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.

Essay sulloution of pollution​

Answer»

ANSWER:

The population of the world is increasing DAY by day because of an increase in birth rate and decrease in the DEATH rate. The increase in population has become the main reason behind the LACK of education oppertunities,lack of job opportunities,lack of place to live, lack of basic amenities and etc.(introduction)

Explanation:

in the body you can talk about the migration and urbanization.

In CONCLUSION you may write about how to cure the lack of basic amenities and etc.

2.

A car starting from rest travels 100 m in5s with uniform acceleration. Find the accel-eration of the car.​

Answer»

ANSWER:

a = 8

Explanation:

s = ut + 1/2 a t^2

u = 0 (since starts from rest)

s = 1/2 a t^2

100 = 1/2 a (5)^2

a = 8

3.

The resultant of two forces 10 N and 15 Nacting along +.x and -x-axes respectively,is(A) 25 N along + x-axis(B) 25 N along - x-axis(C) 5 N along + x-axis(D) 5 N along - T-axismartors to be equal, they should​

Answer»

Answer:

resultant force=10 i cap-15 i cap

=-5 i cap

5 N ALONG -X AXIS

4.

What is pollination and types? ❤️❤️❤️❤️❤️

Answer»

\huge\underline\mathfrak\pink{Pollination}

→ The transfer of pollen grains from the anther to the stigma is CALLED pollination.

It is of TWO types :

Self pollination : The transfer poem grains from the anther of flower to the stigma of same flower or of another flower born on same PLANT is called self pollination.

CROSS pollination : The transfer of pollen grains from one plant to the stigma of flower of another plant is called cross pollination.

__________________________!! ❤️"

5.

बिधुत चुम्बक बल का विभव निकाले​

Answer»

ANSWER:

चुम्बक (मैग्नेट्) वह पदार्थ या वस्तु है जो चुम्बकीय क्षेत्र उत्पन्न करता है। चुम्बकीय क्षेत्र अदृश्य होता है और चुम्बक का प्रमुख गुण - आस-पास की चुम्बकीय पदार्थों को अपनी ओर खींचने एवं दूसरे चुम्बकों को आकर्षित या प्रतिकर्षित करने का गुण, इसी के कारण होता है।

6.

If a cross b is equal to b cross a find angle between a and b​

Answer»

ANSWER:

the ANGLE between them is ZERO degree

Explanation:

so as to have SINA = 0

7.

an object of mass one kg placed on the earth. Calculate the magnitude of the gravitational force on the object exerted bby the earth. Given mass of the earth Me=6. 0×10^24 kg and radius of the earth Re=6. 4×10^6m.

Answer»

This is your answer.I HOPE its HELP U.

8.

A particle of mass M moves with constant speed V on a circular path of radius R find magnitude of average force on it in half revolution​

Answer»

ANSWER:mv2/r

Explanation:AIR is moving in circular MOTION centrifugal FORCES act on it so it is mv2/r

9.

Tell me about the power and energy of electric current​

Answer»

Answer:

ELECTRIC power is the rate,per unit TIME at which electrical energy is transferred by an electric circuit. The SI unit of power is the watt, one joule per second. electric power is produced by electric GENERATORS but can ALSO be supplied by SOURCES such as electric batteries

10.

Definition of pollination and its two types?

Answer»

\huge\underline\mathfrak\pink{Pollination}

→ The transfer of pollen grains from the anther to the stigma is CALLED pollination.

It is of two types :

Self pollination : The transfer POEM grains from the anther of flower to the stigma of same flower or of ANOTHER flower born on same PLANT is called self pollination.

CROSS pollination : The transfer of pollen grains from one plant to the stigma of flower of another plant is called cross pollination.

__________________________!! ❤️"

11.

How much pressure is applied on a girl of 40 kg if she is standing on both Feet and area umder one feet is 8cm square?i will give brainlist to first answer..​

Answer»

Answer:

PRESSURE = force/area

force = 40kg

         =[40*10]N

         =400N

area = 8cm = 8/100*100 METRE square = 0.0008 metre square

pressure = 400/0.0008 pascal

               =4000000/8 pascal

               =500000 pascal

12.

a man crosses a river in a Boat. if he crosses the river in minimum time he takes 10 min with the drift of 120 m . if he crosses the river taking the shortest path ,he takes 12.5 min then find width of the river​

Answer»

Explanation:

Width = d

Man = V

River = v

In minimum time, he goes perpendicular to the river.

d/V = 10 min------(1)

v x 10 min = 120 m, so v = 12 m /min

In minimum distance, the resultant of the velocities is perpendicular to river

If he is at ANGLE x with the perpendicular

V sinx = v = 12-----(2)

V COSX = d / 12.5-----(3)

SQUARING and adding (2) and (3)

2V^2 = 144 + d^2 / 156.25 -----(4)

Putting VALUE of V from (1) in (4),

d^2 /50 = 144 + d^2 /156.25

d^2 = 10500 m

d = 100m

There could be some calculation error, but the method is correct.

