JAMB - Physics (1983 - No. 38)
Which of the following may be used to determine the relative humidity in a physics laboratory
I. Manometer
II. Wet-and-Dry Bulb Hygrometer
III. Hair Hygrometer
IV. A Hydrometer
I. Manometer
II. Wet-and-Dry Bulb Hygrometer
III. Hair Hygrometer
IV. A Hydrometer
I Only
II and III Only
II Only
III Only
II,IIIand IV Only