Knot is a measure of – (1) The speed of ship (2) The curvature of spherical objects (3) Solar radiation (4) Intensity of earthquake shock

Knot is a measure of – (1) The speed of ship (2) The curvature of spherical objects (3) Solar radiation (4) Intensity of earthquake shock
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(1) The speed of ship Explanation: The knot (pronounced not) is a unit of speed equal to one nautical mile (1.852 km) per hour, approximately 1.151 mph. There is no standard abbreviation but km is commonly used. The knot is a non-SI unit accepted for use with the International System of Units (SI).
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