43612 + Interview Questions in MATHEMATICS IN CLASS 10 Page 605 InterviewSolution

30201.	Why does a glass slab not disperse light?
Answer» After refraction at two parallel faces of a glass slab, a ray of light emerges in a direction parallel to the direction of incidence of white light. As rays of all colours emerge in the same direction, i.e., the direction of the incidence of white light, there is no dispersion. However, there is lateral displacement.

Discussion

30202.	Sin29/cosec61+2cot8cot17cot45cot73cot82-3(sinsin38+sin*sin52)
Answer»

Discussion

30203.	Find the area of rhombus if its vertices taken in order are (3,0),(4,5),(-1,4) and(-2,-1)
Answer» Try it by using distance formula and then apply area of rhombus formula

Discussion

30204.	Ananya tumjara kon kon sa subject complete ho gaya hai???
Answer» Nahi nahi yahi par hoon Fir se gye?? Pucho mt

Discussion

30205.	X2+x2=67
Answer» X= root under 67/2

Discussion

30206.	Why does a glass slab not disperse light whereas a prism does?
Answer»

Discussion

30207.	X^2-[√3+1]x+√3=0
Answer» X^2+X-√3X+√3=0X(X+1)+√3(X+1)=0(X+1)(X+√3)=0If X+1=0. It\'s+√3=0THEN. X=-1. THEN. X=-√3

Discussion

30208.	prove phythagoras theorem
Answer»

Discussion

30209.	If a≠b≠c,then prove that the points (a,a×a),(b,b×b), (c,c×c) can never be collinear.
Answer» Let A(a, a2), B(b, b2) and C(c, c2) be the given points.{tex}\\therefore{/tex}Area of\xa0{tex}\\Delta A B C{/tex}{tex}= \\frac { 1 } { 2 } \\left\\{ a \\left( b ^ { 2 } - c ^ { 2 } \\right) + b \\left( c ^ { 2 } - a ^ { 2 } \\right) + c \\left( a ^ { 2 } - b ^ { 2 } \\right) \\right\\}{/tex}{tex}= \\frac { 1 } { 2 } \\left\\{ a b ^ { 2 } - a c ^ { 2 } + b c ^ { 2 } - b a ^ { 2 } + c a ^ { 2 } - c b ^ { 2 } \\right\\}{/tex}{tex}= \\frac { 1 } { 2 } \\times 0{/tex} [if a = b = c]=0i.e., the points are collinear if a = b = cHence, the points can never be collinear if\xa0{tex}a \\neq b \\neq c.{/tex}

Discussion

30210.	Value of 22/7
Answer» 3.14

Discussion

30211.	Find the sum of all three digits numbers, which leaves the remainder 3 when divided by 7.
Answer»

Discussion

30212.	Difference between centre and center?
Answer» Spelling ka Great question,??????????????

Discussion

30213.	Find the coordinates of the point on y- axis which is nearest to the point (-2,5)
Answer» The point on y-axis that is nearest to the point(-2,5) is (0,5).

Discussion

30214.	????2019 mai half syllabus ho raha ha
Answer» Yaa she is right Shi kha joke hai But hamara kya.......? ? Yes kash 2018 mai ho jata???? Shi me No it\'s correct Yeh toh wrong hai Yess You are right ? What a joke☺☺

Discussion

30215.	If the area of the surface of a sphere is 32 pie cm sq. , find the diameter of sphere?
Answer» 4 root 2

Discussion

30216.	Hllo....guys.!!!
Answer» Hy... [email\xa0protected] Hii ananya Hi teinkle Hii Hlw Hi Byee Hiii Hiiiiii

Discussion

30217.	Anjali ...
Answer» Hii Stupid Ye shyad joke kr rha h ???haa she is no more online. ???? Luv what are you saying Kya? ???????? Whatt angali is no more. ???

Discussion

30218.	Is there anyone from JNV here?
Answer» Oh my god.JNV means Jawahar Navodaya Vidyalaya. Jnv means

Discussion

30219.	?k pado ho yaro
Answer» Kuch na JE tu padhe se wahi hum bhi padhe se

Discussion

30220.	Hiiii tanya
Answer» Nops Aba kisi ki aukat nahi ki mujha ek chata da da samjhi ananya singh Ek chata dedo ,shant ho jayega?? Puri message ma dakh lo shirf tum sa phone number manga tha Biswas karo Sahi bol raha hu ananya Jhuut Mai sabsa nahi shirf tum sa manga tha Aap sbse phone no hi maange jaa rhe h ku??

Discussion

30221.	Any body free
Answer» Koi hae mujse baat kar sakta hoon Guys don\'t fight ?it\'s only a joke Ya bcoz u don\'t afford mr I m not trying to buy u ?✌ No I am costly Yes Yep Hiiii...

