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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. |
Magnetic field due to current carrying straight wire DERIVATION ✌️ |
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Answer» Explanation: MAGNETIC field due to CURRENT in straight wire Magnetic field on the perimeter of CIRCLE is tangential. ... Right hand thumb RULE If holding straight wire with right hand so that the extended thumb points in the direction of current, then curl of the fingers gives the direction of magnetic field around the straight wire. |
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| 2. |
A peice of ice is being heated in water and then into steam |
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| 3. |
The value of the electronic power of vaccum |
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Answer» Explanation: USING the upper LIMIT of the cosmological constant, the vacuum ENERGY of free space has been estimated to be 10−9 joules (10−2 ergs) PER cubic meter. |
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| 4. |
How does the Electric flux due to a point charge enclosed by a spherical gaussian surface get affected when it's radius is increased? |
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Answer» Explanation: How does the electric flux DUE to a point charge ENCLOSED by a SPHERICAL Gaussian SURFACE get affected when its radius is increased? ... That is, on increasing the radius of the gaussian surface, charge q remains UNCHANGED. So, flux through the gaussian surface will not be affected when its radius is increased. |
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| 5. |
FREE POINTSQ. What is electric current? |
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Answer» An ELECTRIC current is the RATE of FLOW of electric CHARGE past a POINT or region. |
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| 6. |
check whether the equation F = m a ( F is force , m is mass , a is acceleration) is dimensionally correct. |
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Answer» YES,F=m *a is CORRECT where F is force ,m is mass and a is acceleration. |
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| 7. |
Momentum is a vector quantity why |
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Answer» Answer: Momentum is a vector QUANTITY: it has both magnitude and DIRECTION. Since momentum has a direction, it can be used to predict the RESULTING direction and SPEED of MOTION of objects after they collide. Explanation: |
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| 8. |
FREE POINTSQ. What is motion? |
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Answer» Motion is the phenomenon in which an object CHANGES its POSITION over TIME. |
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| 9. |
Calculate the mass of 500ml of water in gram |
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Answer» Answer: 500gram |
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| 10. |
A car starting from rest and accelerate uniform at the rate of 1m/s². Find the distance travelled by the car.a) in 10 secb) in 10th sec |
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| 11. |
If action=reaction and the earth exerts same force as the apple why does apple fall down from a Tree? |
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Answer» because of GRAVITATIONAL FORCE. |
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| 12. |
Two bodies are projected with velocitiesN 2 v at a same instant of time as shownin the figure. For what value of ve, thebodie will collide ? |
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| 13. |
Give an example for dispersion of light |
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Answer» Answer: The PROCESS of splitting of WHITE light into seven colours is called dispersion of light. Example: FORMATION of Rainbow during a CLOUDY day. Step 1: Sunlight passes through the RAINDROPS |
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| 14. |
Fauji having mass of 11000 kg moving with a speed of 20 metre per second is brought to rest after travelling a distance of 50 metres calculate the acceleration as well as the unbalanced force |
Answer» Good MORNING mark me as BRAINLIEST answer |
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| 15. |
The correct temperature of celsius scale is given by20° c20° C20k |
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Answer» Answer: the CORRECT TEMPERATURE of celcius SCALE GIVEN by 20°C |
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| 16. |
What are the types of defects of eyes and define myopia |
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Answer» different types of EYE defects are MYOPIA , hypermetropia, PRESBIOPIA |
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| 17. |
B) Identify the type of inertia in each case and give one more example for the following:i) A ball thrown upwards by a child in a train returns to his hands. (ii) Mudguards are provided in bikes and cars |
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Answer» Answer: inertia of rest .1 inertia of MOTION. 2 Explanation: EG DUST releases when we beat a old unused bag eg SEAT belts |
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| 18. |
Convert 1 degree 57' to radiansplease help me.fast |
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Answer» Answer: Ur answer my dear MATE Explanation: we know that , one TURN of a circle is 360 DEGREE , so , we can use 2 pie = 360 degree Degree - radians (approx) - radian (exact) 57 - 0.994838 rad - 0.32 pie rad hi I hope that it will HELP you |
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| 19. |
an object has moved through a distance can it have zero displacement if yes support your answer with example |
