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 SI unit of magnetic charge?

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Magnetic charge” (i.e. the magnetic counterpart of electric charge) is actually calledpole strength. In SI units, the units depend on how pole strength is defined. If defined as the force per unitBfield, the SI units are ampere-meter^2(A m^2). If defined as the force per unitHfield, the SI units are webers (Wb).

In CGS Gaussian units, theBandHfields have the same units, and pole strength has units ofunit poles.

2.

as How many lites of water flows out of a pipe having an area of crosssection5crninI mioute. if the speed of water in the pipe is 30 cm's?

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3.

A-8-760, p are roots of x2-px + q+ (r + 4-q)"-4p2.0and α-2, β + 2 are roots of X2-px+r:0,then provetrat4-9. I

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4.

it nto ourIn Fig 9.24, ABC and ABD are two triangles onthe same base AB.If linesegment CD is bisectedby AB at O, show that ar(ABC)" ar (ABD).

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5.

ind thewith the same radiu

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Circumference of circle = 2 × π × r =>2 × 22/7 × 154/10=>(2×22×154)/7×10=>96.8cm

Hence

Circumference of circle = 96.8cm

Now

perimeter of two semicircle = 2 × perimeter of semi circle

=>2×perimeter of semi circle =>2× (π ×r)=>2×22/7×154/10=>96.8cm

6.

够t3TH

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243.80+ 60.00+ 8.28=312.08- 14.00=298.08

7.

() plx)=x+5

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a zero of a polynomial is a value of x which makes P(x)=0

so, for P(x)=x+5, you find the zero00s by setting equal to zero and solving for x:

0=x+5

x=-5

P(-5) = (-5)+5 = 0.

this is a polynomial of the power 1which has one zero that is x=-5if we put it in the equation our polynomial will be 0

okay

8.

0 सरूण० + नस छीT3

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9.

17. Find the valus of a and bi1. Two sides AB & BC and median AM of A ABC are respectively equal to sides PO & QRand median PN of POR. Show that Δ ABM,APONPage 2 of 4

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Given: AM is the median of ∆ABC & PN is the median of ∆PQR.

AB = PQ, BC = QR & AM = PN

To Show: (i) ΔABM ≅ ΔPQN(ii) ΔABC ≅ ΔPQR

Proof: Since AM & PN is the median of ∆ABC

(i)1/2 BC = BM & 1/2QR = QN (AM and PN are median) Now, BC = QR. (given)

⇒ 1/2 BC = 1/2QR (Divide both sides by 2) ⇒ BM = QN

In ΔABM and ΔPQN, AM = PN (Given) AB = PQ (Given) BM = QN (Proved above)

Therefore, ΔABM ≅ ΔPQN (by SSS congruence rule) ∠B = ∠Q (CPCT)

(ii)In ΔABC & ΔPQR,

AB = PQ (Given) ∠B = ∠Q(proved above in part i)BC = QR (Given) Therefore, ΔABC ≅ ΔPQR ( by SAS congruence rule)

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10.

(1) x=4 is the root of3x -5 =7

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put x = 4, 3×4 -5 -7 12 -12 = 0yes it is zero

thanks friend

11.

sum of two numbers is 3 apon 5 .If first number is 7 apon 20 .Find the other

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12.

Write any four axioms of euclid's.

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First Axiom: Things which are equal to the same thing are also equal to one another.

Second Axiom: If equals are added to equals, the whole are equal.

Third Axiom: If equals be subtracted from equals, the remainders are equal.

Fourth Axiom: Things which coincide with one another are equal to one another.

Fifth Axiom: The whole is greater than the part.

13.

a-15=25 and state which Euclid's axioms di you use here

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X - 15 = 25On adding 15 to both sides ,we havex- 15 + 15 = 25 + 15ie, x = 40 (using Euclid's second axiom)

14.

Find the values of k for which a root of quadratic equationx^2 - 2 (1+ 3k) x + 7 ( 3+2k) = 0 is 7

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15.

司m2(a)(c)7501500(b) 1250(d) 1600-

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thanks

16.

The length of a rectangular hall is 5 m more than its breadth. If thoof the hall is 750 m2 then its length isata

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17.

