Explore topic-wise InterviewSolutions in Current Affairs.

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.

What is the magnitude of emf induced in the coil when its plane become parallel to the magnetic field

Answer»

s....SUP.................. long TIME no see ```LOVE BRAINLY```

2.

Name the position of the surface pf the earth where the value of g is maximum and minimum

Answer»

is at POLES and MINIMUM is at EQUATOR

3.

State and explain dual nature of radiation

Answer»

ticles of the RADIATION or WAVES exhibits both WAVE and particle like PROPERTIES

4.

Random and periodic motion definition and examples

Answer»

c motion, in physics, motion repeated in equal intervals of time. Periodic motion is performed, for example, by a rocking chair, a bouncing ball, a vibrating tuning FORK, a SWING in motion, the Earth in its orbit around the Sun, and a waterwave. In each case the interval of time for a repetition, or cycle, of the motion is called a period, while the number of periods per unit time is called the frequency. THUS, the period of the Earth’s orbit is one year, and its frequency is one orbit per year. A tuning fork might have a frequency of 1,000 cycles per second and a period of 1 millisecond (1 thousandth of a second).Examples of periodic motion include a rocking chair, swing, tuning fork, and a pendulum. A satellite orbiting our planet and a mass bouncing on a SPRING are also examples of periodic motionRandom motion ...--Unpredictable kind of motion where an object moves in any DIRECTION and the direction keeps changing continuously.Examples: kite flying in the air, fish swimming underwater, helium balloon in the sky

5.

Name the substance whose surface tension decreases with increase in temperature

Answer» MERCURY, ACETONE, BENZENE,ETHANOL
6.

HI GUYS ... CAN SOMEBODY PLEASE GIVE ME ALL FORMULAS FOR SOUND ..(ONLY RELEVANT TO CLASS 8) 40 POINTS FOR GRAB. #NOSPAM

Answer»

s of sound :(i) Echo Speed of echo = ( 2 × distance between surface and source ) / time(ii) V = f λwhere V = VELOCITY of WAVE ,f = frequency of sound wave ,λ = wavelength .(iii) f = 1 / twhere f = frequency of wave ,t = time PERIOD .(iv) E = h nuwhere h = Plank's constantE = ENERGY of wave .(v) f = √T/ 2 l ( π r² d )f = frequency of STRETCHED stringl = lengthd = densityr = radiusT= time period .Note that this formula is for stretched string only.Hope it helps !

7.

There was poster making competition in school on topic"SAVE ENERGY".The students were also asked to give write on tbe topic. A student of school is unable to make the write uo on this topic. 1)Suggest any two ways to save ebergy. 2)Mention the value which the school is trying to imbibe in his student by holding such a comlpetition. For class 10

Answer» FRIENDLY .use Public transport values .care TOWARDS the NATURE
8.

If a material weighs 1 kg in air and 800 gm in water find volume of water displaced

Answer»

weighs 450 GF in a air and 310 gf when COMPLETELY immersed in WATER FIND (i)the volume of a body(ii) the loss in weight of the body and(iii) the upthrust of the body. ... Let, d be the DENSITY of the body, V be its volume. Let q be the density of water.PLEASE MARK ME AS BTAINLIEST

9.

Why this condition R=V/I implies that at a constant temperature, the resistance of an Ohmic conductor is independent of the current I and the potential difference V.

Answer»

ductors have atoms. these ITEMS with INCREASE in temperature REACT DIFFERENTLY. with a temperature DIFFERENCE,

10.

Pro edure for determation of the amount of gravity

Answer»

nitDefinitionθradiansDeflection of torsionbalance BEAM from its rest positionFNGravitational force between MASSES M and mGm3 kg−1 s−2Gravitational constantmkgMass of small LEAD BALL

11.

Out of the material A has relative permeability slightly greater than unity, while B has less than unity. identify the nature of the material A and B

Answer»

agneticB-diamagnetic

12.

Physics 0th magnetism and it is electric effect note

Answer» PDF NOTES. . not ABLE to SEND here
13.

Define semiconductors

Answer»

ductors are three terminal CONDUCTING DEVICES WHOSE conductivity lies in between those of CONDUCTORS and insulators

14.

