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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. |
suppose the speed of light (c) force=f and kinetic energy=k are the fundamental what dimension formula of mass will be?? |
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Answer» C=[LT −1 ] F=[M 1 L 1 T −2 ] K=[M 1 L 2 T −2 ] M=Constant×C α F β K γ ⇒ [M 1 L 0 T 0 ]=[LT −1 ] α [M 1 L 1 T −2 ] β [M 1 L 2 T −2 ] γ or, [M 1 L 0 T 0 ]=[M β+γ L α+β+2γ T −α−2β−2γ ] ⇒ β+γ=1,α+β+2γ=0,α+2β+2γ=0 ⇒β=0,γ=1,α=−2 ⇒[M]=[C −2 K 1 ]Explanation: |
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| 2. |
What does joules law of heating means? |
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Answer» Joule's law of heating states that, when a CURRENT 'i ' PASSES through a conductor of resistance 'R' for time 't' then the HEAT developed in the conductor is equal to the PRODUCT of the square of the current, the resistance and time. |
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| 3. |
Q39. 'Aball moving horizontally with speed 'V' strikes the bob of simple pendulum at rest. The mass of the bob is equal to that of the ball. If the collision is elastic the bob will rise to a height |
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Answer» Two SIMPLE pendulums P and Q have EQUAL lengths but their bobs WEIGH 10GF and 20gf . a. Compare time periods b. Give REASON for your answer.Explanation: |
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| 4. |
The equation of the line parallel to the tangent to the circle x2 + y2 = r2 at the point (x₁, y₁) and passing thro' origin is |
| Answer» TION:R1 FOLLOW and GIVE REMARKS | |
| 5. |
A horizontal force of 15 N accelerates a 4 kg object from rest along a horizontal surface ata rate of 3 m s? At the end of 2 s. theobject's momentum will be(a) 12 kg m s -1 (b) 24 kg m s(c) 30 kg m s1 (d) 45 kg m s |
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Answer» f=ma15=4aa=15/4u=0, V=u+at v= 15/4×2v=7.5p=mvp = 4×7.5p = 30 KG m s-1 |
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| 6. |
38. Assume that you have two balls of identical volume, one weighing 2 newtons and the other 10newtons. Both are falling freely after being released from the same point simultaneously. Whichof the following will then be true?1. The 10-N ball falling freely from rest will be accelerated at a greater rare than the 2-N ball.At the end of 4 s of free fall, the 10-N ball will have 5 times the momentum of the 2-N ball.At the end of 4s of free fall, the 10-N ball will have the same kinetic energy as the 2-N ball.The 10-N ball possesses greater inertia than the 2-N ball.Аا ن و ن صI, ll and Ill onlyI and ill onlyIf and IV onlyIV only• None of the above |
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Answer» the 3 rd ONE is correct as Explanation:hope u like it and mark me BRAINLIEST*here v is 40 |
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| 7. |
If the earth stopped rotating, the weight of the object at the equator would(a) be greater(b) be same as before(c) be less(d) vary with altitude |
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Answer» d VARY with altitude this will be your ANSWERPLEASE make me brainlist and FOLLOW me please |
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| 8. |
18. Initially the system is at rest. From the instance shown, 2m*2m' is projected towards pulley with speed u. Find thespeed of 'm' just after the string becomes taut.(A) 2u/3(B) 4u/3(C) u(D) 5u/3 |
| Answer» SPEED uExplanation:Mass 2m MOVES forward without Acceleration at VELOCTY u Till string is not Taut . It also means String gets Taut when falling Mass m gets a VELOCITY u . Soon after string become Taut Mass has velocity u. | |
| 9. |
Distinguish between speed and velocity |
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Answer» Speed, being a scalar quantity, is the rate at which an object COVERS DISTANCE. The AVERAGE speed is the distance (a scalar quantity) per time ratio. ... On the other HAND, VELOCITY is a vector quantity; it is direction-aware. Velocity is the rate at which the position changes |
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| 10. |
Plz...solve it..plz don't write unnecessary things..to get points |
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Answer» this is the ANSWER ....... |
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| 11. |
a particle starts from rest and accelerates as shown in figure P2.20. The distance traveled in the first 20.0 s. |
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Answer» A. Find the speed at t=10 sa=vf−v1tf−tiSubstitute the given values$$2\ m/s^2 = \frac{v_f - 0}{10\ s...SEE FULL answer below. |
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| 12. |
Which part of human eye controls the amount of light entering into the eyes? a) Irisb) Pupil c) both a) and b) |
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Answer» a) IrisExplanation:Iris is responsible for controlling the DIAMETER and SIZE of the PUPIL and thus the amount of LIGHT reaching the retina. Eye color is also defined by that of the iris. |