14. If sum of the squares of zeroes of the quadratic polynomial plx)t k is 40, find thevalue of k

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p (x)= x^2-8x+kp (x)=Ax^2+Bx+C(The equation is inthis form)

Let the zeroes be 'a' and 'b'

It is given that=> a^2+b^2=40=> (a+b)^2 - 2ab = 40 ----1

sum of zeroes=> a+b = -B/A = -(-8)/1 = 8

Product of zeroes => a*b = C/A = k

Substitute these values in the equation1 we get=> 8^2 - 2k = 40=> 64 - 2k = 40=> 2k = 24=> k = 12

18.

If 1 and 3 are the zeros of the polynomialplx) - 2x -7x-13x 63x-45, then find theremaining zeros of px).

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thank uu so much

19.

When a polynomial p(x) is drvided by 3x-1, the quotient and romainder anr + 2x-3 and 5 respectively Find plx)

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As given,Quotient = x^2 + 2x - 3,Remainder = 5

Then,p(x) = (x^2 + 2x - 3)*(3x - 1) + 5= 3x^3 - x^2 + 6x^2 - 2x - 9x + 3 + 5= 3x^3 + 5x^2 - 11x + 8

Therefore, p(x) = 3x^3 + 5x^2 - 11x + 8

20.

polynomialand themple s*" : Verify that 3, 1, - are the zeroes of the cubicPlx) -3t-5r- I1x-3, and then verify the relationship between the zeroes acoefficients.ith au' t hy'+ca + d, we get

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If 3, - 1, and - 1/3

Are zeros of polynomial 3x^3 - 5x^2 - 11x - 3

Polynomial is of form ax^3 + bx^2 + cx + d

Then, sum of zeros= 3 + (-1) + (-1/3) = 5/3= - b/a

Sum of product of pair of zeroes= 3*-1 + - 1*-1/3 + 3*-1/3= - 3 + 1/3 - 1= - 4 + 1/3 = - 11/3 = c/a

Product of zeroes= 3*-1*-1/3 = 1= - d/a

21.

ter of Venus pIdiame) the radius of each circle, given the circumference as Take T3radiugnd (a) the diameter, (b)1 2222 cm (8.8 m(i) 61.6 m7cm (ii) 8.8 mi) 61.6 mradii of two wheels is 3:4. What is the ratio of their circumferences ?

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Similarly, solve others

22.

Find the smallest number by which 5392 must be divided so that the quotient is a perfect square. Findthe square root of the quotient.

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23.

Find gain or loss per cent if(i)S.P = 750, C.P. = 600

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SP = 750CP = 600

Selling price is greater than cost price.ao there will be profit.

profit percentage = {(SP-CP)/CP} ×100

i.e., {(750-600)/600} ×100= (150/600)×100 =100/4 = 25%

therefore profit percentage is 25%

24.

2. Let α and β ate the zeroes of a quadratic polynomial 2x2-5x-6 then form aquadratic polynomial whose zeroes are α + β and αβ (CBSE 2011)

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25.

2. Let α and β ate the zeroes of a quadratic polynomial 2x2-5x-6 then form aquadratic polynomial whose zeroes are α + β and αβ (CBSE 2011)20

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26.

TRY THISCan you give any two axioms from your daily life.

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Q. 2

State examples of Euclid's axioms in our daily life.

Answer

Take the 5 Euclid’s axioms one by one –

Axiom 1: Things which are equal to the same thing are also equal to one another.

Example: Take a simple example.

Say, Raj, Megh, and Anand are school friends. Raj gets marks equal to Megh’s and Anand gets marks equal to Megh’s; so by the first axiom, Raj and Anand’s marks are also equal to one another.

Axiom 2: If equals are added to equals, the whole is equal.

Example: Say, Karan and Simran are artists and they buy the same set of paint consisting of 5 colors. This means, Karan has 5 color set and Simran to has same 5 color set.

⇒(Karan’s 5 colour set) = (Simran’s 5 colour set) …(i)

Now, they need the special set of 3 paint brushes each and so they buy it. This means Karan buys 3 paint brushes and Simran too buy the same kind of 3 paint brushes.

⇒(Karan’s 3 paint brushes) = (Simran’s 3 paint brushes) …(ii)

Add the two equals (i) and (ii), we get

(Karan’s 5 color set) + (Karan’s 3 paint brushes) = (Simran’s 5 colour set) + (Simran’s 3 paint brushes)

⇒Karan’s 8 paint items = Simran’s 8 paint items

This well proves that even after adding their equals, the whole were equal.