A beam is supported at its ends by supports which are 12 m apart

Answer»

is supported at its ends by supports which are 12M APART. Since the load is at the CENTRE,there is a deflection of 3CM at the centre and the deflection BEAM is in the shape of a para bola.

15.

Lare amount of fossil fuel is burn every day in which plant

Answer»

mal POWER PLANTS they USE coal to PRODUCE ELECTRICITY

16.

How will gravitational force change if both the mass and distance between them are doubled?

Answer»

neysingh I don't KNOW what you THINK about

17.

What type of motion is exhibited by a freely falling body give reason for answer

Answer»

y EXHIBITS GRAVITATIONAL FORCE

18.

When 4 volts e.M.F. Is applied across a 1 farad capacitor, it will store energy of

Answer»

When 4 VOLT e.m.f is APPLIED across a 1 FARAD capacitor, it will store energy of 8 Joules

19.

Please give me the answer of the question I am a mark in the brain list answer

Answer»

ld be careful because it create CHANCE to lag electric current.The ANOTHER THING that after lag( to touch) the current it MIGHT be possible to GET death.

20.

Where is an image formed in a convex mirror of focal length 10cm when an object is placed at a distance of 20cm from its reflecting surface

Answer»

re of curvatureDist =20 CM ( of IMAGE)

21.

The pressure difference between two points along a horizontal pipe through which water is flowing is 1.4 cm of mercury.

Answer»

se at EVERY PT in HORIZONTAL LINE pressure is same

22.

Draw the diagram of a compound microscope when the final image is formed at near point

Answer» PLEASE please MARK me as brain list if my ANSWER helps you
23.

a ball of 2 kg is thrown at an angle 45° with ground with initial speed 10m/s work done by the force of gravity when it is at highest point

Answer» IIIIS is your ANSWER
24.

If a ray is incident normally on the interface of two medium. What is the angle of refraction?

Answer»

f REFRACTION is 0. because the RAY PASSES through the slab without any deviation

25.

Can a body rotate about its center of gravity under the action of its weight? explain it?

Answer»

nition the CENTRE of Gravityis the point about which the weight of a body is BALANCED in all three dimensions. The body can maintain a constant rotation about its centre ofgravity, but any angular accelerationwill require a NET moment (FORCE orweight times DISTANCE) about the axis of rotation.

26.

Answer of this numerical as soon as possible....

Answer» XAMPLE nasolution is GIVEN
27.

At time t 0 a scooter has a velocity of 21m/s it slows down with an accelaration 50 mt/sec at the end after 4 sec

Answer»

t am i SUPPOSED to do with this? I MEAN what is your REQUIRMENT?

28.

What would be the reading of ammeter and voltmeter when key is closed. Give reasons to justify your answer?

Answer»

.indhaygude764Secondary SchoolCbse board x 5+3 ptsGood After NoonHere is my questionWhat would be the reading of the ammeter and voltmeter when key is closed? Give reason to justify your answer.Comments (2) REPORT by DANCEDREAMER 22.07.2018sukhman32Comment has been deletedComment has been deletedAnswersTHE BRAINLIEST ANSWER!kmodi2222Kmodi2222 AceHeya..!!!!Good Afternoon_ Here Is Your Answer _ In which the value of CURRENT , I in ammeter is 0.24 Ampere .And the reading of potential difference ,V in voltmeter is 2.88 V .In this CIRCUIT the current is constant and is not divide . Because in which resistors are connected in series form . And in series form current is always constant . The voltmeter is connected to resistors no. 3 , R3 only . So , we can MEASURE the potential difference of R3 only .

29.

How anti radiation locket observes the electromagnetic waves

Answer»

diation LOCKET is MADE of some mirror or fiber that are fitted with COPPER that SHOW electromagnetic waves

30.