Discussion

30222.	Kaise marks sbko lgte h ki unke itne aayenge?
Answer» 90% 97 percent 000000 99.9 Mera too 95 or96/ percent

Discussion

30223.	i m not able to understand statistics
Answer» No Vbcf can u explain me See online lecture from this ap0 What to do so easy

Discussion

30224.	Aanaya tell me near by city\'
Answer» Ab aap batao

Discussion

30225.	Prove under the root 7 irrational
Answer» Let us assume that √7\xa0is rational.That is, we can find integers a and b (≠0) such that\xa0a and b are co-prime{tex}\\style{font-family:Arial}{\\begin{array}{l}\\sqrt7=\\frac ab\\\\b\\sqrt7=a\\\\on\\;squaring\\;both\\;sides\\;we\\;get\\\\7b^2=a^2\\end{array}}{/tex}Therefore, a2 is divisible by 7,\xa0it follows that a is also divisible by 7.So, we can write a = 7c for some integer c.Substituting for a, we get 7b2 = 49c2, that is, b\u200b\u200b\u200b\u200b\u200b\u200b2\xa0= 7c2This means that b2 is divisible by 7, and so b is also divisible by 7\xa0Therefore, a and b have at least 7\xa0as a common factor.But this contradicts the fact that a and b are co-prime.This contradiction has arisen because of our incorrect assumption that √7\xa0is rational.So, we conclude that √7\xa0is irrational.

Discussion

30226.	Prove that √7 is irrational
Answer» Let us assume that √7 be rationalThen it must in the form of p/q (q#0) { p and q are co-prime } √7=p/q=> √7 × q=pQuiring on both sides=> 7q2 = p2 ------->(1)p2 is divisible by 7 p is divisible by 7p=7c (c is a positive integer) (squaring on both side)p2=49c2--------> (2) substitute p2 in equipment (1) we get7q2=49c2=>q is divisible by 7Thus q and p have a common factor 7there is a contradictionas our assumption p&q are co-prime but it has a common factorSo that √7 is an irrational.

Discussion

30227.	Here, anybody from punjab. ....?
Answer» Punjabi hu but abhi delhi me raheti hu Nooo No

Discussion

30228.	7/77 is a terminating or non terminating reapting
Answer»

Discussion

30229.	D G bro.... What u r
Answer» Deepanshi and g is secret Form" D G full forn Ok Not bro sis bolo

Discussion

30230.	What is area of segment
Answer» Hello my name copier

Discussion

30231.	TanA=n tanB and SinA=m sinB prove that cos×cosA=m×m-1
Answer» Given,\xa0tan A = n tan B{tex} \\Rightarrow{/tex} tanB = {tex}\\frac{1}{n}{/tex}tan A{tex}\\Rightarrow{/tex}\xa0cotB =\xa0{tex}\\frac { n } { \\tan A }{/tex}..........(1)Also given,\xa0sin A = m sin B{tex}\\Rightarrow{/tex}\xa0sin B =\xa0{tex}\\frac{1}{m}{/tex}sin A{tex}\\Rightarrow{/tex}\xa0cosec B =\xa0{tex}\\frac { m } { \\sin A }{/tex}.....(2)We know that, cosec2B - cot2B = 1, hence from (1) & (2) :-{tex} \\quad \\frac { m ^ { 2 } } { \\sin ^ { 2 } A } - \\frac { n ^ { 2 } } { \\tan ^ { 2 } A } = 1{/tex}{tex}\\Rightarrow \\quad \\frac { m ^ { 2 } } { \\sin ^ { 2 } A } - \\frac { n ^ { 2 } \\cos ^ { 2 } A } { \\sin ^ { 2 } A } = 1{/tex}{tex}\\Rightarrow \\quad \\frac { m ^ { 2 } - n ^ { 2 } \\cos ^ { 2 } A } { \\sin ^ { 2 } A } = 1{/tex}{tex}\\Rightarrow{/tex}\xa0m2 - n2cos2A = sin2A{tex}\\Rightarrow{/tex}\xa0m2 - n2cos2A = 1 - cos2A{tex}\\Rightarrow{/tex}\xa0m2 - 1 = n2cos2A - cos2A{tex}\\Rightarrow{/tex}\xa0m2 - 1 = (n2 - 1) cos2A{tex}\\Rightarrow \\quad \\frac { m ^ { 2 } - 1 } { n ^ { 2 } - 1 } ={/tex}\xa0cos2A

Discussion

30232.	Hey D G... What is ur price? ? Rupee 1or 2
Answer» Dollar? Not in rupee bro Cost 0 no pain no gain ?????

Discussion

30233.	Triangle how many side
Answer» This is very tough question ....Prepare for exam even asked by chance..?? 3 Teen

Discussion

30234.	So you all are ready for board exams??
Answer» Guys i many problem in s.s.t plz someone hlp mee plz? Meri SST rh gyi h Almost ho gayi hai Ok so yor all subjects are completed All but almost sst

Discussion

30235.	Prove that .root 3 is irrational number
Answer» Let us assume that √3 is rational.That is, we can find integers a and b (≠0) such that\xa0a and b are co-prime{tex}\\style{font-family:Arial}{\\begin{array}{l}\\sqrt3=\\frac ab\\\\b\\sqrt3=a\\\\on\\;squaring\\;both\\;sides\\;we\\;get\\\\3b^2=a^2\\end{array}}{/tex}Therefore, a2 is divisible by 3,\xa0it follows that a is also divisible by 3.So, we can write a = 3c for some integer c.Substituting for a, we get 3b2 = 9c2, that is, b\u200b\u200b\u200b\u200b\u200b\u200b2\xa0= 3c2This means that b2 is divisible by 3, and so b is also divisible by 3\xa0Therefore, a and b have at least 3 as a common factor.But this contradicts the fact that a and b are co-prime.This contradiction has arisen because of our incorrect assumption that √3 is rational.So, we conclude that √3 is irrational.

