The strength of winds is measured with the help of A. Beaufort scale B. Wind indicator C. Barometers D. None of these

The correct answer is: A. Beaufort scale

The Beaufort scale is an empirical measure that relates wind speed to observed conditions at sea or on land. It was devised in 1805 by Sir Francis Beaufort, then a Royal Navy captain, as an aid to navigation. The scale is based on the observed effects of the wind on the sea, on land, and on trees.

The Beaufort scale is divided into 12 categories, from 0 to 12, with increasing wind speed. The scale is not linear, so a change of one Beaufort number does not correspond to a

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