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 are the evidences of evolution

Answer»

Evidence of COMMON descent of living organisms has been discovered by scientists researching in a variety of disciplines over many DECADES, demonstrating that all life on EARTH comes from a single ancestorm

2.

Write the name of organic compounds which have the following structureplz answer my questions quickly

Answer»

I HOPE it will HELP you

3.

What is the use of aluminium in electronic configuration?

Answer»

The electron configuration for aluminum is 1s2 2s2 2p6 3s2 3p1.

Aluminum is found in the first space of the THIRD ROW of the p-block (COLUMNS 13-18) on the periodic table. This MEANS that its electron configuration ENDS in 3p1. All lower energy levels and sub-shells are complete. The noble gas, inner core electron configuration for aluminum is:



4.

What is the relationship of current and voltage in a purely inductive circuit?

Answer»

The phase difference is <= 90 degrees. It is CUSTOMARY to USE the angle by which the VOLTAGE leads the current. This leads to a positive phase for INDUCTIVE circuits since current lags the voltage in an inductive circuit. The phase is NEGATIVE for a capacities circuit since the current leads the voltage.

5.

give me the answer with reason

Answer» hey mate ..!!

thanks for asking questions!!
____________________________________

answer is option :(b)

reason:


____________________________________

if a ball is moving from left to right and also spinning about the horizontal AXIS in anticlockwise direction about a horizontal Axis perpendicular to the direction of MOTION then relative to the ball is in moving from right to left
the resultant VELOCITY of the air about the ball will be while below it so in accordance with BERNOULLI principal , pressure above the ball will be less than below it
due to this difference of pressure an upward force will act on the ball and hence the ball will deviate from its usual path OAo and will hit the GROUND at A1 following path OA1
that is is a ball is thrown with back spin the pitch curve less sharply prolonging the flight

hope it may help u✌️✌️

be brainly.
6.

Find the expression for the rotational kinetic energy of a rotating body.

Answer» HII There!!!

Here is your ANSWER....

__________________
# ¢' $ #

HOPE it HELPS
7.

Pls help me solve this circuit question. pls

Answer» UR QUESTION is MAY be INCOMPLETE
8.

What is the relation between specific and equivalent conductance?

Answer»

There is a subtle difference between specific conductance and equivalent conductance.

As you might have heard before, for specific conductance is actually conductivity of a solution(for cases of electrochemistry), meaning it is the conductance of a given solution for a very special case.

Specific Conductance or conductivity is the conductance of a given solution enclosed in a cell having two electrodes of unit area and are separated by 1cm.

We know that Conductance(C)= Conductivity(K)*A/l

Thus, Conductivity or Specific Conductance(K)=Conductance*l/A

While Equivalent Conductance is also a specific case but a little different than that of the previous one.

Equivalent Conductance is the conductance of all the ions produced by one gram equivalent of an electrolyte in a given solution.

Let Vcm^3 of solution is considered.

We can say that the equivalent conductance is directly proportional to the volume of solution considered, as more the ions, more the conductance.

Thus, Equivalent Conductance(Λ )= Equivalent Conductivity(k)*V(in cm^3)…….(1)

So, here, Equivalent Conductance is the conductance of ions present in Vcm^3 of solution containing 1gm equivalent of the electrolyte, while Equivalent Conductivity is the specific case for unit volume.

Now, to RELATE this equation with gm equivalent(as defined for gm equivalent), we know that Normality= No. of gm equivalents/Volume(in lit). As we have considered a solution containing 1 gm-equivalent.

Thus, Equivalent Conductance(Λ)= Equivalent Conductivity(k)*1000/Normality.

1000 is multiplied as Equivalent Conductance is defined for volume in cm^3 while Normality is defined for volume in litres.

Now, this was all about Specific Conductance and Equivalent Conductance, now coming to your question for relation between them.

With reference to used symbols for various quantities.

K=C*l/A

Multiplying with A in numerator and DENOMINATOR in RHS.

K=C*V/(A^2)

If we consider the solution for unit volume.