Discussion

30236.	I need a help
Answer» Science best hai?PCB What Hn bolo Plz tell wht should I take in 11

Discussion

30237.	If area of the hexagon is24√3cmsqaure find its perimeter
Answer» 24

Discussion

30238.	The decimal expansion of number 43
Answer» ????

Discussion

30239.	I new in 10 class
Answer» Ohoooo thanx Hl9oo...wlcm Yes mere 9 k exam over hue h 24 ko result tha Sab ek baar hi aate h Hi Oh really ???

Discussion

30240.	Formula of volume surface area
Answer» Volume of what? Kiska Hii U can check in ncert

Discussion

30241.	Prove that: sec²A - 5tan²A = 5 + 4sec²A
Answer»

Discussion

30242.	Write the rational numbers between √2 and √3
Answer»

Discussion

30243.	( 3 raise to the power x minus 1) - 2 power x is equal to 11
Answer» x=04

Discussion

30244.	Arrre kis kis ko dar lag raha hai 10 class board se???
Answer» Shi kha friends... Bhai darna nhi h confidence se paper do Kaisa dar just chill guys Kyu* Ab ye bol k kya fayada.Board toh Dena hi h Kyi darna ????? Me

Discussion

30245.	Hey there
Answer» There online Hii..where Hii

Discussion

30246.	tan A/SecA-1+ tanA/ sec A+1=2cosecA
Answer» Ho jayega it\'s easy

Discussion

30247.	In a ∆ABC,
Answer» Complete the question

Discussion

30248.	Yaro ke yaar
Answer» Krish jain I mean aapka name kya hai Aapki tarif???? Hlo ????? ???? Oooh..mil gayi...?? Areeeee riya yha hu mai?? sorry app kon?? ARU???

Discussion

30249.	Hii friends how r u
Answer» Good Hiii Good Good

Discussion

30250.	Is completing the square in Maths subject is important
Answer» yes it is important Some way Some whay Hmm,,, No I don\'t think so

Discussion

Explore topic-wise InterviewSolutions in .

Why does a glass slab not disperse light?

Sin29/cosec61+2*cot8cot17cot45cot73cot82-3(sin*sin38+sin*sin52)

Find the area of rhombus if its vertices taken in order are (3,0),(4,5),(-1,4) and(-2,-1)

Ananya tumjara kon kon sa subject complete ho gaya hai???

X2+x2=67

Why does a glass slab not disperse light whereas a prism does?

X^2-[√3+1]x+√3=0

prove phythagoras theorem

If a≠b≠c,then prove that the points (a,a×a),(b,b×b), (c,c×c) can never be collinear.

Value of 22/7

Find the sum of all three digits numbers, which leaves the remainder 3 when divided by 7.

Difference between centre and center?

Find the coordinates of the point on y- axis which is nearest to the point (-2,5)

????2019 mai half syllabus ho raha ha

If the area of the surface of a sphere is 32 pie cm sq. , find the diameter of sphere?

Hllo....guys.!!!

Anjali ...

Is there anyone from JNV here?

?k pado ho yaro

Hiiii tanya

Any body free

Kaise marks sbko lgte h ki unke itne aayenge?

i m not able to understand statistics

Aanaya tell me near by city\'

Prove under the root 7 irrational

Prove that √7 is irrational

Here, anybody from punjab. ....?

7/77 is a terminating or non terminating reapting

D G bro.... What u r

What is area of segment

TanA=n tanB and SinA=m sinB prove that cos×cosA=m×m-1

Hey D G... What is ur price? ? Rupee 1or 2

Triangle how many side

So you all are ready for board exams??

Prove that .root 3 is irrational number

I need a help

If area of the hexagon is24√3cmsqaure find its perimeter

The decimal expansion of number 43

I new in 10 class

Formula of volume surface area

Prove that: sec²A - 5tan²A = 5 + 4sec²A

Write the rational numbers between √2 and √3

( 3 raise to the power x minus 1) - 2 power x is equal to 11

Arrre kis kis ko dar lag raha hai 10 class board se???

Hey there

tan A/SecA-1+ tanA/ sec A+1=2cosecA

In a ∆ABC,

Yaro ke yaar

Hii friends how r u

Is completing the square in Maths subject is important

Sin29/cosec61+2cot8cot17cot45cot73cot82-3(sinsin38+sin*sin52)