Why do we need Heisenberg uncertainty principle

Answer»

,here's ur ans...The Heisenberg Uncertainty Principle (HUP) is not just a side result of quantum mechanics. In fact, it is arguably the most important fundamental CONCEPT behind all of quantum mechanics. Put another way, the speed of light being constant in every reference frame is to special relativity just as the HUP is to quantum mechanics. Because of this, the HUP has played a SIGNIFICANT role in any scientific theory or technology that follows from quantum mechanics. For example, classical electrodynamics very EFFECTIVELY models light as a wave that can oscillate in different ways. A wave that is oscillating up and down is said to be "vertically POLARIZED." Take two light sources that emit vertically polarized light in sync (that is, the "up" and "down" movements of the light are matched). Now rotate one of these sources 45 degrees clockwise and the other one 45 degrees counter-clockwise and position them so that the two resulting "in phase" DIAGONAL waves form an "X" as they travel away from you. It turns out these two waves will INTERACT with each other to produce vertically polarized light yet again. In other words, the "left to right" and "right to left" motion of the two waves will cancel each other out and the remaining motion will be purely "up and down." Because of this, ALL VERTICALLY POLARIZED LIGHT spreads 50% of its power along clockwise polarizations and 50% of its power along counter-clockwise polarizations.Have a gud day...

31.

Write the conditions for ideal fluid

Answer»

l fluid is a CONCEPTUAL fluidhaving zero viscosity i.e It can move WITHOUT energy loss due to friction and incompressibilty i.e. density is constant throughout flow. REALISTICALLY speaking no fluid is IDEAL fluid but the concept is very important PART of fluidmechanics.

32.

a man weighing 50 kilograms climbs up vertically up to a height of 10m in 25 second calculate the power of Manj g=9.8 mper square

Answer»

fghgfgfrigfhgfjhggidfggygtg3y6eg3ue6u6

33.

Standing waves are produced by the superposition of two waves with y1=0.05 sin find the amplitude of particle 0.5m

Answer»

litude of particle at 0.5m is 5.4 × 10⁻²m.Explanation:Q: Standing waves are produced by the superposition of two waves Y1 = 0.05 sin(3πt – 2x) and y2 = 0.05 sin(3πt + 2x) where X and y are in meters and t is in seconds. The amplitude of a particle at x = 0.5 m is………=> Resultant displacement of waves = y1 + y2 = 0.05  sin ( 3πt – 2x ) +  0.05 sin ( 3πt + 2x ) = 0.05 [ sin ( 3πt – 2x ) + sin ( 3πt + 2x ) ] y = 0.05 * 2 sin (3πt) cos {(– 4x)/2}  ....1) As sin R + sin S = 2sin [(R + S)/2} cos{(R – S)/2)] from equation (1) we can say, y = 0.1 cos2x ∙ sin3πt => Now, The amplitude of a particle at x = 0.5 m:y = A sin3πt where,Amplitude, A = 0.1 cos2x = 0.1 cos(2 × 0.5) = 0.1 cos (1 rad) => But one RADIAN is EQUALS to 180/π degrees.∴ A = 0.1 cos {(1 × 180) / π}° = 0.1 cos ( 180/3.14 )°= 0.1 cos (57.4)°  But, cos 57.4° is equals to 0.5387.  ∴ A = 0.1 * 0.54= 0.054 m= 5.4 × 10⁻² mThus,  the amplitude of particle at 0.5m is 5.4 × 10⁻² metre.Learn more:Q:1 Two simple harmonic motions are represented by the equation y1 = 0.1 sin (100πt + π/3) and y2 = 0.1 cosπt. The phase difference of the velocity of particle 1 w.r.t. the velocity of the particle 2 isClick here: brainly.in/question/2786260Q:2 A particle is executing shm with an amplitude of 4cm.at the mean position the velocity of the particle is 10 cm/sec.the distance of the particle from the mean position when its speed becomes 5cm/s isClick here: brainly.in/question/3445823

34.

List one social and one environmental problem due to which environmentalists protested against raising the height of the"sardar sarovar dam" on the river narmada.

Answer» ER is PLASTIC
35.

What is the angle between force and displacement for maximum work

Answer»

work is EQUAL FSCOSTHETA if we want maximum work DONE then COSTHETA has to be maximum which is 1so costheta=1costheta=cos (0)so THETA =0degree

36.

Increasing temperature drecreases the visosity. Why

Answer»

The increase in temperature CAUSES the kinetic or THERMAL energy to increase and the MOLECULES BECOME more mobile. The ATTRACTIVE binding energy is reduced and therefore the viscosity is reduced.

37.

In a galvanic cell which electrode is negatively charged

Answer»

is NEGATIVELY CHARGE

38.

A machine can do a work of 200 joule in 25 second then find out its power

Answer»

now your DOUBT will GET CLEAR

39.

a force of 20 Newton being applied on a body if the angle between the line of action and the displacement is 45 degree and the amount of displacement is 4m then find out the work done

Answer»

fscos45°

40.

