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Assertion (A) : The satellite imageries have revolutionized. The technique of land use classification.
Reason (R) : Traditional land use survey gives a static description of existing land use and is very time, effort and money consuming.

Which one of the following is correct ?

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

Answer: A

Both statements are true and the Reason explains the Assertion.

Satellite imagery transformed land use classification. Images cover large areas at once, repeat at regular intervals, record bands beyond visible light, and can be classified digitally, so land use can be mapped quickly, cheaply and again and again to show change.

The Reason gives the shortcomings that the satellite method overcame: a traditional field survey records land use at one moment only and needs much time, labour and money. Because satellite imagery solved exactly these problems, the Reason explains why it revolutionised the technique, and the other options are wrong.

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