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A reflecting surface is represented by the equation Y=frac{2L}{pi }sin left( frac{pi x}{L} ight).~0le xle L . A ray travelling horizontally becomes vertical after reflection. The coordinates of the point (s) where this ray is ...

The three points (– 2, 2), (8, – 2) and (– 4, – 3) are the vertices ...

What is true for {[Fe{(CN)_6}]^{3 - }} and {[Fe{F_6}]^{3 - }} ...

If PSQ is the focal chord of the parabola {{y}^{2}}=8x such that SP=6 . Then the length SQ is ...

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All metabolic processes have +ve Gibbs free energy but they have +ve entropy change.Please justify ...

If a,b,c ε R are distinct then the condition on a,b,c for which the equation 1/x-a + 1/x-b + 1/x-c + 1/x-b-c-a =0 has real roots is (a)a+b+c≠0,a≠0 (b)a-b-c≠0,a≠0 (c)2a=b+c (d) none of these ...

√(3x2+6x+7) + √(5x2+10x+14) = 4-2x-x2 Find the no of real roots... ...

The number of irrational roots of the equation ?? (x2-3x+1)(x2+3x+2)(x2-9x+20)= -30 ...

limx→0 {(1+3x)1/3-1-x} / {(1+x)101- 1-101x} has the value equal to? ...

Why is the value of log-3-27 ≠3? Because... log-3-27 = log-3(-3 * 9)=log-3-3 + log-39 = 1 + 2 = 3 ...

A TRIANGLE ABC HAS AN ANGLE 60 DEGREE.AB=b & BC=C. FIND THE AREA OF THE TRIANGLE. ...

An observer 1.5m tall is 20.5m away from a tower 22m high. Determine the angle of elevation of the top of the tower from the eye of the obseserver. ...

A pole 12 m high casts a shadow 4 √3 m long on the ground. Find the angle of elevation. ...

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Suppose a,b,c are positive integers and f(x) = ax2-bx+c =0 has two distinct roots in (0,1) m then (a) a≥5 (b) b≥5 (c) abc≥25 (d) abc≥5 2 ...

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Um if i am not misinfomred by the over enthusiastic people around me isnt it almost finalsied that jee is being replaced by aptitude test... more infomration please. And if its true then i am surely for it . i beleive as i al ...

Let f(x) = ax2+bx+c where a,b,c ε R. Suppose |f(x)| ≤ 1 for all x ε [0,1],then (a) |a|≤8 (b) |b|≤8 (C) |c|≤1 (d) |a|+|b|+|c|≤17 ...

prove that,the time required for 99.9% completion of a first order reaction is almost ten times that required for half the reaction ...

What will be the minimum percentage for the students of WB board to be eligible for JEE 2013? ...

please remove this new look.... i think this has resulted in loss of users from targetIIT.... some demerits i feel are... 1. we can't see recent posts... 2. neither an option for latex 3. looks so bad.. 4. a bit complex to us ...

A point moves such that the sum of squares of its distances from the four sides of a square is constant;prove that it always lies on a circle. ...

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What is the minimum distance between any two curves?? ...

Show by a calculation (using the formula _G°__RT ln Keq) that a free-energy difference of 7.6 kJ mol_1 between the axial and equatorial forms of methylcyclohexane at 25°C (with the equatorial form being more stable) does co ...

Let α be a repeated root of p(x) = X3+ 3ax2 +3bx+c =0 , then (a) α is a root of x2+2ax+b=0 (b) α =(c-ab)/2(a2-b) (c) α=(ab-c)/(a2 -b) (d) α is a root of ax2+2bx+c =0 ...