4. Find the Miller indices of a plane that makes an intercept of 1 on x-axis, 2 on y-axis and parallel to the c-axis. [3] 5. The lattice parameters of a crystal are in the ratio a:b:c = 0.52:1.00:0.48. If a plane with Miller indices (121) cuts an intercept of 2.6 along the x-axis, find the length of the intercepts along y-and z-axis. [3]