An air bubble of radius 10^-2 m is rising up at a steady rate2×103

Answer»

bubble of 1cm radius is rising at a steady rate of 2 through a liquid of DENSITY 1.5 3 NEGLECT density of air, if g is 1000 2 , then the coefficient of viscosity of the liquid is ? Force of viscosity equals (Stokes' law): = 6 where – speed of the bubble, - coefficient of viscosity Buoyant force that is exerted on bubble equals: = = 4 3 3 NEWTON’s first law of MOTION: = 6 = 4 3 3 = 4 3 3 6 = 2 2 9 ≅ 167

41.

State different ways to induce current in a coil...

Answer»

current directly from battery etc..2, by using electro MAGNETIC induction. i know this much only and dont CRAZY with me OK

42.

If you keep an iron piece in solid state copper sulphate crystals does it get any reaction

Answer»

re will not be any reaction.In SOLID state, Cu(2+) ions and SO4(2-) ions are attached to each other. They are not FREE.So there will be no reaction.However, in aqueous solution, the ions are free. Since Fe is more reactive, Fe can REPLACE the Cu(2+) ions. Fe will CONVERT to Fe(2+) ions and Cu(2+) ions will become Cu and precipitate.

43.

What is mean free path?

Answer»

ics, the mean free path is the average distance travelled by a moving particle (such as an atom, a molecule, a PHOTON) between SUCCESSIVE IMPACTS (COLLISIONS),[1] which modify its direction or energy or other particle properties

44.

Write name of two different quantities which have same dimensions also write their dimensions

Answer» QUANTITIES which have same dimensions areSpeed and VELOCITY LT^(-1)Work n energy ML^2T^(-2)Hope this HELPS mate
45.

The mass of a body is 100 kg calculate the amount of work done by the body in climbing 20 m high building is (g= 9.8 metre per square

Answer»

mass = 100 kgheight = 20 MG = 9.8 m/s²Formula WORK done = m g hCalculate the work Work = m g H          = 100 kg × 9.8 m/s² × 20 m          = 980 kg m/s² × 20 m          = 19600 kg m²/s²          = 19600 JANSWER :19600 J is the work done .

46.

Findout the presence of charge on a body

Answer»

sence of charge on a body can be shown by USING an electroscope. Also ONE of the main factors is repulsion. This is because when 2 objects are charged, they repel or sometimes even ATTRACT.

47.

If speed is 14 km/hr and it takes 2minute find the distance

Answer»

, DISTANCE= speed/timeso, d= 14/0.03  (2 MINUTE = 0.03 HRS)THEREFORE, distance= 466.67 km/hr

48.

The answer is b. can anyone explain why?

Answer»

is a VECTOR, it can change in two ways: its magnitude can change and its direction can change. Either change gives rise to an acceleration. For circular motion at constant speed, the velocity is always tangential to the circular path, and therefore its direction is continuously changing even though its magnitude is constant. Therefore, the object has an acceleration. It can be SHOWN that the magnitude of the acceleration ac for uniform circular motion with speed v in a path of radius Ris ac = v2R, and that the direction of the acceleration is inward toward the CENTER of the circular path. This is illustrated in Figure 1.n the object equal in magnitude to mac and in the direction of ac.Circular motion with speed v in a path of radius R has period (time for one REVOLUTION) T and frequency (revolutions/s) f = 1/T. Since the object travels a distance 2πR (the circumference of its circular path) in time T the speed v is equal to v = 2πRT = 2πRf and ac = 4π2f 2R.The setup for the experiment is shown in Figure 2. When the plastic tube is moved in a small circle above your head, the racketball moves around in a horizontal circle at the end of a string that PASSES through the tube and has a mass hanger with slotted masses suspended from its lower end.Applying ΣF = ma to the stationary mass hanger gives Fstring = Mg,where Fstring is the tension in the string and M is the sum of the masses of the mass hanger and the slotted masses that are placed on it.

49.

Who discover law of conservation of mass and law of mass??

Answer» LAURENT LavoisierWho DISCOVER LAW of CONSERVATION of MASS and law of mass??
50.

Please answer this question no 14 and 15

Answer»

your ANSWER for QUESTION 14