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.

An object behave like a convex lens in the air but like a concave lens in water. what is the type of refractive index of it's material with respect to air and water?​

Answer»
2.

Hey Guys Help Please♥️ Charges q1 = 100 u C and q2= 50 u C are located in xy-plane at positions r1 = 3.0 j andr2 = 4.0 i respectively. Where the distance is measured in meters. Calculate the forceon q2(a) 1.8 N(b) 2.5 N(C) ZN(d) 8N​

Answer»

9NExplanation:DISTANCE between the charges Q1 and q2 __________ = √(0-4)²+(3-0)² = √25 r = 5 metersgiven q1 = 100uC =1× 10^(-4) C q2 = 50uC = 5×10^(-5) C=> Force(F) = (1/4π€0) q1q2/r² = 9×10^9×10^(-4)×5×10(-5)/5 = 9 N=> all options are false.=> The force between the charges is 9N HOPE this HELPS you

3.

what are the importance of gravitation.Please give me minimum 10 points in the answer. I will like and follow you.Help me!!​

Answer»

The Importance of Universal law of gravitation lies in the fact, that it was successful in explaining many PHENOMENA such as. (i) how DIFFERENT objects in this universe, affect others, (ii) how gravity is responsible for the weight of a body and keeps US on the ground, (iii) how the lunar motion AROUND the EARTH occurs (v) how the planetary motion takes place (vi) how the tidal waves originate

4.

an electric dipole of moment vector p placed in a uniform electric field E has maximum potential energy when the angle between P and E is​

Answer» 180..................
5.

Can anyone answer these two questions ?

Answer» TION:As such, when our Sun runs out of hydrogen fuel, it will EXPAND to become a red GIANT, puff off its outer layers, and then settle down as a compact white dwarf star, then slowly cooling down for trillions of years. If, however, the Sun had about 10 times its current mass, the final PHASE of its lifespan would be significantly more (ahem) explosive.When this super-massive Sun RAN out of hydrogen fuel in its core, it would switch over to converting atoms of helium, and then atoms of carbon (just like our own). This process would continue, with the Sun consuming heavier and heavier fuel in concentric layers. Each layer would take less time than the last, all the way up to nickel – which could take just a day to burn through.And roughly 1.2 billion years after it leaves the main sequence, at the height of its glory as a red giant, the center of the helium core of the Sun will become sufficiently massive, dense, and hot that something amazing will happen: within a matter of minutes, it will ignite and burn.I hope it will help you.Thanks!
6.

In the united states, what portion of high school students get the recommended levels of physical activity? a) 1/4 b) 1/3 c) 1/2 d) 1/5

Answer»

1/5 OPTION d............

7.

An a-particle is accelerated from rest through a potential of V volts. Its final kinetic energy is (1) 2 eV(2) 1 eV(3) 4 eV(4) 1/2 ev​

Answer» ANSWER is 2 EV Explanation:HOPE it is HELPFUL
8.

Two rods, one made of brass and the other of lead, have the same dimensions. When a particular stress is applied to the brass rod, it stretches by 0.18 mm. How much does the lead rod stretch under the same stress? Use a value of 9.0×10 10 Pa for the Young’s modulus of brass and use a value of 1.6×10 10 Pa for the Young’s modulus of lead.

Answer»

