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A block of mass
*This section contains four questions, each having two matching lists. Choices for the correct combination of elements from List-I and List-II are given as options (A), (B), (C) and (D), out of which one is correct.*

A block of mass

*m*

_{1}= 1 kg another mass

*m*

_{2}= 2 kg, are placed together (see figure) on an inclined plane with angle of inclination θ. Various values of θ 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 μ = 0.3. In List II expressions for the friction on 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 correct option. The acceleration due to gravity is denoted by g.

[Useful information: tan (5.5^{0}) ≈ 0.1; tan (11.5^{0}) ≈ 0.2; tan (16.5^{0}) ≈ 0.3]