K=C*V

Now, you can SEE that this equation is very similar to equation(1).

So, now you should understand that specific conductance is just a concept to quantify and express conductivity of a solution, while Equivalent Conductivity is a special case of it, while considering gm-equivalents, similarly we may also have molar conductivity which is considered for moles in a solution.

So, you can directly, say that Equivalent Conductance = Specific Conductance(when considered for gm-equivalents)* Volume.

9.

Calculate the potential energy of a ball of mass 200 g placed at a height of 5 m above the ground.

Answer»

POTENTIAL ENERGY=mgh

m=200g =200/1000 kg

=0.2kg

h=5m

g=10m/s²

So,

Potential energy= 0.2*5*10

=10joule

10.

Why image of the object is of the same size irrespective of the size of mirror

Answer»

In this case, the IMAGE is magnified; in other words, the image dimensions are greater than the object dimensions. ... Finally, the image is a virtual image. Light rays from the same POINT on theobject REFLECT off the mirror and DIVERGE upon reflection.

Thank You!

11.

What is the formula of frequency of oscillation for rc phase shift oscillators?

Answer»

Op-amp oscillator

My aim is to find the oscillation frequency of a Phase Shift Oscillator.



I start by finding transfer function of the cascaded RC network.

VO(s)=1C3sR3+1C3sV2(s)=11+R3C3sV2(s).Vo(s)=1C3sR3+1C3sV2(s)=11+R3C3sV2(s).

Similarly,

V2(s)=11+R2C2sV1(s)andV1(s)=11+R1C1sVi(s).V2(s)=11+R2C2sV1(s)andV1(s)=11+R1C1sVi(s).

Then the transfer function is:

H(s)=Vo(s)Vi(s)==1(1+R1C1s)(1+R2C2s)(1+R3C3s)1R1R2R3C1C2C3s3+…⋯(R1R2C1C2+R2R3C2C3+R1R3C1C3)s2+…⋯(R1C1+R2C2+R3C3)s+1H(s)=Vo(s)Vi(s)=1(1+R1C1s)(1+R2C2s)(1+R3C3s)=1R1R2R3C1C2C3s3+…⋯(R1R2C1C2+R2R3C2C3+R1R3C1C3)s2+…⋯(R1C1+R2C2+R3C3)s+1

So the frequency response is:

H(jω)=1jω[(R1C1+R2C2+R3C3)−R1R2R3C1C2C3ω2]+…⋯[1−(R1R2C1C2+R2R3C2C3+R1R3C1C3)ω2]H(jω)=1jω[(R1C1+R2C2+R3C3)−R1R2R3C1C2C3ω2]+…⋯[1−(R1R2C1C2+R2R3C2C3+R1R3C1C3)ω2]

Now, we are looking for a special ωω value, ω0ω0, for which the argument of H(wj)H(wj) will be ±180o±180o. Clearly, it happens when

R1C1+R2C2+R3C3=R1R2R3C1C2C3ω2∣∣ω=ω0.R1C1+R2C2+R3C3=R1R2R3C1C2C3ω2|ω=ω0.

Hence we find the oscillation frequency as

ω0f0==R1C1+R2C2+R3C3R1R2R3C1C2C3−−−−−−−−−−−−−−−−−−√12πR1C1+R2C2+R3C3R1R2R3C1C2C3−−−−−−−−−−−−−−−−−−√.ω0=R1C1+R2C2+R3C3R1R2R3C1C2C3f0=12πR1C1+R2C2+R3C3R1R2R3C1C2C3.

When R1=R2=R3=RR1=R2=R3=R and C1=C2=C3=CC1=C2=C3=C:

f0=3–√2πRCf0=32πRC

However, according to all online articles including Wikipedia, the formula for the oscillation frequency is

f0=12πRC6–√.


12.

What does the maximum speed denotes. Initial velocity or final velocity?

Answer»

As from its NAME, Maximum SPEED, we GET to know that its the highest limit of any body to PRODUCE acceleration, but its obvious that the object must have started with some small acceleration which further increased the speed gradually.