tion:The DIAMETER of a brass rod is 4 mm and YOUNG's MODULUS of brass is 9×10 10 N/m 2 . The force REQUIRED to stretch by 0.1% of its length is :- ANSWERANSWERY= ANSWERY= AΔlANSWERY= AΔlFLANSWERY= AΔlFL ANSWERY= AΔlFL ANSWERY= AΔlFL F= ANSWERY= AΔlFL F= LANSWERY= AΔlFL F= LYΔlAANSWERY= AΔlFL F= LYΔlA ANSWERY= AΔlFL F= LYΔlA = ANSWERY= AΔlFL F= LYΔlA = LANSWERY= AΔlFL F= LYΔlA = LYA×0.1LANSWERY= AΔlFL F= LYΔlA = LYA×0.1L ANSWERY= AΔlFL F= LYΔlA = LYA×0.1L =0.1YA=0.1×9×10 ANSWERY= AΔlFL F= LYΔlA = LYA×0.1L =0.1YA=0.1×9×10 10ANSWERY= AΔlFL F= LYΔlA = LYA×0.1L =0.1YA=0.1×9×10 10 ×π×( ANSWERY= AΔlFL F= LYΔlA = LYA×0.1L =0.1YA=0.1×9×10 10 ×π×( 2ANSWERY= AΔlFL F= LYΔlA = LYA×0.1L =0.1YA=0.1×9×10 10 ×π×( 24×10 ANSWERY= AΔlFL F= LYΔlA = LYA×0.1L =0.1YA=0.1×9×10 10 ×π×( 24×10 −3ANSWERY= AΔlFL F= LYΔlA = LYA×0.1L =0.1YA=0.1×9×10 10 ×π×( 24×10 −3 ANSWERY= AΔlFL F= LYΔlA = LYA×0.1L =0.1YA=0.1×9×10 10 ×π×( 24×10 −3 ANSWERY= AΔlFL F= LYΔlA = LYA×0.1L =0.1YA=0.1×9×10 10 ×π×( 24×10 −3 ) ANSWERY= AΔlFL F= LYΔlA = LYA×0.1L =0.1YA=0.1×9×10 10 ×π×( 24×10 −3 ) 2ANSWERY= AΔlFL F= LYΔlA = LYA×0.1L =0.1YA=0.1×9×10 10 ×π×( 24×10 −3 ) 2 =360πmark as brainlist plz.

9.

What is the graph of space time??.​

Answer»

A space-TIME DIAGRAM is nothing more than a graph showing the position of OBJECTS as a function of time. The usual convention is that time runs up the diagram, so the bottom is the past, or early TIMES, and the TOP is the future, or late times.

10.

Do stars have orbit??and they revolve around whom...!!!​

Answer»

now Sun is also a Star..They don't REVOLVES around anything but they MAKE HEAVILY BODIES revolve around themselves... therefore they do not have an orbit...Stars have their unique Solar system.Thanks I think it will HELP you

11.

Obtain the dependence of potential on the distance 'r' of a point from the origin when r is very very less than 1

Answer» MARK me BRAINLIEST i WANT you to HELP
12.

A bus decreases its speed from 80 km /hr to 60km/hr in 5 sec. Find the acceleration of the bus.

Answer» HOPE the ATTACHMENT HELPS you.... ☺
13.

A man travels a distance of 1.5 m towards the east,then 2m towards the south and 4.5m towards the east. Find the total distance travelled and the net displacement

Answer»

tion:RESULTANT displacement can be FOUND using the Pythagoras THEOREM. Resultant displacement will be GIVEN by the hypotenuse, if the distance in east direction (i.e.) 1.5+4.5= 6 m is considered as base of the triangle and distance in south direction (i.e.) 2 m is considered as HEIGHT of the triangle.

14.

In a x ray tube acclerating potential is 60 kv . What is the maximum frequency of x ray

Answer» EXPLANATION:PLS FIND the ATTACHMENT
15.

What is the formulae for acceleration?

Answer»

In mechanics, acceleration is the rate of change of the velocity of an object with respect to time. ACCELERATIONS are vector quantities. The orientation of an object's acceleration is given by the orientation of the NET force acting on that object.Explanation:PLEASE MARK as BRANLIST

16.

A rectangular surface of sides 10 cm and 15 cm is placed inside a uniform electric field of 25 V/m.such that the surface makes an angle of 30° withthe direction of electric field. Find the flux of theelectric field through the rectangular surface(1) 0.1675 N/m2C (2) 0.1875 Nm2/C(3) Zero(4) 0.1075 Nm2/C​

Answer» EXPLANATION:PLS FIND the ATTACHMENT
17.

