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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. |
To find the specific heat capacity of a solid experimentally what do you need to measure? |
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Answer» the procedure of finding specific heat of solid experimentally?Measure the mass of the calorimeter along with stirrer.Mass of calorimeter ,m1=Now FILL one third of the VOLUME of calorimeter with water. ...take a few LEAD SHOTS and place them in a hot water or steam heater . |
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| 2. |
What is vibrationpls give a long answer |
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Answer» on is a MECHANICAL phenomenon whereby oscillations occur about an equilibrium point. The WORD comes from Latin vibrationem. The oscillations may be periodic, such as the motion of a pendulum—or random, such as the MOVEMENT of a tire on a GRAVEL road. |
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| 3. |
If the sketch of distance-time graph is parallel to time axis what is the speed of the body |
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Answer» If the distance-time GRAPH is parallel to the time axis, the body is at REST. The speed-time graph for a CAR is shown is FIG. |
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| 4. |
What is an electromagnetic impulse |
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Answer» tromagnetic pulse (EMP), also sometimes called a transient electromagnetic disturbance, is a SHORT burst of electromagnetic energy. Such a pulse's origin may be a natural occurrence or man-made and can occur as a radiated, ELECTRIC, or MAGNETIC field or a conducted electric current, depending on the source. |
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| 5. |
under which condition will the magnitude of the resultant of two vectors be equal to that of any one of the constituent vectors |
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Answer» n: under which CONDITION will the magnitude of the resultant of two VECTORS be equal to that of any one of the constituent vectorsAnswer:The resultant of two vectors will be equal to either of them if:(i) The two vectors are of same magnitude.(II) The two vectors are inclined to each other at an ANGLETHE resultant of two vectors will be equal to either of them if:(i) The two vectors are of same magnitude.(ii) The two vectors are inclined to each other at an ANGLEHOPE IT HELPED YOU!!! PLEASE MARK AS BRAINLIEST!!! :) ❤️ |
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| 7. |
Write relative error in ZZ=P^2q^2/√rs^4 |
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Answer» and I are GOING out for the REDMI note 6 PRO or REALME EXPLANATION:Hammer and I will have a few other |
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| 8. |
(b) What is viscosity? Define coefficien of viscosity. FindFind the dimensionaformula of coefficient of viscosity. |
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Answer» ty:Viscosity is a measure of a fluid's resistance to flowCoefficient viscosity:The coefficient of viscosity is a measure of resistance to flow of the fluid. ... DYNAMIC viscosity μ is used in Darcy's law to calculate the rate of fluid flow in POROUS media. The relationship between viscosity and flow rate DEFINES the rheology of the fluid.Formula:Coefficient of viscosity (η)= Fr/AvF = TANGENTIAL force, r = distance between the layers V = velocity. |
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| 9. |
For transverse electric (TE) polarization, which of the following is true? E is parallel to HE is parallel to plane of incidenceE is transverse to plane of incidenceH is transverse to plane of incidence |
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Answer» rallel to the PLANE of incidence. Option (B) is correct.Explanation: When a beam of light falls on a medium it reflects in DIFFERENT directions. Some of it reflects and some are the incident light. There are two TYPES of polarization in electric field "S" polarization and "P" polarization. "S" polarization is perpendicular and it LIES out of the plane while "P" polarization is parallel and it lies parallel to the plane of incidence. |
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| 10. |
State the SI unit of current |
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Answer» AmpereExplanation:The AMPERE, symbol A, is the SI UNIT of ELECTRIC current. |
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| 11. |
51. The weight of a body on the surface of the Earthis 480 kg. What will its weight on Moon? |
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Answer» 80 kg Explanation:WEIGHT on MOON = 1/6 weight on the EARTH= 1/6*480=80 kg |
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| 12. |
8. Area is a scalar quantity. How it can be made a vector? |
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Answer» Scalars are QUANTITIES that are fully described by a MAGNITUDE (or numerical value) alone. Vectors are quantities that are fully described by both a magnitude and a direction. area is NOT a VECTOR. But it can be "represented" by ONE |
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| 14. |
In the Four probe experiment, when the temperature of the Ge crystal is increased from 55 °C to 65 °C the change in resistivity (for l = 3 mA) is **0.2512 ohm cm5.2749 ohm cm05.0204 ohm cmNone of the above |
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| 15. |
A body falling for two seconds covers a distance's' equal to that covered in next second |
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Answer» 2x +4(2x+7)=3(2x+4)2x + 8X + 28=6x + 1210x + 28 = 6x +124X + 28= 124x=-16x=-4 |
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| 16. |
Significant figure of 50480 |
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Answer» 34440029Explanation:SIGNIFICANT FIGURE of 50480. - 34440028 |
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| 17. |
★єℓℓσн тнєяє!★ What is the kinetic energy of an object? |
