You can see the bottom of a cove in typical upstate lake at a depth 10 feet when the light intensity is reduced to about per cent of its surface intensityWe assume that light intensity depends on depth according to an exponential law: l = l_{0} * e ^ (- k * t) Find the value of k in units of f * t ^ - 1 If the lake were a deep lake with a deeper bottom, at what depth would the light intensity be reduced to two per cent of its surface intensity