY change into kinetic energyhence,when it REACH down its momentum BECAME zero |
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| 44. |
Compare the acceleration due to gravity at height of 16 km above the surface of the ear that at 32 km below the surface of the earth, given the radius of the earth is 6400 km. |
| Answer» FIND the value of the acceleration due to gravity at a height of 12,800 km from the surface of the earth Earth's radius = 6400 km. (ii) State Newton's LAW of gravitation and write the mathematical EQUATION describing itCBSE CLASS IX Science SA 2 (3 Marks)Ask for details Follow Report byExplanation:it is DIFFICULT | |
| 45. |
How synthesic fibers have changed our dsily life |
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Answer» they are chemical ,insect and wrinkle RESISTANT they are easily washablethey absorb very LESS waterPLS PLS PLS PLS PLS MARK AS BRAINLIEST..!!!!!!!!!!!!!!!!!!!\¥¥¥¥¥¥¥¥¥¥¥^€^°°®¥ |
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| 46. |
A 2m long wire has a resistance of 16ohm.what is the resistance of this wire if it is 1m long? |
| Answer» MAY it will be HELPFUL to you | |
| 48. |
A current of 5 ampere flow through each of two parallel long wire the wire 2.5 cm apart calculate force acting per unit length of each wire |
| Answer» 5 Explanation:5 PER UNIT LENGTH of each WIRE | |
| 49. |
A current of 1.5 a flows through a wire of 8ohm. Find the amount of heat produced in 10 minutes. |
| Answer» GIVEN thatThe HEAT PRODUCED in the WIRE is | |
| 50. |
A circular loop of radius r is kept in a uniform magnetic field |
| Answer» | |