So concluding maximum speed is the final speed of any body.

13.

Phenomena which shoes both particle and wave nature of light

Answer»

You can experimentally witness the dual NATURE of light, that is wave and particle in "Double Slit EXPERIMENT".

If you actually wanna get more knowledge about it, then REFER to Class 12th Physics Part-2, Wave OPTICS, or if you are already in class 12th or a passed out, then refer to the Feynman lectures of Physics, Volume-3.

14.

What happens when earthquakes occur?

Answer» DUE to the collision PLATES under the earth SURFACE, the earth quakes occur.....

HOPE it helps you...........
15.

A substance used for producing heat energy is known as..?

Answer»

Matter is made up of atoms and molecules (GROUPINGS of atoms) andenergy causes the atoms and molecules to ALWAYS be in motion - either bumping into each other or vibrating back and forth. The motion of atoms and molecules creates a FORM of energy called heat or thermal energy which is present in all matter.

All matter contains heat energy. Heat energy is the result of the MOVEMENT of tiny particles called atoms, molecules or ions in solids, liquids and gases. Heat energy can be transferred from one object to another. Thetransfer or flow due to the difference in temperature between the two OBJECTS is called heat.

16.

What is lcr circuit? Calculate impedence and current in the circuit?

Answer» ICR MEANS In - CIRCUIT RECONFIGURATION
17.

Acceleration due to gravity remain constant or increase with height

Answer»

Acceleration due to GRAVITY ALWAYS remain CONSTANT for a particular PLANET.

18.

If coller a is given a constant upward velocity then find acceleration of collar b

Answer»

The ANSWER is
COLLER B is VOWEL

19.

If light of speed will occur in humans begins what will effect?

Answer»

It is impossible to travel at the speed of light; answering this from a scientific standpoint is impractical.

However, a few INTERESTING considerations can be made regarding the effects on the human body.

Energy — It takes an infinite amount of energy to accelerate a particle to the speed of light because its RELATIVISTIC mass gradually increases to infinity[1]. To obtain an infinite source of energy—you need to obtain an infinite source of mass. It IMPLIES that you’ve destroyed the universe in this process.

Acceleration — You body will be subject to tremendous amount of forces; death is inevitable. Your body will be RIPPED apart.

Time — Your perception of time comes to a stop—you will notexperience time[2].

Vision — Everything you see in the direction in which you’re traveling will be extremely blue-shifted into extremely short wavelengths.

20.

Write the efforts of usage of plastics in polluting our surrounding?

Answer» PLASTIC shopping bags on land are one of the most common types of litter. Build ups of huge quantities of plastic bags are well known to block local drainage systems, especially in developing countries. For EXAMPLE, the floods in Bangladesh 20 YEARS ago were partially attributed to blockages in drainage systems from plastic shopping bags. Plastic shopping bags also pose HEALTH risks to human populations over the years as they leach toxins into water supplies.

Plastic bags also are problematic to recycle. While the recyclable symbol of THREE arrows in a circle is on many plastic shopping bags in the US, it often is a marketing trick. There are no regulations about how that symbol is used, and every city and county in America has different regulations about what can be recycled. Many plastic bags that are collected by recycling companies cannot really be recycled. Most of these bags actually end up in landfills and sit there for hundreds of years.

21.

Derive an expression for acceleration due to gravity of mass M of earth and its radius r

Answer»

G=Gm1m2/r2 is the FORMULA for ACCELERATION DUE to GRAVITY

22.

Find out the cation and anion in the given formula NACL

Answer» NA : CATION ; CL : ANION
23.

Please answer this question I will make you brainliest

Answer»

mass of truck= 1000 kg

initial speed of truck= 36 km/h= 10 m/s

FINAL speed of truck= 72 km/h= 20 m/s

Initial KINETIC energy of truck= 1/2 *1000*10*10

                                               = 50000 J

Final kinetic energy of truck= 1/2 *1000*20*20

                                              = 200000 J

Increase in the kinetic energy of truck= final K.E. - initial K.E.