Find the total current pass through the circuit as shown in figure​

Answer»

no FIGURE GIVE .PLEASE provide PROPER question to expect a response

18.

What do you understand by the term friction? Explain clearly why it comes into play? How will you distinguish between static friction and dynamic friction?

Answer»

n is not a type of fundamental FORCE like electromagnetic and gravity force, but it is the type of force which always opposes the object motion which is in contact with it.When the two object in contact with each other their surface are somehow irregular means rough, DUE to which they get interlocked with each other and here friction force comes in the picture and opposes the motion of the object and the OPPOSITION which we see is nothing just friction force.1). STATIC friction--- It is type of friction force which act between two object ,which are not moving relative to each other.2). kinetic friction--- It is the type of friction which act between two moving object, it means which are in motion.

19.

The displacement of a body is proportional to t3, where t is time elapsed. What is the nature of acceleration -time graph of the body? Explain. spam answers with no explanation will be reported. Dont ruin the quality of the site

Answer» ATION -TIME graph of the body   has constant SlopeExplanation:s = displacement s  ∝  t³=> s  = kt³v  =  ds/dt => v =  d( kt³)/dt=> v = 3kt²a  = dv/dt=> a  =  d (3kt²)/dt=> a = 6kta = 6kt Comparing with y = mx  + cm = 6k     C  = 0acceleration -time graph of the body   has constant Slopeat t= 0 acceleration = 0 Graph is attached fyrLearn more:Draw the distance-time and acceleration time graph corresponding ...brainly.in/question/17102571draw the distance time and acceleration time graph corresponding ...brainly.in/question/17096955Consider the motion of the OBJECT whose velocity-time graph is given ...brainly.in/question/16746118
20.

A car covers the first half of the total time taken for the journey with velocity v1 and second half with velocity v2. find the average speed of the journey. pls answer ASAP also pls try to stay relevant​

Answer» EXPLANATION:PLS FIND the ATTACHMENT
21.

What is JONA LED ?Is it only in India ?​

Answer»

Our process begins with your vision. When it comes to creating a one-of-a-kind DESIGN for your SPACE, JonaLed offers leading LED display TECHNOLOGY and solution to TRANSFORM your space into a digital world. JonaLed is an Indian based leading brand of LED Display products for most versatile and visual applications. Each of our Led is customized to serve the unique needs of each client. No matter the size or scale of your project, JonaLed works with each client to develop LED display technology SOLUTIONS in almost any configuration, shape, curve, or size to create a revenue-turning customer experience. We offer all kinds of LED display solution for auditoriums, electronic billboards, stage events, concerts, malls, market squares, offices, hotels, restaurants, and banquets.Explanation:please mark as branlist

22.

The ratio of initial to final current through the battery when the switch is closed in the figure is

Answer» ANSWERAT t=0 , switch CLOSED,I 1 = 2RE At STEADY state after s closedI 2 = 23 RE = 3R2E Ratio I 2 I 1 = 43
23.

Loud sound,it occurs with lighting

Answer» LOUD SOUND it OCCURS with lightning because of clouds FRICTION
24.

10 sentences in which quantities and units are included in it

Answer» UR ANS WER is above PHOTO
25.

For laser action to occur, the medium used must have at least three energy levels. What must be the nature of each of these levels? Why is three the minimum number?

Answer»

A laser PRODUCES a beam of light with same frequency and are coherent. Medium plays a very IMPORTANT role for production of Laser . It can be Crystal, Solid,LIQUID , Semiconductor or gas can be send to excited state. The material must have controlled PURITY ,size and shape and must have three energy levelsExplanation:here's the ANSWER please follow me

26.

