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QUES. A long u shaped wire of width l placed in a perpendicular magnetic field B. A wire of length l is slide on the u shaped wire with a constant velocity u towards right. The resistance of all the wires is r per unit length ...
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Q. IF x= a sec θ, y = b tan θ, prove that d2y/dx2 = - b4/a2y3. ...
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Q.1 If a, b,c and u ,v ,w are the complex numbers representing the vertices of two triangles such that c= (1- r) a +rb and w =(1-r)u +rv, where r is a complex number, then the two triangles (a) same area (b) are similar (c) a ...
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If the line 2x - y +1=0 touches the circle at the point (2,5) and the centre of the circle lies on the line x + y -9 =0. find the equation of the circle. ...
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if a denotes the number of permutations of (x+2) things taken all at a time,b the number of permutations of x things taken 11 at a time and c the number of permutations of (x-11) things taken all at a time such that a=182bc, ...
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QUES.1 A metal sphere of radius a and mass M is surrounded by a thin uniform spherical shell of eual mass and radius 4a . The cente of the shell falls on the surface of the inner sphere .find the gravitational field at the po ...
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A cylinder of mass M is suspended through two strings wrapped around it . Another cylinder B of mass m is connected by a masless string that is wrapped around the cylinders in opposite directions . During the fall the strings ...
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A particle of mass m collides oblically with another particle of mass 2m initially at rest. Both the particles have same diameter at the instant of collision velocity of 1st particle is making an angle of pie/3 with the line ...
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If a,b ,c,d and p are different real numbers such that :(a2+b2+c2)p2-2(ab+bc+cd)p+(b2+c2+d2)≤0, then show that a,b,c and d are in G.P ...
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