The locus of the foot of perpendicular drawn from the centre of the ellipse x2+3y2=6on any tangent to it is
A sonometer wire of length 1.5 m is made of steel. The tension in it produces an elastic strain of 1 %. What is the fundamental frequency of steel if density and elasticity of steel are 7.7×103kg/m3and2.2×1011N/m2 respectively?
Energy of an electron is given by
Wavelength of light required to excite an electron in an hydrogen atom from level n = 1 to n = 2 will be (h=6.62×10?34Jsandc=3.0×108ms?1)
If the coefficients of x3and x4in the expansion of (1+ax+bx2)(1−2x)18in powers of x are both zero, then (a, b) is equal to
Let a and b be the roots of equation px2+qx+r=0,p=0.. If p, q, r are in A.P. and α1+β1=4, then the value of ∣α−β∣ is