A

1. sun rises in East2.two parallel lines never meet each other

8Daily Life Examples Of Axioms

0 is a Natural Number. 0 is a natural number, which is accepted by allthepeople on earth. ...

Sun Rises InTheEast. ...

God is one. ...

TwoParallel Lines Never Intersect Each Other. ...

India is a Part of Asia. ...

Probability lies between 0 to 1. ...

TheEarth turns 360 DegreesEveryday. ...

All planets Revolve aroundtheSun.

1. sun rises in East2. two parallel lines never meet each other

27.

root 1 apon 7

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1/√7=1/2.645= 0.378

28.

Sum of zeros of the quadratic polynomial2x2 -5x+2 is:(a) 5(b) 1(d) - 12

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Sum of zeroes is -b/a=(5/2)hence option c

29.

yBlhomial30. Subtract 2x3-4x2+3x+s from 4x3+x+x+ 63ia3Trinomial 4) Biquadrati, then the resultentvalue is

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4x*x*x + x*x + x + 6 - ( 2x*x*x - 4x*x + 3x + 5 ) = 4x*x*x + x*x + x + 6 - 2x*x*x + 4x*x - 3x - 5 = 2x*x*x + 5x*x - 2x + 1

If you find this answer helpful then like it.

30.

Fifth root of 0.0076

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let x = (0.0076)1/5log x= log (0.0076)1/5=1/5 log ( 0.0076)

bar= 1/5 ( 3.8808)bar= 1.5762then antilogx= 0.3769...

31.

Find the fifth root of 0.0076

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32.

10.If a and ß are the zeroes of the quadratic polynomial 2x2 + 5x + 1, then find thevalue of a3 + aß3.

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answer is answeri..not asking me again

33.

2x2-5x + 7, find a polynomial whoseIfα and β are the zeros of the quadratic polynomialzeros are 2α + 3β and 3α + 2β21.(x)

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α² +β² can be written as (α +β)² - 2αβ

p(x) = 2x² - 5x + 7a = 2 , b =- 5 , c = 7

α andβ are the zeros of p(x)

we know that ,sum of zeros =α +β = -b/a = 5/2

product of zeros = c/a = 7/2

2α + 3β and 3α + 2β are zeros of a polynomial.

sum of zeros = 2α + 3β+ 3α + 2β = 5α + 5β = 5 [α +β] = 5× 5/2 = 25/2

product of zeros = (2α + 3β)(3α + 2β) = 2α [3α + 2β] + 3β [3α + 2β] = 6α² + 4αβ + 9αβ + 6β² = 6α² + 13αβ +6β² = 6 [α² +β² ] + 13αβ = 6 [ (α +β)² - 2αβ ] + 13αβ = 6 [ ( 5/2)² - 2× 7/2 ] + 13× 7/2 = 6 [ 25/4 - 7 ] + 91/2 = 6 [ 25/4 - 28/4 ] + 91/2 = 6 [ -3/4 ] + 91/2 = -18/4 + 91/2 = -9/2 + 91/2 = 82/2 = 41

-18/4 = -9/2 [ simplest form ]

a quadratic polynomial is given by:-

k { x² - (sum of zeros)x + (product of zeros) }

k {x² - 5/2x + 41}

k = 2

2 {x² - 5/2x + 41 ]

2x² - 5x + 82 -----> is the required polynomial

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34.

Find the fifth root of 0-0076.

Answer»

let x = (0.0076)1/5log x= log (0.0076)1/5=1/5 log ( 0.0076)

bar= 1/5 ( 3.8808)bar= 1.5762then antilogx= 0.3769...

35.

62. A batsman made an average of 40 runs in 4 innings,but in the fifth inning, he was out on zero. What isthe average after fifth inning?

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40 runs in 5 innings nowso 40/5 =8 runs

the correct answer is 8 runs

Average in 4 innings = 40Total runs in 4 innings =160 (40*4)Run in 5th inning= 0Total run after 5th inning= 160+0 = 160Average after 5th inning = 160/5 =32

36.

27. -5 is one of the zeroes of 2x2 px 15. Quadratic polynomialplx + x)+k has both the zeros equal to each other. Then find k.

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37.

