A block of mass m_(1) = 1 kg and anothermass m_(2) = 2 kg are placed together ( see figure) on an inclined plane withangle of inclinationtheta . Various values of theta are given in List I . The coefficient of friction between the block m_(1) and the plane is always zero. The coefficient of static and dynamic friction between the block m_(2) and the plane are equal to mu = 0.3 . In List II expressions for the friction on the block m_(2) are given .Match the correct expression of the friction in List II with the angles given in List I , and choose the option . The acceleration due to gravity is denoted by g . [Useful information : tan ( 5. 5^(@)) = 0.1, tan (11. 5^(@)) = 0.2 , tan (16.5 ^(@)) = 0.3] {:(,"List" I ,, "List" II), (P. , theta = 5^(@) , 1., m_(2)g sin theta ) , (Q. , theta= 10^(@) , 2., (m_(1) + m_(2))g sin theta), (R., theta = 15^(@) , 3., mu m_(2)g cos theta), (S., theta = 20^(@) , 4., mu (m_(1) + m_(2))g cos theta):}