                                                               = 200000-50000

                                                               = 150000 J

24.

What is an element and name the appliances that work on heating effect of electric current?

Answer»

The purest substance with definite MASS and fixed PROPORTIONS are known as elements. heater, electric iron, electric GEYSER etc. are the appliances that WORK on heating AFFECT of electric current

25.

The weight of a body on the surface of the earth is 10kg. Its weight at the centre of the earth is

Answer»

Its weight at the centre of earth is 0N as the gravity is ZERO in CENTER of earth plz follow me plz plz plz

26.

Comparison atomic size of F & Ne

Answer»

Ne is SMALLER than F
As ATOMIC SIZE decreases as we MOVE across periods

27.

Polygon law of vectors

Answer»

Hii dear here is your answer


Polygon LAW of vector addition STATES that if a number of vectors can be REPRESENTED in magnitude and direction by the sides of a polygontaken in the same order, then their resultant is represented in magnitude and direction by the closing SIDE of thepolygon taken in the opposite order.


Hope it's help U

28.

What is the distance travelled by a body thrown upwards with a speed of 20m/s, under the effect of gravity [ Take g = 10 ] in the 3 second of its motion?

Answer» HOLA User__________________

Here is Your Answer..!!
__________________________

⭐ACTUALLY WELCOME TO THE CONCEPT OF THE KINEMATICS

⭐Basically here we use the second equation of the MOTION and we GET as FOLLOWS ...
29.

A liquid of density d in a container is accelerating along horizontal with acceleration a then the pressure differnce between Two point at same horizontal level separated by a distance l is given by(1)zero(2)dgl (3)dal(4)d(a+g)l

Answer» 1. zero
PLEASE MARK MY ANSWER AS A BRAINLIEST ANSWER.
30.

A 50 uf capacitor in a defibrillator is charged to 3000v.the energy stored in a capacitor is transferred through a victim of during a pulse of duration of 2ms.what is power . ...solution

Answer»

<P>p=(1/2Cv²)/t

C=50x10⁶

v=3×10³

t=2×10⁻³

p=(1/2×50x10⁶×(3×10³)²)/3×10³

=75kW

31.

Name some traditional water harvesting system in india

Answer»
32.

The density of copper metal is 8.95 g/cm3 find the charge needed to

Answer» HI my dearest friend I think so your question is INCOMPLETE .please finish the question and then POST it in the COMMENTS box ... WAITING for your question
33.

Which falls faster a bigger raindrop or small raindrops why?

Answer»

Bigger raindrop. it has more weight hence the force of ATTRACTION between the SURFACE of the earth and the raindrop is more COMPARED to the the SMALL raindrops.

34.

What is the aims of electromagnetic induction

Answer» PROPERTY of electromagnetic induction is USED in ELECTRICAL GENERATOR
35.

Who was the Kepler's and how it help to the Newton to formulate is universal law of gravitation

Answer»

Don't KNOW SEARCH GOOGLE

36.

How the unit of universal gravitation come has a Newton metre square kg Inverse Square

Answer»

Don't know google it or SORRY i WANTED POINTS ACTUALLY

37.

Write a short note on physics???

Answer»

Physics, science that deals with the structure of matter and the interactions between the fundamental CONSTITUENTS of the observable universe. In the broadest sense, physics (from the Greek physikos) is concerned with all aspects of nature on both the macroscopic and submicroscopic levels. Its SCOPE of study encompasses not only the BEHAVIOUR of objects under the action of given forces but also the nature and ORIGIN of gravitational, electromagnetic, and nuclear force fields. Its ultimate objective is the formulation of a few comprehensive PRINCIPLES that bring together and explain all such disparate phenomena.

Hope it helps you.

please mark it as brainliest

38.

What would happen when one touches the power plug with wet hands or when one is barefoot?

Answer»

Then he will GET a SHOCK with a HUGE SPARK and he or she will BURN.