13.

when we drop two balls at same time,one of rubber and another one of steel of same height and mass .which ball will bounce at greater height??​

Answer»

ANSWER:

the ball made of RUBBER will bounce at GREATER HEIGHT.

14.

A Rocket is moving up with velocity v. if the velocity of the rocket is tripled, what will be the ratio of kinetic energies?​

Answer»

let mass be M

original VELOCITY = V

new velocity = 3V

original KE = 1/2 x M x V^2

New KE = 1/2 x M x(3 V)^2

ratio

= original KE / New KE

= (1/2 x M x V^2)/(1/2 x M x (3V)^2)

= V^2 / 9 V^2

=1/9

Hope it HELPS

15.

-) A car travels at a speed of 50 km/hr for 30minutes, at 30 km/hr for next 15 minutesand then 70 km/hr for next 45 minutes.What is the average speed of the car?​

Answer»

ANSWER:

T = 30+15+75 = 120

D = 50+30+70 = 150

Answer = 150/120

= 5/4

EXPLANATION:

FORMULA of SPEED = d

t

16.

Pollination and its two types? ❤️❤️

Answer»

❤️❤️✌️✌️❤️❤️

➡️➡️ Defination : The transfer of POLLEN grains from the anther of male FLOWER to the stigma of the FEMALE flower for FERTILIZATION is called pollination.✔️

➡️➡️The two types of pollution are self pollination and CROSS pollination.

✔️✔️Self pollination occurs in same flower.

✔️✔️Cross pollination occurs between two flowers.

❤️✌️Follow me✌️❤️

17.

Tell me about potential difference of current​

Answer»

ANSWER:

CURRENT vs potential difference: **The current is a flow of charge. Current is measured through a COMPONENT. Potential difference is the energy used between two points in a CIRCUIT, therefore it is measured between two points either side of a component.

18.

Explain Acceleration due to gravity.??Don't spam ​

Answer»

ANSWER:

ACCELERATION due to gravity is the acceleration caused by the earth TOWARDS its centre

it is basically 9.8 METRE per second SQUARE on Earth

19.

What is pollination and it's types? Only define ❤️

Answer»

\huge\underline\mathfrak\pink{Pollination}

→ The transfer of pollen grains from the anther to the stigma is called pollination.

It is of two types :

Self pollination : The transfer POEM grains from the anther of flower to the stigma of same flower or of ANOTHER flower born on same PLANT is called self pollination.

CROSS pollination : The transfer of pollen grains from one plant to the stigma of flower of another plant is called cross pollination.

__________________________!! ❤️"

20.

CHEMICAL FORMULA of HYDROCHLORIC acid ​

Answer»

ANSWER:

CHEMICAL FORMULA of HYDROCHLORIC ACID is HCL

21.

A body of mass m starting from rest from originmoves along X-axis with constant power (P).Calculate relation between velocity/distance :-(1) x oc v1/2(2) x x v²(3) xx v(4) x x​

Answer»

ANSWER:

yeah

can you GIVE PHOTO of QUESTION?

22.

Pollination? Cross pollination? Self pollination? Define all ❤️

Answer»

\huge\underline\mathfrak\pink{Pollination}

→ The TRANSFER of pollen grains from the anther to the STIGMA is called pollination.

It is of TWO types :

SELF pollination : The transfer poem grains from the anther of flower to the stigma of same flower or of ANOTHER flower born on same plant is called self pollination.

Cross pollination : The transfer of pollen grains from one plant to the stigma of flower of another plant is called cross pollination.

__________________________❤️"

23.

Two uniform rods of mass m and length l form across moment of inertia of cross about an axisparallel to Cd passing through A is​

Answer»

Answer:

5/12ML^2.

Explanation:

We get that the TWO rods are making a cross hence the moment of inertia of the two rods will pass together through the center and the equivalent moment of inertia will be of the figure of cross.

Since, for the vertical rod the moment of inertia is at the half length or M(L/2)^2 or ML^2/4. For the horizontal rod the moment of inertia is ML^2/12 + M(L/2)^2 which on SOLVING we will get the moment of inertia to be ML^2/6.