How to simplify (2u+at/2)t​

Answer»

(2u+at/2)t2ut+at^2/2plz TOUCH the BRAINLIEST ANSWER

27.

Answer with reason?​

Answer» B is the right ANSWEREXPLANATION:please MARK as branlist
28.

A 7 tonne truck initially moving at a velocity of 50m / s accelerates to 110m / s in 3 seconds Calculate the force on the truck that causes the velocity to change

Answer»

force on the  7 tonne truck that causes the velocity to change from 50 m/s to 110 m/s in 3 secsExplanation:Force =  Mass * acceleration=> F  = m aa = dv/dt=> F  = M dv/dtdv/dt  = ( 110 - 50)/3  = 20  m/s²m =  7 tonne  = 7000 kg=> F   = 7000 * 20 => F = 140,000  N => F = 140 kN140 kN  force on the truck that causes the velocity to change Learn more:Force acting on a particle of mass 2KG is given by F(t)=4t-8. Find the ...brainly.in/question/17424917A Body Of Mass 6 Kg MOVES In A Straight Line ALONG Y AXIS The ...brainly.in/question/11144814a body of mass m has its position x at a time t expressed by the ...brainly.in/question/12044824

29.

I need answers asap Also dont spam random bs

Answer»

Before The dough was dropped it has Gravitational potential energy acting on it , which CHANGES into kinetic energy after the dough is released.CASE 2:Just before the ball dropped the FLOOR ,it has kinetic energy which will further changes to potential energy .Case 3:After the dough hits the floor ,The kinetic energy changes to potential energy and potential energy changes to Sound energy and HEAT energy (in a very little AMOUNT).

30.

A projectile is fired at a velocity of 150 m/s at an angle of 300 with the horizontal. What is the magnitude of the vertical component of the velocity at the time the projectile is fired? (a) 150 m/s (b) 75 m/s (c) 225 m/s (d) 130 m/s

Answer»

ince the object makes 30° with the HORIZONTAL... I can SAY... Horizontal COMPONENT of velocity = vcos30° = 75√3And vertical component = vsin30° = 150/2 = 75m/s

31.

show that the reciprocal lattice of face-centered cubic lattice is body-centered cubic lattice. Briefly explain how the unit vectors you obtained describe a body-centered cubic lattice.

Answer»

tion:In physics, the reciprocal lattice represents the Fourier transform of another lattice (usually a Bravais lattice). In normal usage, the initial lattice (WHOSE transform is represented by the reciprocal lattice) is usually a periodic spatial function in real-space and is also known as the direct lattice. While the direct lattice exists in real-space and is what one would commonly understand as a physical lattice, the reciprocal lattice exists in reciprocal space (also known as momentum space or less commonly as K-space, due to the RELATIONSHIP between the Pontryagin DUALS momentum and position). The reciprocal of a reciprocal lattice is the original direct lattice, since the two are Fourier transforms of each other. Mathematically, direct and reciprocal lattice VECTORS represent covariant and contravariant vectors, respectively.The reciprocal lattice plays a very fundamental role in most analytic studies of periodic structures, particularly in the theory of diffraction. In neutron and X-ray diffraction, due to the Laue conditions, the momentum difference between incoming and diffracted X-rays of a crystal is a reciprocal lattice vector. The diffraction pattern of a crystal can be used to DETERMINE the reciprocal vectors of the lattice. Using this process, one can infer the atomic arrangement of a crystal.

32.

What is... thermal insulation??????​

Answer»

thermal insulationExplanation:Thermal insulation is the reduction of heat transfer between objects in thermal contact or in range of RADIATIVE influence. Thermal insulation can be ACHIEVED with SPECIALLY engineered methods or processes, as well as with suitable OBJECT shapes and materials.

33.

On an open ground, a motorist follows a track that turns to his left by an angle of 600 after every 500 m. Starting from a given turn, specify the displacement of the motorist at the third, sixth and eighth turn. Compare the magnitude of the displacement with the total path length covered by the motorist in each case.