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| 13. |
given that k=kinetic v=velocity T= time of they are chosen as the fundamental what is the dimension for moul |
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| 14. |
২০ ও - ১০ আধানের মধ্যবর্তী দূড়্ত্ব ১০ মি। আধানদ্বয়ের মধ্যবিন্দুতে তড়িৎ প্রাবল্য কত? |
| Answer» TYPE in HINDI LANGUAGE EXPLANATION:mark me as brainlist please | |
| 15. |
The refractive index of blue light in a certain glass-slab is 1.689. If the blue light is replaced by red light, will the refractive index be more or less or the same? Draw a labeled diagram to trace the path of a refracted ray through a glass slab. |
| Answer» JESUS CHRIST is THEANSWER of this QUESTIONS | |
| 16. |
4. When two forces act on a body,in opposite directions along straight line. One of the forces should be. _the other to change the state of motion of a body. |
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Answer» ☞It is CALLED unbalanced force... Unbalanced force: When two opposite forces acting on a BODY move a body in the direction of the greater force or change the STATE of rest, such forces are called as unbalanced force. Frictional force: The force that always opposes the MOTION of object is called force of FRICTION....Explanation:Hope it may helps u... |
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| 17. |
i know ans but I want method to solve this problem.... please help me guys it's very urgent and very important |
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Answer» ysicsMoving charge and MagnetismQuestion :A charge with 10‾¹¹ CB and 10‾⁷ kg mass moving with a velocity of 10⁸ m/s along x-axis. A uniform static magnetic FIELD of 0.5T is acting along y-axis. The magnetic force (magnitude and direction) on chargeAnswer :★ Force on a charge q moving with velocity v in a magnetic field B is GIVEN byF = q (v × B)ATQ, v = 10⁸ i m/sB = 0.5 j T⭆ F = q (v × B)⭆ F = 10‾¹¹ (10⁸ i × 0.5 j) We know that, i × j = k⭆ F = 5 × 10‾⁴ N along z-axis∴ (B) is the correct answerCheers! |
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| 18. |
Conscoe Readthe information from the table andthe questions given belowName of the gas hydrogen (H) Oxygen (6) Methone toMoleculegas 9164whichgas has leasthas least late oflate of diffussion? |
| Answer» OK WAIT few MINUTE PLZ........ | |
| 19. |
A car starts from rest and again comes to rest after trav- elling a distance of 12 km in 1/8 hour. Its maximum velocity in between is 120km/h. In its journey, accelera-tion and retardation are both uniform, and the value ofacceleration is half that of retardation. How long doesthe car travel with uniform velocity?ans is [4.5 min).please solve in correct way don't give wrong answer. |
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Answer» Okay, let's write the given data.Acceleration (α) = ½ Retardation (β) [α=½β OR 2α=β] ----- (1)Distance (s) = 12 Km ⇒ 12000 m [Convert Km into m] Maximum velocity (v₁) = 120 Km⁻¹ ⇒ (100/3)ms⁻¹ Time (t₁) = 1/8th of an hour ⇒ 7.5 minutes.Time of car TRAVEL (t₂)initial velocity (u) = 0Final velocity (v) = 0THEN, use this FORMULA:v₁ =αt₁ =(β+α )÷(αβt₂ )HOPE THIS HELPS :D |
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| 20. |
31. The masses M1, M2 and M3 of the three bodies shown in figure are 5, 2 and 3 kg respectively. Calculate the value of T1, T2 andT3. When (1) Whole system is going upward with an accelerationof 2ms ? & (ii) Whole system is stationary. Given g=9.8 ms-2 |
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Answer» 120NExplanation:GIVEN,a=2ms −2 g=9.8ms −2 For T 1 T 1 −5g−T 2 =5×2=10T 1 −5g−T 2 =10 For T 2 T 2 −T 3 −2g=2×2=4T 2 −T 3 −2g=4 For T 3 T 3 −3g=3×2=6T 3 −2=6gT 3 =36N SOLVING the EQUTIONS,T 2 −36−20=4T 2 =60NT 1 =10+50+60=120N |
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| 21. |
Iv) A large ball 2 m in radius is made up ofa rope of square cross section with edgelength 4 mm. Neglecting the air gaps inthe ball, what is the total length of therope to the nearest order of magnitude?[Ans : -10ºm = 10km] |
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Answer» tion:HOPE it helps PLEASE mark as BRAINLIAST |
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| 22. |
9. Specific heat of Cu is 0.095, iron 0.115, bronze 0.092, water 1.0. Which of theabove can be quick heated if kept in sun-light with sarne masses ?[ ]1) water 2) iron 3) bronze 4) copper |
| Answer» 4) COPPER is your CORRECT answer.Explanation:I HOPE this HELPS you. | |
| 23. |
2 The value of magnetic field strength for permanent magnets is(a) 'unity(b) infinity(c) zero(d) two |
| Answer» TION:INFINITY I GUESS MUST be the ANSWER | |
| 24. |
3 16. A thin glass plate of refractive index 1.5 is placed in air. White light is incident normally on the plate,600 nm and 500 nm are the two wavelengths that are missing in the reflected light. The minimumthickness of the film is(A) 500 nm(B) 1000 nm(C) 750 nm(D) 250 nm |
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Answer» 1. it should be refracted2.it would be not missing as the glass is not coloured 3. how can glass absorb light Explanation:HOPE u LIKE it and MAKE me BRAINLIEST |