Hence, the moment of inertia about an AXIS parallel to the other rod will be summation of the two inertia = ML^2/6 + ML^2/4 which on solving we will get that 5/12ML^2.

24.

Please answer the following question in the attachment with proper solutionI will mark it as brainliest

Answer»

EXPLANATION:

SINCE motion is uniform CIRCULAR motion thus v = constant

For equal velocity :-

ΔV = 2vsin (Φ/2).........(1)

angular displacement = 2π/3

Φ = 2*180/3

=120°

putting the value of Φ in eq.1

Δv = 2vsin(120°/2)

= 2vsin60°

=2v3/2

= v3

So change in velocity is v3 m/s

25.

Off the particle is moving along a straight linegiven by the relation x = 2 - 3t +4t? where s isin cms., and t in sec. Its average velocityduring the third sec ishis​

Answer»

Bonjour!

ACCORDING to the question

A particle is moving along a straight LINE given by the relation;

s = 2 - 3t + 4t³

Now, we have to find the average velocity, for this we will differentiate s with respect to t;

After differentiating ds/dt we get 6t² - 3

Now, we have to find average speed at t = 3 sec

So, we will put the value in ds/dt;

=> 6t² - 3 = 6(3)² - 3

=> 6 × 9 - 3

=> 54 - 3

=> 51

So, average speed at t = 3 is 51 m/s

Hope this helps...:)

26.

a particle in a certain conservative force field has a potential energy given by U=20xy/z the force exerted on it is​

Answer»

a particle in a certain CONSERVATIVE FORCE field has a potential energy given by U=20XY/z the force exerted on it is...

solution : concept : rate of change of potential energy of an OBJECT with respect to its position gives force APPLIED on that object.

i.e., F = dU/dr

here it is given that, U = 20xy/z

from partial derivatives ,

F = dU/dx i + dU/dy j + dU/dz k

dU/dx = (20y/z) dx/dx = (20y/z)

dU/dy = (20x/z) dy/dy = (20x/z)

dU/dz = (20xy) d(1/z)/dz = -(20xy/z²)

hence, F = (20y/z) i + (20x/z) j - (20xy/z²) k

27.

Pollination and types? Define! ❤️

Answer»

\huge\underline\mathfrak\pink{Pollination}

→ The transfer of POLLEN grains from the ANTHER to the STIGMA is called pollination.

It is of two types :

Self pollination : The transfer poem grains from the anther of FLOWER to the stigma of same flower or of another flower born on same plant is called self pollination.

Cross pollination : The transfer of pollen grains from one plant to the stigma of flower of another plant is called cross pollination.

__________________________❤️"

28.

A balloon starts rising from he ground with an acceleration of 2m/s^2 after 5 seconds a stone is released from the balloon. find the time taken by the stone to reach the ground after its release and total height attained by balloon when stone reaches the ground. (g=10m/sec^2)Original answers please!!!!!!!!

Answer»

ANSWER:

BALLOON

u=0 a=2 t=5

h= UT +1/2at^2

0 + 1/2 × 2×5×5

h= 25 m

STONE

u=0 h=25 g=10

h = ut + 1/2 gt^2

25= 0 + 1/2× 10 × t^2

t^2 = 25×2/10

t = root 5

29.

What is pollination and types? Any two?

Answer»

\huge\underline\mathfrak\pink{Pollination}

→ The transfer of pollen grains from the anther to the stigma is CALLED pollination.

It is of two types :

SELF pollination : The transfer poem grains from the anther of FLOWER to the stigma of same flower or of another flower born on same PLANT is called self pollination.

Cross pollination : The transfer of pollen grains from ONE plant to the stigma of flower of another plant is called cross pollination.

__________________________!! ❤️"

30.

a body is thrown with a velocity 29.3 the distance traveled in last but 1 second of upward motion is​

Answer»

Not UNDERSTANDING PLZ

31.

. Name the device that converts-(a) Chemical energy into electrical energy(b) Mechanical energy into electrical energy.​

Answer»

EXPLANATION:

CHEMICAL CELL and MOTOR

32.

4.A particle moves from A to B such thatx=t: +t-3. Its average velocity from t = 2sto t= 5s is(a) 6 ms-(b) 8 ms(c) 8.5 ms?(d) 7 ms-1​

Answer»

ANSWER:

........................

33.

a wire of resistance 20ohm is drawn in the form of a square. find net resistance across its one side and diagonal​

Answer»

Answer:

Net resistance across one side is 3.75 Ohms.

Net resistance across DIAGONAL is 5 Ohms.

