Match the points under List I with those under List

II. List I (Instrument) List II (Use) 1. Sextant a. Measures the angle between two visible objects 2. Udometer b. Measures small quantities of radiant heat 3. Thermopile c. Measures the temperature of a surface 4. Pyrometer d. Measures the amount of rainfall

A 1-b, 2-d, 3-c, 4-a

B 1-a, 2-d, 3-b, 4-c

C 1-c, 2-d, 3-b, 4-a

D 1-c, 2-b, 3-d, 4-a

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