A ray of light is incident at 60o on a prism of refracting angle 30o . The emergent ray is at an angle 30o with the incident ray. The value of refractive index of the prism is
Which of the following reacts rapidly with oxygen in air at ordinary temperature
The d-electron configurations of Cr2+, Mn2+, Fe2+ and Ni2+ are 3d4, 3d5, 3d6 and 3d8 respectively. Which one of the following aqua complexes will exhibit the minimum paramagnetic behaviour?
(At No. Cr = 24, Mn = 25, Fe = 26, Ni = 28)
Which of the following method is most appropriate for the manufacture of methane?
The number of terms of the A.P. 3, 7, 11, 15,...to be taken so that the sum is 406 is
A force acts at a point A whose position vector is
. If point of application of F → moves from A to the point B with position vector
, then work done by F is
The general solution of the differential equation is given by
The solution of the equation (1+x2)(1+y)dy+(1+x)(1+y2)dx=0 is
The argument and modulus of [(1+i)/(1-i)] are respectively
The area bounded by the parabola x = 4 − y2 and the y-axis, in square units is
f : R → R is a function defined by f(x) = 10 x − 7. If g = f -1 then g(x) =