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Assertion (A): The effective resolution of a model is coarser than its grid spacing.
Reason (R): Several grid points are needed before a feature is represented with any fidelity.

  • A.Both A and R are true, but R is not the correct explanation of A
  • B.A is true but R is false
  • C.A is false but R is true
  • D.Both A and R are true, and R is the correct explanation of A

Answer: D

Both are true and the reason gives the rule of thumb, and quoting the grid spacing as though it were the resolution overstates what the model can actually do. Several grid lengths is the usual figure for the smallest feature carried faithfully.

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