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Answer» energy, form of energy that an OBJECT or a particle has by reason of its MOTION. If work, which transfers energy, is DONE on an object by applying a NET force, the object SPEEDS up and thereby gains kinetic energy. |
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| 18. |
On what factors does the heating effect of electric current depend? |
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Answer» The heating effects of ELECTRIC CURRENT depend on three factors: The resistance of the conductor. A HIGHER resistance PRODUCES more heat. The time for which the current flows. The longer the time the amount of heat production is high. Higher the current the amount of heat generation is also large.Explanation: |
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| 19. |
What is the magnetic effect of current ? How was it discovered? |
| Answer» TION:The magnetic effect of ELECTRIC current was discovered by Hans Christian Oersted in the year 1982. On 21 APRIL 1820, Oersted published his discovery that a compass needle was deflected from magnetic north by a nearby electric current, confirming a DIRECT relationship between electricity and magnetism. | |
| 20. |
Explain the phenomenon of surfacetension on the basis of molectortheo |
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Answer» The phenomenon of SUFACE tension arises due to the cohesive forces acting between the MOLECULES of a liquid. The LAYER of the liquid SURFACE of thickness equal to the range of moleeular attraction is called surface film.Explanation:PLEASE mark me as brainliest |
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| 21. |
Derive the equation v=u+at ? |
| Answer» TION:CONSIDER a body having INITIAL velocity 'u'. Suppose it is subjected to a uniform acceleration 'a' so that after time 't' its final velocity becomes 'v'. Now, from the definition of acceleration we know that: Acceleration = Time takenChange in velocity or Acceleration = time takenFinal velocity- Initial velocity So, a= tv−u at=v−uand, v=u+at where v= final velocity of the bodyu= initial velocity of the bodya= acceleratioand t= time taken MARK as brilliant | |
| 22. |
Two sound waves have frequencies 400hz and compare 1. loudness 2.pitch |
| Answer» SORYY INCOMPLETE QUESTION | |
| 23. |
If an object moves with constant velocity how is the acceleration has been? |
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Answer» What do the BANKS do with the DEPOSITS which I they ACCEPT from the CUSTOMERS?1 point |
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| 24. |
Write short note:Electroplating |
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Answer» Electroplating is the process of applying a METAL coating on another PIECE of metal (or another conductive SURFACE) through an electro-deposition process. In electroplating, the DEPOSITED metal becomes part of the existing PRODUCT with the plating/coating.Explanation:hope it's help youplease mark it as brainlist |
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| 25. |
Stade law of parallelogram of vector and explain it |
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Answer» ✮requried answer:Parallelogram Law of vectorsIf two VECTORS are acting simultaneously at a point, then it can be represented both in MAGNITUDE and direction by the adjacent sides DRAWN from a point. |
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| 26. |
A gas of hydrogen atoms in their ground state is bombarded by electrons with kinetic energy 10.6 eV. What emitted wavelength would you expect to see? Select one: a. 102 nm b. 122 nm c. 653 nm d. There would be no emitted wavelengths. |
| Answer» HOPE this ANSWERS help you PLEASE MARK me as brainlist | |
| 27. |
An electric bulb of 100 watts is used for 3 days. Calculate the electrical energy consumed per day. |
| Answer» 100 X 3 ISNT it?so 300Explanation: | |
| 29. |
Name the characteristics of sound that help us to distinguish between two different instruments when played ? |
| Answer» PITCH and amplitudeExplanation: this is the ANSWER | |
| 30. |
Give reason ᴡʜy we receive an electric sock if we walk across a caret and touch a metallic object |
| Answer» SORRY I don't UNDERSTAND your QUESTION ⁉️ | |
| 31. |
Please solve it now it is my home work and I got stuck here |
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Answer» A bridge is a structure built to span a physical obstacle, such as a body of water, valley, or ROAD, without closing the way UNDERNEATH. It is CONSTRUCTED for the purpose of providing passage over the obstacle, usually something that is otherwise difficult or IMPOSSIBLE to CROSS. |
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| 32. |
2. Three point charges of 0.67 uC, 0.97 uC and -0.35 C are placed at the corners A, B and Cofa square ABCD. What charge must be placed atthe comer D of the square, so that the net potentialat the centre of the square is zero |
| Answer» MAHIMA mahima mahima mahima mahima mahima mahims | |
| 33. |
A speed time graph is a straight line intersect the y-axis(speed axis).What do you conclude about the motion of a body. |
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Answer» (1) Distance-Time Graph for Uniform Speed (or CONSTANT Speed) ... When the two things are DIRECTLY PROPORTIONAL to each other, then the graph drawn between them is a straight line. Thus, the distance-time graph of an object moving with a uniform speed (or constant speed) is a straight line.Explanation:please make me BRAINLIST |
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| 34. |
An electron enters between two horizontal plates separated by 2mm and having a potentialdifferences of 1000 V. The force on electron isa 8 x 10-12 Nb) 8 x 10-HNc) 8 x 10' Nd) 8 x 10 N |
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| 35. |
A container is filled with water as shown in the given figure. Which of the following statements is correct about the pressure of water? (a) Pressure at A > Pressure at B > Pressure at C (b) Pressure at A = Pressure at B = Pressure at C (c) Pressure at A Pressure at C (d) Pressure at A < Pressure at B < Pressure at C Giving the picture here |
