is reflected back through the focal point

NM^2C-1. Hence option b is correct

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Two male members can be selected in9C2 ways = 36 Two female members can be selected by 7C2 = 21 way...

t = w0xI/T = w0([1/2]MR^2)/2/3mgαR = 3Rwo/4uαg This is the time taken by the disc to co

The unit of ebullioscopic constant is K kg mol-1 or K molality-1.Mar 13, 2018 ...

Apply the formula a^n + b^n= (a+b)(a^n-1 - a^n-2.b.....+b^n) we can  group the terms 1,1996&...

https://clay6.com/qa/32404/in-a-potentiometer-experiment-it-is-found-that-no-current-flows-through...

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x^2-x+3k=0, let the root of the equation be a, hence a^2-a+3k=0------(1) The root of the equation x...

If wires are of different material then their thermal expansion (due to temperature change duri...

Let the present ages of A be x and that of B be y before 7 years, x-7/y-7 = 3/4 => 4x-28 = 3y-...

Since the identity element is 1, its order is 1 (-1)^1 = -1 and (-1)^2 = 1, hence the order of -1 i...

T = 2pisq rt [l/g] dT/T x 100 = 0.5 x (dl/l x 100) = 0.5 x 2% 1% ∴ If length of pendulum is

Let the roots of x^2+2ax+b=0 be p and q and that of x^2+bx+a = 0 be p and r For the first equation,...

Let f:D1----> R and g:D2---->R be two real functions, then their sum f+g defined as that fun...

Consider (1,1) and (2,3) Given g(x) = ax+b That is a(1) + b = 1  => a+b = 1------(1) a(2)...

12 = 3x4 4! = 1x2x3x4 5! = 1x2x3x4x5 ... Hence from 4! every term is a factor of 12 Therefore 0!...

Initial velocity w = 0 Angular acceleration a = 2 rad/s^2 Time interval - 10s angular displacemen...

y = x -3 f^-1(x)= y+3 is the inverse of the function

Distance = speed x time speed = 40km/hr, time = 1hr Hence the distance travelled = 40km

f(x) = x^2 f'(x) = 2x is the gradient of the curve.

The value of sin30 = 1/2 = 0.5

Given -b/a <3 and c/a >3, hence -b/a < 3 <c/a or -b <3a <c or b+c > 3a, but...

https://clay6.com/qa/106211/find-the-differential-equation-of-all-hyperbolas-which-pass-thro...

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v^2-u^2=2gs Here v= 40m/s, g = 10m/s^2 and t= 4s and u= 0 [ 40x40 - 0]/2x10 = s Therefore s = 80m...

Line of regression of X on Y is X = a+bY slope of the line is dy/dx y = (x-a)/b or x/b -a/b ther...

A minimum of three measures are needed to construct a triangle. It may be three sides, or two side...

Tn = n!/P + Q + R, where P,Q and R are the degrees of the terms a^3, a^-3 and 1 Now P+Q+R = 100 He...

Let the numbers be a/r,a,ar Hence a/r+a+ar=7/9 a/r.a.ar=-8/27, this implies, a^3 = - 8/27 or a = 2...

This can be rewritten as 2rt5/5, 5/5,8rt5/5,11/5... Next the next numbers will be 2rt5/5,5,5,8rt5/...

[1-i/1+i]x  [1-i/1-i] =(1-i)^2/2 = 1-2i +i^2/2 = -2i/2 = -i (i^2 = -1) 0+(-1)b, therefore a =...

When x = 5 and y = -2, 7(5) + 3(-2) = 35-6 = 29

Centroid of a tetrahedron G = [X1+X2+X3+X4/4], [Y1+Y2+Y3+Y4/4],Z1+Z2+Z3+Z4/4] =(-3,4,5) Centroid o...

V-E+F = 2 Therefore V -9 +5 = 2 Therefore V = 6

Given equation is 5x^2 - 2xy +5y^2 +2x -10y -7 = 0 Condtion for general equation of second degree e...

(1+x)^p/q = 1+p/1! (x/q) + p(p-2)/2!(x/q)^2 +...

Let the amount left by the man be x Amount left for his wife = 7,89,615 Amount left for his 1st so...

a can be {2,3} {(2,8), (3,27)} Therefore R = {8,27}

(5x+y-3z)^2 = (5x)^2+y^2+(-3z)^2 +2(5x)y+2(y)(-3z)+2(5x)(-3z) = 25x^2+y^2+9z^2+10xy-6yz-30xz

There are 4 aces in a deck of 52 cards. The probability of getting an Ace in first attempt = 4/52 =...

Mass of the sphere = 2kg and radius = 0.1m. Moment of inertia I = (2/5)Mr^2 Total energy = (1/2)Iw^...

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