39.

the force of gravitation act on Apple on the tree at a different height from the surface of the earth can it also act on the object at even greater Heights much further away from the Earth like for example the moon can IT Act on even further object like the other planets and the sun

Answer»

Yes, it does but in a specific MANNER. The attraction outside the atmosphere is not so strong so it cannot PULL the HEAVENLY bodies to earth rather it BINDS with them in such a way that all the heavenly bodies MOVE in a manner.

40.

Write two feature of laser ray

Answer»

The LASER rays are ABLE to identify the persons and MAKE sound when they are CAPTURED on them. They are RED in colour.

41.

A submarine emits a SONAR pulse which returns from an underwatet cliff in 1.02 second .If the speed of sound in salt water is 1531 m/s,how far away is the cliff?

Answer»

SPEED = Distance/time

Distance = Speed × time

Distance = 1531 × 1.02

Distance = 1561.62 m

42.

The magnitude spectrum of fourier transform of real valued time signal has

Answer»

For REAL TIME SIGNAL

43.

Hlo frndsshow me.the reaction of ALUMINIUM REACTS WITH DILUTE HYDRO CHLORIC ACIDthanks❤️

Answer»

✨ Hey MATE
▶Here's the chemical REACTION ➖⤵➖⤵➖⤵➖⤵➖⤵➖⤵➖⤵

Al + HCl ➡ AlCl2 + H2

HOPE it helps ♥

44.

What IsVectors ? What Is Motion ? What Is Grafity ? Whatis Accerelation ? Velocity ? Centerpitalforce? Projectile Motion? ?Speed? Displacment ??Distance? Magnetic Fields? Power? Simple Machine? Wave? Electricity ? Scalar ?

Answer»

VECTOR- A quantity having both magnitude and direction .

Scalar- A quantity having only magnitude.

Motion- A change of in position of an object over time.

Acceleration- Change in velocity of an object with respect to time.

Velocity- SPEED with direction.

Speed- The rate at which the object covers distance.

Distance- Measurement of length between TWO points.

Displacement- Shortest distance COVERED by the object.

Projectile motion- A form of motion experienced by an object.

Centripetal force- The force on an object on a circular path.

Gravity- The force of attraction between all masses in the universe; especially the attraction of the earth's mass for bodies NEAR its surface.

Magnetic field- Area around a magnet.

Power- Rate of work done by an object.

Wave- Transport of energy without the transport of matter.

Simple machine- A mechanical device that changes the direction or magnitude of force.

Electricity- Moving of electric charges.

45.

What are the two subkingdoms of plant kingdom

Answer» MULTICELLULAR GREEN and FIXED ORGANISMS
46.

Static friction and kinetic friction diffenation

Answer» STATIC FRICTION : the friction which COMES into
PLAY when the body is in rest.
kinetic friction : the friction which comes into play when the body is in motion.
47.

Work done by a boy in pulling a toy car with string

Answer» WORK DONE here ZERO
48.

Consider a heavy body whose mass is 3*10²⁴ kg and radius is 3200km.What is the acceleration due to gravity at its surface??( G=6.67*10^-11)

Answer»

M = 3*10^24 kg
R = 3200KM = 32*10^5 m
G = ?
G = 6.67*10^-11

F = GMm/R^2 -----------(1)
also,
F = mg ------------(2)
g is a accelaration DUE to gravity.
compare eqn (1) &(2)
mg = GMm/R^2
:. g = GM/R^2
:. g = (6.67 * 10^-11 * 3*10^24)/(32*10^5)^2
:. g =19.54 m/s^2
Hope this will help u.....

49.

What is reverberation? how can it be reduced?

Answer»

It is noticeable in BUILDINGS or outdoor areas that have walls that REFLECT sound instead of absorbing it well. To create an audio recording studio, to KEEP noise down in a busy office or for other reasons, DESIGNERS or those modifying a room often want to reduce reverberation.

Hope it HELPS

:)

50.

A 10 g bullet is fired from a gun of certain mass with a speed of 2000 m/s. Find themass of gun if a recoil velocity of gun is 5 m/s.

Answer» MASS =2000/5 m/s =400
=400*10=4000g or 4KG