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# $0.005\;cm$ thick coating of silver is deposited on a plate of $0.5 \;m^2$ area. The number of silver atoms deposited on the plate are (atomic mass of silver $=108$ , and its density $=7.9g cm^{-3}$

$(a)\;1.1 \times 10^{10} \\ (b)\;1.1 \times 10^{15}\\(c)\;1.1 \times 10^{24} \\(d)\;1.1 \times 10^{30}$