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Answer» Displacement :- The shortest DISTANCE between initial and final position. It is a vector quantity unlike distance which is a scalar quantity. If an object had moved through a distance, It can have zero displacement because It is possible that the object might have ENDED up on the same position where it started. So that the distance between final and initial position would be 0, because the final and Initial position is same. Some Information :- ☛ Distance is the actual PATH length travelled by a body. It is a scalar quantity and can't be less than displacement. ☛ Velocity is the rate of change of displacement per unit time while Speed is the rate of change of distance per unit time. Velocity is vector quantity and Speed is scalar quantity. |
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| 20. |
A ball of 200 g mass is moved with 20 m/s, anddecreases to 10 m/s in 5 seconds due to air friction.So, force of friction due to air is1 |
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Answer» Explanation: AIR resistance can be calculated by taking air DENSITY times the DRAG coefficient times AREA all over two, and then MULTIPLY by velocity squared. |
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| 21. |
Define KvLsolve at least oneexample |
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Answer» ──────────────────────── Kirchhoff's Voltage Law (KVL) states that, for any loop in an electrical circuit, the sum of the electrical voltage ACROSS the loop is zero. ──────────────────────── Let's TAKE as example the following circuit. It has two loops, A and B, and two NODES, C and D. With the ARROWS is DEFINED the positive flow of the electrical current. ──────────────────────── |
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| 22. |
A machine gun fires 20 bullets per second into a target. Each bullet weighs 150 g and has a speed of800 ms -1 The force necessary to hold the gun isa) 800 Nb) 1000 Nc) 1200 Nd) 2400 N |
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Answer» 2400N is the answer. Because |
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| 23. |
What is the work of Bridge rectifier |
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Answer» Answer: Bridge Rectifiers are the circuits which convert alternating current (AC) into direct current (DC) USING the diodes arranged in the bridge circuit configuration. They usually comprise of FOUR or more number of diodes which cause the output generated to be of the same polarity IRRESPECTIVE of the polarity at the input. |
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| 24. |
if cross sectional area of a conductor is decreased then what wipl happen to electric current(while having the potential constant in the circuit) |
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Answer» Current will decrease Explanation: RESISTANCE is given by HENCE as cross SECTION area decreases, resistance will increase, hence current will decrease |
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| 25. |
I poinA ray of light Incident on aplane mirror such that it makesan angle 30 degree with themirror, then the angle ofreflection will beO 60O 30O 90O 40 |
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Answer» Answer: |
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| 26. |
Find the focal length of the leans which forms a virtual image at 50cm of an object placed at 20cm from that leans. Also give the natural of leans |
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Answer» According to sign convention , We know that , the lens formula is given by Thus , 1/f = 1/50 - (-1/20) 1/f = 1/50 + 1/20 1/f = 70/1000 f = 100/7 f = 14.2 cm The POSITIVE value of f shows the NATURE of lens is convex ★ The FOCAL length of convex lens is 14.2 cm |
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| 27. |
Tick the most appropriate answer1. The acceleration of a body is equal toa. (u - v)/tb. (v - u)/tC. (v - u) xtd. (u - V) xt |
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Answer» (u-v)*t hope it HELPS you............ |
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| 28. |
How is sound created |
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Answer» Sound is a type of energy made by vibrations. When any object vibrates, it causes movement in the AIR particles. These particles bump into the particles CLOSE to them, which MAKES them vibrate too, causing them to bump into more air particles. ... If your EAR is within RANGE of the vibrations, you hear the sound. hope it will help you ❣️❣️ |
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| 29. |
Good morning...mates.....pls help me out....A metal cube of side 5cm and density 7.9 g/cm^3 is suspended by the thread and is immersed completely in a liquid of density 1.1 g/cm^3. Find : (a) the weight of cube , (b) the upthrust of cube , (c) the tension in thread.. |
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Answer» Weighr of a CUBE = 9.875N Upthrust of cube = 1.375 N tension in threads = 8.5N plz MAKE it brainlist and follow me GIVE a tnx |
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| 30. |
Draw a ray-diagram showing position ,nature &size of an image formed by concave |
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Answer» PEREZ Bloch PALLID PORTSMOUTH PEAT LOGITECH |
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| 31. |
A force produces an acceleration of 5 cms -2. When it acts on a body of mass 20g. The force isa) 103 Nb) - 103 Nc) 10-3 Nd) 104 N |
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| 32. |
আয়নীয় যৌগের ক্ষেএ আণবিক ওজন |
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| 33. |
Defne KVLandsolve at least oneileFor both.example |
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Answer» KIRCHHOFF's circuit laws are TWO equalities that deal with the CURRENT and POTENTIAL difference in the lumped element model of electrical circuits. They were first described in 1845 by German physicist Gustav Kirchhoff. This generalized the work of Georg Ohm and PRECEDED the work of James Clerk Maxwell. |
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| 34. |
Figure of co-planar vectors |
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Answer» Vectors parallel to the same PLANE, or LIE on the same plane are CALLED coplanar vectors |