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| 25. |
Write a program in basic for the solution of partial differential equation using lattice method |
| Answer» PLEASE thank me and MARK me as brainliest because i need your support | |
| 26. |
Our muscle cells perform -- -- -- type of respiration during exercise. |
| Answer» TION:ANAEROBIC TYPE of RESPIRATION | |
| 27. |
Give one expample of variable acceleration |
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Answer» example of variable ACCELERATION are velocity increases in unequal AMOUNT with EQUAL INTERVAL. For example, a car is moving in a crowded street, when car find space it will move with greater speed and if it STUCK in crowd then it will move with less speed. |
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| 28. |
The volume of a cube of side 10 cm is ______ m^3 |
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| 29. |
Arrange the following media A, B and C, having refractive indices 1 , 2 and 3 respectively ( 1 < 2 < 3 ), on the basis of: |
| Answer» QUESTION CLEAR PLZ | |
| 30. |
An electron is moving at 10*6 m/sec in a direction parallel to a current of 5 A flowing through an infinite long straight wire separated by a perpendicular distance of 10 cm in air. Magnetic force experienced by the electron a) 1.6 x 10*19 N 1b) 1.6 x 10*20 Nc)1.6 x 10*18 Nd) 1.6 x 10*21......plzz help me guys it's very urgent and very important |
| Answer» C is the ANSWER OK I THINK c only | |
| 31. |
It is possible to attain a temperature equal to absolute zero ? explain |
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Answer» Very low temperaturesAbsolute zero cannot be achieved, although it is POSSIBLE to reach TEMPERATURES close to it through the USE of cryocoolers, dilution refrigerators, and NUCLEAR adiabatic demagnetization. The use of laser cooling has produced temperatures less than a billionth of a KELVIN. |
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| 32. |
LAR n37. In the given figure, a + b + c iss.o610Ato46( 2a(2) 26(372€(4) ä+6 |
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| 33. |
With the decrease in amplitude of a vibrating particle, its pitch becomes bass. True/False?? |
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Answer» Hi thereYes, it is TRUE that with the DECREASE in amplitude of a VIBRATING particle, its pitch is low as Amplitude and Pitch are directly related.Hope it helps u...If it's correct, plz mark me as Brainliest.Thx : )Goodnight. |
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| 34. |
explain the need of second low of thermodynamics. State its both statement and show their equivalence |
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Answer» tion:The second law of thermodynamics states that the TOTAL entropy of an isolated system can NEVER decrease over time, and is constant if and only if all processes are reversible.[1] Isolated systems spontaneously evolve towards thermodynamic equilibrium, the state with maximum entropy.The total entropy of a system and its surroundings can remain constant in ideal cases where the system is in thermodynamic equilibrium, or is undergoing a (fictive) reversible process. In all processes that occur, including spontaneous processes,[2] the total entropy of the system and its surroundings INCREASES and the process is irreversible in the thermodynamic SENSE. The increase in entropy accounts for the irreversibility of natural processes, and the asymmetry between future and past.[3]Historically, the second law was an empirical finding that was accepted as an axiom of thermodynamic theory. Statistical mechanics, classical or quantum, explains the microscopic origin of the law.The second law has been expressed in MANY ways. Its first formulation is credited to the French scientist Sadi Carnot, who in 1824 showed that there is an upper limit to the efficiency of conversion of heat to work in a heat engine. This aspect of the second law is often named after Carnot.[4] |
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| 35. |
The value of the force of gravity on a boy of mass 40kg was found to be 2400N. Using ME=6×1024kg and Re=6.4×106m, find the value of G? |
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Answer» - The VALUE of G is • GIVEN:-FORCE of gravity on boy = 2400 NMass of the boy = 40 KG = 6 × 10²⁴ kg = 6.4 × 10^6 m• To Find:-Value of G • Solution:-We know,→ → → → → → Therefore, the value of G is Note:-Universal accepted value of G is |
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| 36. |
What is gravitational force |
| Answer» GRAVITY, or GRAVITATION, is a natural phenomenon by which all things with mass or energy—including planets, STARS, galaxies, and even light—are brought TOWARD one another. On Earth, gravity gives weight to physical objects, and the Moon's gravity causes the ocean tides. | |
| 37. |
Property of fludity of all liquidsA) sameB) Different c)flows at eqrealspeed D) none. |
| Answer» B) differentitz UR ANS. | |
| 38. |