Explanation:

check ATTACHED IMAGE.

34.

hypothetically if the diameter of the earth becomes half of the present value and the mass becomes four times its present value the now is the weight of the object on the surface of the earth be affected​

Answer»

Answer:

16 times the weight

Explanation:

reduction of the diameter to HALF will MAKE the weight of the object FOUR times the original and increase of mass to four times the original will also make the weight four times the original. on COMBINATION of both , weight will become 4*4 =16 times the original

35.

Define pollination, self pollination and cross pollination! Thanks (^^)

Answer»

\huge\underline\mathfrak\pink{Pollination}

→ The transfer of POLLEN grains from the anther to the stigma is called pollination.

It is of TWO types :

  • Self pollination : The transfer poem grains from the anther of flower to the stigma of same flower or of another flower born on same plant is called self pollination.
  • CROSS pollination : The transfer of pollen grains from ONE plant to the stigma of flower of another plant is called cross pollination.

__________________________!!

36.

Plzz tell me what is ellipse graph​

Answer»

Answer:

An ellipse is a SET of points on a plane, creating an oval, curved shape, such that the sum of the distances from any POINT on the curve to two FIXED points (the foci) is a CONSTANT (always the same). ... The endpoints of the major axis are on the ellipse and are CALLED vertices.

37.

A circular disc of radius 0.1 m and mass 1 kg is rotating at the rate of 10 rps about its axis . Find the work that must be done to increase the rate of revolution to 20 rps

Answer»

Answer:

EXPLANATION as the OBJECT is moving in circular PATH PE is 0

So TE= KE

KE (1)=1/2*1*10*10

=50J

KE (2)=1/2*1*20*20

=200J

Therefore,work done =200-50=150J

38.

Please answer question no. 40

Answer»

Answer:

60 METRE PER second

It's CORRECT

39.

Does anyone want motion institute video lectures at 100 rs per faculty​

Answer»

ANSWER:

{\huge {\underline{\boxed {\tt{\pink{Hello\: mate}}}}}}

YES

❤MARK MY ANSWER AS BRAINLIEST IF IT HELPS❤ AND FOLLOW ME FOR MORE HELP.... ❤

40.

calculate the recoil velocity of a gun of mass 5kg's that fires a bullet of 20 grams with a velocity of 150m/s​

Answer»

ANSWER:

\displaystyle{0.6 m/sec}

EXPLANATION:

Given :

Mass of  bullet ( m ) = 20 g  

Mass of  bullet ( m ) = 20 / 1000 kg => 1 / 50 kg

Mass of gun ( M )  = 5 kg

Velocity of bullet ( v )  = 150 m / sec

Let recoil velocity of a gun = V m / sec

From linear conversation of we know

\displaystyle{m_1v_1=m_2v_2}

Here

M × V = m × v

putting values we get

5 kg × V  = 1 / 50 kg × 150

5 V =  3

V = 3 / 5 m / sec

V = 0.6 m / sec

Thus  recoil velocity of a gun is 0.6 m / sec .

41.

Is it neccesary to sole irodov for jee advnaced?

Answer»

I think...it is not REQUIRED but if u WANT to PRACTICE then solve it....

42.

What do u UNDERSTAND by speed and its formula​

Answer»

SPEED is the DISTANCE traveled PER unit of time. It is how fast an object is moving. Speed is the scalar QUANTITY that is the MAGNITUDE of the velocity vector. ... Lower speed means it is moving slower.

mark as brainliest!

43.

A ball is thrown vertically upwards from *a tower* with a velocity of 19.6 m/s it takes 5 seconds to hit the ground calculate the height of the tower and the velocity with which the ball will hit the ground​

Answer»

The ball is thrown upwards with velocity 19.6 m/s. During the upward motion it experiences -9.8 m/s² acceleration due to which it comes to rest momentarily at the highest point in air. We can calculate the time taken to reach the heighest point.

v = u + at

0 = 19.6 - 9.8 t

t = 2 SEC

So the ball reaches the topmost point in air in 2 seconds.

DISTANCE TRAVELLED by the ball until it reaches the highest point :

s = ut + at²/2 = 19.6 ×2 + 9.8 × 2²/2

s = 19.6×2 + 19.6 = 19.6×3 = 58.8 m

Hence the ball travels 58.8 m above the

height of tower after THROWING.

Now the ball comes down and experiences an acceleration of +9.8 m/s². The time in which it reaches down from the highest point is 4 sec (6-2) because 2 sec is consumed in reaching the highest point.