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| 35. |
A train moving with a speed of 36km/hr and stops in 10 sec. Find the acceleration of train |
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Answer» Answer: Explanation: FIRST convert 36km/h to m/s 36km/h*5/18=10m/s Acceleration=Change in VELOCITY /Time =0-10m/s/10s =-10m/s/10s= -1m/s² Hope it helps Mark as BRAINLIEST
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| 36. |
3log2 + 2log 3 please gjve the answer |
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Answer» Answer: 5log5 Explanation: |
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| 37. |
All equations in motion in a plane class 11 |
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Answer» Answer: PLEASE MARK me as brainlist please FOLLOW me I will also follow BACK to you please |
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| 38. |
Specific heat capacity at constant volume in termsс.рof gas constant R and y =of ois : |
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| 39. |
A car increase it's velocity from 36km/hr To 72km/hr in 20 sec find the distance travelled by the car during this time |
Answer» To FIND :
Solution :
Converting KM/hr to m/s
36km/hr = 10m/s 72km/hr = = 20m/s As we know that,
⇛a = 20 - 10/20 ⇛a = 10/20 ⇛a = 1/2 m/s² By using Newton's second law of motion
›› s = 10 × 20 + 1/2 × 1/2 × 20² ›› s = 200 + 1/4 × 400 ›› s = 200 + 100 ›› s = 300M Hence,
OR in km :-
›› 300m into km = 300/1000
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| 40. |
A car is moving at 12 km/hr afton covering adistance of 100m its velocity is 54 km/hr . calculatethe acceleration of the car? |
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| 41. |
A pure inductive coil allows a current of 10A to flow froma 230V, 50HZ supply Determinei) Inductance of the coil |
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Answer» Sorry I can't answer this QUESTION because I am WEAK in MATHS |
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| 42. |
DefneKCL and KCLandSolve at least oneexampleboth. |
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Answer» Answer: Explanation: Kirchhoffs First LAW – The Current Law, (KCL) Kirchhoffs Current Law or KCL, states that the “TOTAL current or charge ENTERING a junction or node is exactly equal to the charge leaving the node as it has no other place to go except to leave, as no charge is lost within the node“. In other words the algebraic sum of ALL the currents entering and leaving a node must be equal to zero, I(exiting) + I(entering) = 0. This idea by Kirchhoff is commonly known as the Conservation of Charge. Kirchhoffs Current Law kirchhoffs current law
Here, the three currents entering the node, I1, I2, I3 are all positive in value and the TWO currents leaving the node, I4 and I5 are negative in value. Then this means we can also rewrite the equation as; I1 + I2 + I3 – I4 – I5 = 0 The TERM Node in an electrical circuit generally refers to a connection or junction of two or more current carrying paths or elements such as cables and components. Also for current to flow either in or out of a node a closed circuit path must exist. We can use Kirchhoff’s current law when analysing parallel circuits. |
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| 43. |
If a body moves with uniform velocity what is its acceleration |
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Answer» Answer: As ACCELERATION is the rate of CHANGE of velocity with TIME, if velocity is uniform, there will be no change in it and acceleration will be zero. Explanation: follow me |
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| 44. |
A driver takes 0.20 seconds to apply the brakes (reaction time) |
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Answer» Answer: A driver takes 0.20 s to apply the brakes after he sees a NEED for it. This is CALLED the reaction TIME of the driver. If he ILS driving a car at a speed of 54 km/h and the brakes cause a DECELERATION of 6.0ms2, find the distance travelled by the car after he sees the need to put the brakes on. |
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| 45. |
Renewable sources (wind, solar etc.) being non- conventional, why do you think, are used at relativelylow percentage to generate electricity ? |
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Answer» because of PHYSICAL, CHEMICAL, MECHANICAL PROCESS |
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| 46. |
According to larky, how many objectives phyrical educatino have (a) 1 (d) 2 (c) 4 (d) 5 |
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Answer» 4 is you're answer.................... |
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| 47. |
What is mean by catious |
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Answer» Answer: showing or USING care to avoid trouble or danger. Other Words from cautious. cautiously ADVERB. More from Merriam-Webster on cautious. THESAURUS: All synonyms and antonyms for cautious. Explanation: |
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| 48. |
Two person are pulling rope in opposite direction,one with a force of 100 N and the other with a force of 50 N. What is the resultant force on the table? |
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Answer» I don't understand Explanation: |
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| 49. |
What is differentiation of dv^2/dv |
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Answer» Answer: 2v is the answer Explanation: |
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| 50. |
Word count: 1Two trains 120 m and 80 m in length are running in opposite direction with velocities 42 km/hand 30 km/hr . In what time they will completely cross each other?Answer:LX 날I |
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Answer» Answer: 60 secs Explanation: time to cross COMPLETELY is given by (SUM of distances) /relative VELOCITY Relative velocity is 12Km/hr or 3.33m/sec time hence is |
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