20. the molar absorption coeficient of sea water in the visible region is 6.2 x 10 m what will be depth from the sea surtace at which intensity of light becomes

20. The molar absorption coeficient of sea water in the visible region is 6.2 x 10 M What will be depth from the sea surtace at which intensity of light becomes one-tenth of that a the surface: (a) 2.9 m 6) 0.9 m (C 1.1 m (d) 0.8 m