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Answer» D is the TRUE option EXPLANATION:At the depth of water ( height of liquid column ) increases the PRESSURE applied by water on the object also increases. Height of liquid column ( depth) is directly PROPORTIONAL to the pressure. |
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| 36. |
The charge of the nucleus of the is neutral. true or false |
| Answer» FALSE EXPLANATION:We KNOW that atoms consist of PROTONS neutrons and electrons.i) Protons and electron are oppositely charged.ii) Neutrons have no charge.iii) Now, protons and neutrons lie inside the NUCLEUS curve, an electron revolves in orbits around the nucleus.iv) thus the nucleus is always positively charged because of protons as neutrons have no charge.Thus given statement is false. | |
| 37. |
What is Newton's first law? |
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Answer» st law of motion is stated as: An object REMAINS in a state of rest or of uniform motion in a straight line UNLESS COMPELLED to CHANGE that state by an APPLIED force. All objects resist a change in their state of motion.•`•`•`•`•`•`•`•`•`•`•`•`•`•`•`•`•`•`•`•`•`•`•`•`•`•`•`•`•`•`•`• |
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| 38. |
What are the two conditions for work to be done? |
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Answer» Two conditions REQUIRED to do WORK are FORCE applied and DISPLACEMENT produced. |
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| 39. |
the moment of inertia of a thin spherical shell of mass M and radius R about a tangent in its plane is |
| Answer» MOMENT of INERTIA of SPHERICAL SHELL is 2/3MR^2.... | |
| 40. |
Which quantum numbers gives the shell to which the electron belongs? (A) n(B) l(C) m(D) s |
| Answer» N GIVES the SHELL to which the ELECTRON BELONGS | |
| 41. |
the velocity of a small object that has seperated from a rocket moving in a free space with 12km\s is |
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Answer» The velocity of a SMALL object that has separated from a rocket is also 10 km/sec because in a free SPACE the small object that has separated from rocket also travels with the same SPEED as in a free space there is no gravityExplanation: |
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| 42. |
If reach fission of 92U235 releases 200 MeV, how many fissions must occur per second to produce a power of 1 kW :(A) 3.125 × 1013(B) 3.125 × 1014(C) 3.125 × 1015(D) 3.125×1016 |
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| 43. |
Normal always lies between the incident ray and the reflected ray when the ray is incident obliquely on a surface. State true or false : (A) True (B) False (C) Cannot be determined (D) None of these |
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Answer» FalseHope it's HELPS... |
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| 44. |
derive the law of conservation of momentum.prepare any problem based question of your own on conservation of momentum? |
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Answer» The law of momentum conservation can be stated as FOLLOWS. For a collision occurring between OBJECT 1 and object 2 in an ISOLATED system, the total momentum of the two OBJECTS before the collision is equal to the total momentum of the two objects after the collision.Explanation: |
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| 45. |
a particle moving with constant acceleration of 4m\s² due west has an initial velocity 8m\s due east.find the distance covered in the 6th second of its motion |
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Answer» x4EGmdgRQpg80wLOXoINExplanation:h6f6b6j6x4EGmdgRQpg80wLOXoINx4EGmdgRQpg80wLOXoIN |
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| 46. |
Energy level of atom which of them has 275 nm |
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Answer» Given that,λ=275nm=275×10 −9 mEnergy is given byE= λhc = 275×10 −9 ×1.6×10 −19 6.6×10 −34 ×3×10 8 E=0.045×10 2 E=4.5evOut of all these energy levels no energy RANGE will produce 275 NM. At 275 nm energy produced is 4.5 eV |
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| 47. |
A force that causes a balloon that is out of helium to come back down to the ground is ______. |
| Answer» TIONAL FORCE is your ANSWER | |
| 48. |
Do you know how to do these questions??? |
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Answer» first you TAKE both the PART of DIAGRAMS PERIMETER then add this formula = s +h+l |
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| 49. |
(1) A mass m is dropped from a height h at half way to the ground what is the total energy (ii) What happens to the work done by you, as you hita football(3) write the relation between Power energy and time |
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Answer» So It Will Help U ,At maximum height h, POTENTIAL energy is maximum and KINETIC energy is zero. PE = mgh Now, according to CONSERVATION of ...answeranswerA ball of mass m is dropped from a CLIFF of height H . The RATIO of its kinetic energy to the potential energy when it is fallen through a height 3/4H is |
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| 50. |
a wall clock has its minutes hand 7cm long find average speed and average velocity of the tip of the hand between 9am to 9:30 am |
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Answer» 14 and 22 cm.Explanation:Since, the clock is moved from 9:00 to 9:30, the minute ARM has traveled and completed a semi circle to REACH 9:30. So, the the distance covered by the minute arm will be the arc from 9:00 to 9:30. The displacement will be the DIAMETER of the SWEPT area of the minute arm which will be 14 cm, The, distance will be π*r where r is the radius or the length of the minute arm. On solving we will get distance to be 22/7*7 = 22 cm. |
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