A vector, B, when added to the vector C = 3i + 4j yields a resultant vector, R, which is in the positive y-direction and has a magnitude equal to that of C. What is the magnitude of B? |
| Answer» TION:first follow me and mark this answer as brainliest answer then I will EDIT and give the CORRECT answer of this question | |
| 39. |
An electric car has a battery of voltage, V_{\text{cell}}=350\ \text VV cell =350 VV, start subscript, start text, c, e, l, l, end text, end subscript, equals, 350, space, start text, V, end text, inside it. When the car runs, the battery passes over 2.42.42, point, 4 billion billion electrons through itself each minute. These electrons have a net magnitude of charge, q=4.0\ \text Cq=4.0 Cq, equals, 4, point, 0, space, start text, C, end text. What is the work done by the battery, WWW, to move the electrons? |
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Answer» tion:3 is a very GOOD IDEA to GET a BIT of a bit of a bit of a bit of a bit of a bit of a bit of |
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| 40. |
Qstate the effect of force in each of thefollowing@ it Spring is stretchedcase |
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Answer» please MARK me down as brainlistExplanation:If too much force is applied, one may stretch or compress a spring BEYOND a certain point that its deformation will OCCUR. On subsequent release of the stress, the spring will return to a PERMANENTLY deformed shape which will be different from its original shape |
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| 41. |
Which diffuse fast petrol or water |
| Answer» PETROL............. | |
| 42. |
A vehicle travels from A to B at a constant speed of 60 km/hr and returns from B to A at 40 km/hr.Find average velocity and average speed. |
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Answer» average speed EQUALS 100/(2 ×distance of AB)average velocity equals 0 [as DISPLACEMENT is 0] |
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| 43. |
A current of 10 A flows in a conductor of 10 ohm resistance for 1 mint the heat produce will be |
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Answer» 60000Explanation:H=i^2RtH=10^2*10*60H=60000Mark me as BRAINLIEST if you WISH HOPE it HELPS |
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| 44. |
A circular track has a circumference 314cm with AB as one of its diameter. A scooterist moves from A to B along the circular path with a uniform speed of 10m/s. Find 3 (i) Distance covered by the scooterist (ii) Displacement of the scooterist and (iii) Time taken by the scooterist in reaching from A to B |
| Answer» 157 cm99.99 cm0.157 SECONDS | |
| 45. |
3. Discuss any four mathematical functions of MS Excel. एमएस एक्सेल के किसी भी चार गणितीय फंक्शन पर चर्चा करें।71 hindi |
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Answer» tion:Here is a list of most frequently USED mathematical FORMULAS in excel.SUM(): This function is used to adds all the values within a cell range.SYNTAX: sum(cell address : cell address)Example: sum(C1:C3)=15. ...Example: sum(4,5,6)=15.SUMIF(): ...Syntax: SUMIF( range,criteria) ...AVERAGE(): ...COUNT()I HOPE THIS HELPS PLEASE MARK ME A BRAINLIST!!!!!!!! |
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| 46. |
What is the definitons of base quantity? |
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Answer» A base QUANTITY is a physical quantity in a subset of a given system of quantities that is chosen by convention, where no quantity in the SET can be expressed in terms of the others. The ISQ DEFINES seven base quantities. ... The dimension of a physical quantity does not include MAGNITUDE or units. |
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| 47. |
Slope of distance -time graph give the value ? |
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Answer» In our last CLASS, you made a series of measurements of image and object distances using a converging lens.You should have found that as you decreased the object DISTANCE (i.e., MOVED the object CLOSER to the lens) the |
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| 48. |
9 9. Which of the following has lowest fludityA) coconut oilB) ash c)perfumeD) sugar |
| Answer» LOWEST FLUIDITY. | |
| 49. |
What do we mean by pressure |
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Answer» Pressure (symbol: p or P) is the FORCE applied perpendicular to the surface of an OBJECT per unit area over which that force is distributed. ... Pressure may also be expressed in terms of standard atmospheric pressure; the atmosphere (atm) is EQUAL to this pressure, and the torr is defined as 1⁄760 of this.plzz LIKE my 20 ANSWER I promise I will also ❤️❤️be happy |
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| 50. |
If a car accelerates from 3 m/s to 12 m/s in 3 seconds, what is the car's average acceleration? |
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Answer» It will be 3m/s squareExplanation:LET, a be ACCELERATION v=final velocityu=initial velocityt=time in secondsa=v-u/t=›a=12-3/3=›a=9/3=›a=3 m/s SQUARE |
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