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Assertion (A): Quantitative snowfall estimation by radar is less accurate than rainfall estimation.
Reason (R): Snowflake density and habit vary much more than raindrop shape does.

  • 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 difficulty, and horizontal drift of the slowly falling snow adds a further error. Both effects are absent or much smaller for rain. Rainfall estimation is correspondingly better constrained.

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