Now let us calculate the distance travelled by the ball to reach the earth in 4 sec.

s = ut + at²/2

s = 0×t +9.8× 4²/2

s = 9.8× 8 m

This distance ALSO includes the distance from the throwing point to the highest point, ie 58.8m. So we need to subtract that distance from this calculated distance of 9.8×8 m.

So height of tower = 9.8× 8 - 58.8

= 9.8×8 - 9.8×3

= 9.8×5

= 49 m.

Hence height of the tower is 49m

44.

calculate the mass of the body moving with a velocity of 22.5m/s is brought to rest in 5seconds by applying a force of 100newtons​

Answer»

ANSWER:

acceleration=-4.5

force=100

mass=100/4.5

=22.2kg(APPROX)

45.

Which phenomena can be satisfactorilyexplained using ray opties? State theassumptions on which ray optics is based​

Answer»

Ray optics.

Explanation:

Using ray diagram, the phenomena of REFLECTION and refraction of light is explained. The bouncing BACK of light is called reflection while the bending of light when it reaches the boundary is called refraction of light.

Assumptions on which ray optics is BASED are :

1. The light travels in a straight line as they travel in a homogeneous medium.

2. The light rays BEND and sometimes it splits into two PATHS.

3. The light rays follow curved paths in a medium in which the refractive index changes.

Learn more,

Ray optics

brainly.in/question/12862325

46.

The acceleration-time graph of a particle moving ina straight line along x-axis is given below. If initialvelocity of the particle is 4 m/s, then velocity att = 2 s ispa (m/s)1 +...t(s)​

Answer»

ANSWER:

jajansjskd

Explanation:

ZJAJSJJSJSUSUSJSJSJXUSUDHEHXHSBDNSJXJSJXIS X

47.

An object falls from a bridge that was 45mabove the water. In water a small row boatwas moving with velocity u and was at adistance 13.5m from the point of impact when objectwas released. At the instant when the objectreleased if the boat start accelerating at 1 m/s2,so that if falls directly into the small rowboat then in the initial velocity u' of boat(g=10m/s)​

Answer»

Answer:

The boat was moving with an initial velocity u' of 3m/s

Explanation:

Let The initial velocity of the boat be u'

Now let stone fall in time t sec with ACCELERATION of 10m/s^2

So by Second equation of motion we get

Height of bridge = 45

S = u*t + 1/2 g*t^2

45 = 0*t + 1/2 10*t^2

45 = 5t^2

9 = t^2

So, t = 3sec

Now,

Boat  is 13.5 m AWAY  s= 13.5m

a = 1m/s^2

t= 3sec

u = ?

We know by second Equaton of motion

S = u*t + 1/2*a*t^2

13.5 = u*3 + 1/2 *1 * 3^2          (9)

13.5 = u*3 + 9/2

13.5 - 4.5 = u*3

9 = u*3

u = 3m/s

******* Please Mark Brainliest ******************

48.

Difference between mesh and nodal analysis​

Answer»

Answer:

Kirchhoff current law states that the algebraic sum of all currents entering a NODE of a CIRCUIT is ALWAYS zero. Loop/mesh and nodal analysis are methods of analysis that are used to find the UNKNOWN (voltage or current) in a circuit. Mesh analysis uses KVL to establish the equations for current.

49.

Angles of deviation for extreme coloursare given for different prisms. Select theone having maximum dispersive powerof its material.(A) 7°, 10° (B) 8°, 11°(C) 12°, 16° (D) 10°, 14°​

Answer»

ANSWER:

Option (a) 7°, 10°

Step-by-step explanation:

DISPERSIVE power of a medium is given by

\boxed{\omega=\frac{\delta_F-\delta_C}{\delta_D}}

where, \delta_F and  \delta_C are the angles of deviation for the blue and RED colours RESPECTIVELY. Also called the difference in the angles of deviation of extreme colours.

\delta_D is the deviation for the yellow colour or mean deviation which is the average of the extreme deviations

Thus, where the difference in \delta_F and  \delta_C divided by the mean deviation is most, will have the MAXIMUM dispersive power

In Option (a) the value of ω = 3/8.5 = 0.35

In Option (b) the value of ω = 3/9.5 = 0.32

In Option (c) the value of ω = 4/14 = 0.29

In Option (d) the value of ω = 4/12 = 0.33

Therefore the maximum dispersive power is that of the values given in Option (a)

Hope this helps.

50.

Definition of unit vector​

Answer»

vector MEANS object having both things

direction and magnitude.

m

magnitude means have some and LARGE AMOUNT of volume

i think answer is helpfull to u and OTHERS

make it up to