Let the position vectors of two points P and Q be and
respectively. Let R and S be two points such that the direction ratios of lines PR and QS are ( 4, -1, 2 ) and ( -2, 1, -2 ), respectively. Let lines PR and QS intersect at T. If the vector
is perpendicular to both
and
and the length of vector
is
units, then the modulus of a position vector of A is :
Option: 1
Option: 2
Option: 3
Option: 4
dr's of normal to the plane containing P, T and Q will be proportional to :
5 g of Na2SO4 was dissolved in x g of H2O. The change in freezing point was found to be 3.820C. If Na2SO4 is 81.5% ionised, the value of x (K
A capacitor is made of two square plates each of side 'a' making a very small angle
A solution of m-chloroaniline, m-chlorophenol and m-chlorobenzoic acid in ethyl acetate was extracted initially with a saturated solution of NaHCO3 to give fraction A. The leftover organic phase was extracted with d