One afternoon, Jamil and his friends were gossiping beside a lake. All on a sudden, Jamil noticed that a bubble from the bottom of the lake of transparent water was coming out on the surface of the water. After coming to the surface, the bubble took a large size. Size of the bubble on the surface was 5 times, and atmospheric pressure was $10^{5} \mathrm{Nm}^{-2} .$ [Density of water, $p = 1000 kgm³$]. Calculate the depth of the lake.