A Satisfactory Radiograph Is Produced as Follows: 1 $\phi$ 2p, 70 KVp, 30 MAs, 40 In

Short Answer

A satisfactory radiograph is produced as follows: 1 $\phi$ 2p, 70 kVp, 30 mAs, 40 in.SID, 8:1 grid, 200 RS.A new radiograph is to be produced with the following changes: high frequency, 12:1 grid, and 400 RS.What changes should be made to maintain the original exposure?