Square root of5 4method7 56xt perutierSuchdivisrightont 23St suchTotient556 to

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The ‘square root’ of 54756 by long division method is shown in below attached image.

Hence, by dividing 54756 by 2 by long division method, we get the final answer as 234.

The ‘long division method’ is used dividing a “large number (three digits or more)” by a “two-digit (or more) number”. It is set out in a ‘similar way’ to ‘short division’.

38.

tncy work dione.1f460 is divided by a natural number, quotient is 6 more than five times the divisand remainder is 1. Find quotient gnd diviser

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Using Remainder theorem:

460 = Divisor x Quotient + Remainder

Let divisor be D, quotient be Q, and Remainder is given 1

So,

460 = Q.D + 1

Q.D = 459.....(1)

Now we have,

Q = 5D + 6....(2)

Solving (1) and (2) we get

Q = 459/D

Putting this in (2) we get

459/D = 5D + 6

459 = 5D² + 6D

5D² + 6D -459 = 0

5D² - 45D + 51D -459 = 0

5D(D - 9) + 51(D - 9) = 0

(5D + 51)(D - 9) = 0

D = 9 or -51/5

As it is given that divisor is natural number, D will only be 9

Divisor = 9

Quotient = 459/9 = 51

39.

The outer radius of a pipe is 12.5 cm and it is 21 m long. Find the cost of painting the outer surface at 750per m2

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thanks

40.

Find the total surface area of a cone of radius 2r and slant height2

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41.

If eλ and e-A are the roots ofequation 3x2-(a+b)x + 2a-0, a b, λ e R. λ#0 then least integralvalue of b is(A) 4Q.5(B) 5(C) 9(D) 10

Answer»

given eⁿ and e-ⁿ are the roots

so, according to the equation product of roots = 2a/3 => eⁿ * e-ⁿ = 2a/3 => 2a/3 = 1 => a = 3/2

sum of roots should be (a+b)/3 => (a+b)/3 = eⁿ +e-ⁿ=> (a+b) = 3( eⁿ +e-ⁿ)

also, the minimum +ve value of a function x+1/x = 2

so , (a+b) = 3*2 => b = 6-a = 9/2 ... the least intergral value is > 9/2. = 5

option B

42.

What is the total surface of a cone of radius 2r and siant height l/2

Answer»

Given, radius of the cone, R = 2r

Slant height of cone, L =l/2

Total surface area of cone =πR (L + R)

=π ×2r [ (l/ 2) + 2r ]

=π ×2r [ (l+ 4r) / 2 ]

=πr [l+ 4r ]

43.

Divide Q cato tuo Parts suchthat the surn of thec8,飞eLiPooca 122

Answer»

Let two parts be x and y

so x+y=27

A2q,

1/x+1/y=3/20

After putting x+y=27

y=180/x

putting y=180/x in eq x+y=27

x^2-27x+180

after solving

x=15 & 12.

44.

x3 +18x2+33r + 18, 3x +13x +10

Answer»

From which book have you taken this question? Please tell us so that we can provide you faster answer.

45.

10) Subtract 2x3+x2-4x+2 from x3-3x2+5x-1.

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x^3-3x^2+5x-1-(2x^3+x^2-4x+2)x^3-3x^2+5x-1-2x^3-x^2+4x-2-x^3-4x^2+9x-3

46.

P İS 12.yoars older than Q. Q is thr.(Qthe age of R. tha sum et agos the a9a

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2x = 78x = 39R = (39/3)+7R= 13 + 7R= 20 years

47.

CoNUERT NTO PROPER ERACT IONJ1*1/3

Answer»

1 1/33*1+1/3=3+1/3=4/3

48.

3. (i) Find the fifth root of 8.0125(ii) Find the fifth reot of 0-96(ii) Find the 7th root of 0-03457.

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i) 1.51618ii) 0.9918iii) 0.61836

49.

Solve.(1) If x = 4 is a root of x2-9x + k = 0, find the value of k andfind the other root.

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If 4 is the root we will put x= 4 in the equation 16-36+k= 0 now k = 20 so equation will be x^2-9x+20x^2-(5+4)x+20= 0!x(x-5)-4(x-5)= 0x= 5 and x= 4 are two rootsplease like the solution 👍 ✔️👍

50.

If one root of the quadratic polynomial 2x^2 -3x + P is 3find the other root. Also, find the value of P

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