Answer»

-On an OPEN ground, a motorist FOLLOWS a track that turns to his left by an angle of 600 after every 500 m.To Find :-Compare the magnitude of the displacement with the total path length covered by the motorist in each case.Solution :-Given that,The path followed by the motorist is a regular hexagon with side 500 m.Let us consider,Let the motorist start from POINT P.The motorist takes the third turn at S.Magnitude of the displacement = PS = PV + VSSubstituting them,Now,Total path length = PQ + QR + RSBy substituting,The motorist takes the 6TH turn at point P, which is the starting point.Then,Magnitude of displacement = 0Total path length = PQ + QR + RS + ST + TU + UPSubstituting their values,The motorist takes the eight turn at point R.Magnitude of displacement = PRBy substituting,Therefore, the magnitude of displacement is 866.03 m at an angle of 30° with PR.Total path length = Circumference of the hexagon + PQ + QRSubstituting them,

34.

List out the limitations of Coulomb's law.

Answer» SORRY i don't KNOW about this lawExplanation:
35.

A car accelerates with uniform rate from Reston a straight road. The distance travelled in the last second of a three second interval from the start is 15m then find the distance travelled in first second. ​

Answer» MARK as BRANLIST
36.

In travelling from Pune to Nagpay Rahul drove his bike for 2 hr at 60km/hr and 3hr at 70km/hr.Find the average speed.​

Answer»

65km /hrExplanation:TOTAL distance TRAVEL = (60+70 )km =130kmtotal time = (2+3)hr =5hraverage SPEED=(total distance traveled/total time taken)AVERAGE speed= (130/5)km/hraverage speed= 65km/hr (answer)this may help you!!!!!please mark this answer as brainlist answer please please please please please please please please please please please please please please please please please please

37.

Tential Ice X-23/ In a Young's double slit experiment, slits areseparated by 0.5 mm, and the screen is placed 150cm away. A beam of light consisting of twowavelengths, 650 nm and 250 nm, is used to obtaininterference fringes on the screen. The leastdistance from the common central maximum to thepoint where the bright fringes due to both thewavelength coincide is:(1) 1.56 mm(2) 7.8 mm(3) 9.75 mm(4) 15.6 mm​

Answer» 2....................
38.

Write the significance of radius of gyration

Answer» TION:if it is WRITE , so don't MIND it .. OKAY
39.

Answer? with reason?​

Answer»

(C) 2LExplanation:PLS FIND THE ATTACHMENT

40.

Can anyone answee this question part b? I need answers asap

Answer»

Explanation:slope of distance vs time graph gives SPEED;speed = dist/time;slope would be = (y2 - y1)/(x2-x1);slope = (700-300) / (60-30);slope = 400/30;hence the AVERAGE speed would be 13.33 approxI Hope this is clear to you now.If you still face any QUERY in any part of the solution i have PROVIDED to you, Feel free to message me or you can also ask in the COMMENT section of this question.Please mark this as brainliest!!

41.

23. In a Young's double slit experiment, slits are separated by 0.5 mm, and the screen is placed 150cm away. A beam of light consisting of twowavelengths, 650 nm and 250 nm, is used to obtaininterference fringes on the screen. The leastdistance from the common central maximum to thepoint where the bright fringes due to both thewavelength coincide is:(1) 1.56 mm(2) 7.8 mm(3) 9.75 mm(4) 15.6 mm​

Answer»

(3) 9.75 mmExplanation:PLS FIND the ATTACHMENT

42.

23. In a Young's double slit experiment, slits are separated by 0.5 mm, and the screen is placed 150cm away. A beam of light consisting of twowavelengths. 650 nm and 250 nm is used to obtaininterference fringes on the screen. The leastdistance from the common central maximum to thepoint where the bright fringes due to both thewavelength coincide is:(1) 1.56 mm(2) 7.8 mm(3) 9.75 mm(4) 15.6 mm​

Answer»

I THINK OPTION 3 is correct 9.75Explanation:follow methanks.....MARK me as brainliest ANSWER

43.

