pay grade 06

Ionic compound AB has NaCl type of structure. If the radius of A + ion is 41.4 cm. (i) What is the ideal radius of B - ion? (ii) If the radius of A + ion decreases and becomes equal to 30pm, then in what type of structure would AB crystallize and what would be coordination number of A + i..

Using the Rydberg formula, calculate the wavelengths of the first four spectral lines in the Balmer series of the hydrogen spectru..

If the coefficient of mutual inductance of the primary and secondary coils of an induction coil is 6H and a current of 5A is cut off in 1/500 second, calculate the E.M.F f induced in the secondary coi..

The core of a toroid having 3000 turns has inner and outer radii of 11 cm and 12 cm respectively. The magnetic field in the core for a current of 0.70 A is 2.5 T. What is the relative permeability of the cor..

Double convex lenses are to be manufactured from a glass of refractive index 1.55, with both faces having the same radius of curvature. What is the radius of curvature required if the focal length of the lens is to be 20 c..

A car has a fresh storage battery of EMF 12V, internal resistance 5.0 x 10 - 2 W . If the starter motor draws a current of 90 A, what is the terminal voltage of the battery when the starter is o..

Calculate the potential at P due to the charge configuration shown in the figure. If r>>a, then how will you modify the resul..

Two concentric circles of radius 2 cm and 4 cm respectively carry currents of 2A and 4A in a clockwise directio..

06. - Double convex lenses are to be manufactured from a glass of refractive index 1.55, with both faces having the same radius of curvature. What is the radius of curvature required if the focal length of the lens is to be 20 c..

Electricity board charges an overdue of $0.06 per day for the late payment of the electricity bill. The function which describes this is f ( n ) = 0.06 × n , where n is the number of days overdue. What is overdue to be paid, if a customer pays the bill after 8 da..