Shown in the figure here is a convergent lens placed inside a cell filled with a liquid. The lens has focal length +20 cm when in air and its material has a refractive index 1.50. If the liquid has refractive index 1.60, the focal length of the system is

Answer» TION:f = R / 2(N -1)for convex lensf = R / 2(1.5 -1)f=Rfor plano concavef' = R / (n -1)f' = R / (1.6 -1)f' = f/ 0.6Net f1/f^ = 1/f - 2/f'1/f^ = - 0.2/f = -0.2/ 20F^ =  -100cm
44.

The arithmetic mean of inital and final velocity

Answer»

The arithmetic mean of inital and FINAL VELOCITY ISU and V Formula is v-u/t

45.

How does the value of g on the earth is related to the mass of the earth and its radius?derive it.​

Answer»

.......❤The value of G is INFLUENCED by the mass and radius of earth as g is acceleration of an object DUE to earth's gravitational force. The earth PULLS everything on its surface towards its centre,so the distance between the centre and the object which is indirectly the earth's radius,has to be considered.Hope it's helpful....... ☺

46.

. Two-point charges qa= 6uC and qu=-6uC are located 20cm apart in vacuum. (a) What is the electric field at the midpoint of line AB joining two charges?(b) If a negative charge of 2.5 x 10-°9 C is placed at the midpoint, calculate the forceexperienced by this charge.​

Answer»

Y is a great PLACE for a FAMILY that is a chuChExplanation:Tifif is a great idea for a NEW one and only you are not going anywhere in the morning I will be in the office for a few DAYS or a WEEK or so after the holidays but I will be in touch if I can get you to do it for

47.

What is the resultant force when two forces of 20 N and 25 N acting in same direction

Answer»

45NExplanation:SINCE both forces are in same direction they GET ADDED up.Please mark as brainliest if it was helpfull

48.

A thermodynamic system is taken from state A to state B to state C, and then back to A, as shown in the p-V diagram of Fig. 1a. The vertical scale is set by Ps = 40 Pa, and the horizontal scale is set by Vs = 4.0 m3. (a) Complete the table in Fig. 1b by inserting a plus sign (+), a minus sign (-), or a zero (0) in each indicated cell. (b) What is the net work done by the system as it moves once through the cycle ABCA?A thermodynamic system is taken from state A to state B to state C, and then back to A, as shown in the p-V diagram of Fig. 1a. The vertical scale is set by Ps = 40 Pa, and the horizontal scale is set by Vs = 4.0 m3. (a) Complete the table in Fig. 1b by inserting a plus sign (+), a minus sign (-), or a zero (0) in each indicated cell. (b) What is the net work done by the system as it moves once through the cycle ABCA?

Answer»

hey mate I only no this much sorryExplanation:A to B: .... dE is GIVEN to be greater than zero. Work DONE = P DV . since here dV is positive W >0 ; Q= E + W ==> Q>0 so: a. +1 b. +1 B to C: Q is given to be positive; work done =0 since d

49.

Time-velocity graph of a body is shown in figure calculate the following a) distance travelled in first 10s b) acceleration at t = 15s

Answer» COULD we see the time VELOCITY graph? in most cases, the time will be in the x AXIS. EXPLANATION:
50.

11. From a height, two balls are thrown with equalspeed, one vertically upwards and other verticallydownwards. They take time t1, and t2 respectivelyto reach the ground. If a third ball is dropped fromsame height, then time taken to reach the groundwill be(1) t1+t2/2(2) √t1t2(3) 2t1t2/t1+t2​

Answer»

remember this that apply DIMENSIONS and CHECK ANSWER .... tsquare = t×t so t3=t1×t2