Question

The thermometer is one of the first measuring instruments with which we become familiar; nevertheless, the accurate measurement of temperature is a rather new concept, dating back only 150 to 250 years ago. A thermometer is an instrument that measures temperature. It can measure the temperature of a solid such as food, a liquid such as water, or a gas such as air. The three most common units of measurement for temperature are Celsius, Fahrenheit, and Kelvin. The first step in making a thermometer was probably taken from thermoscope in the second century BC, by Philo of Byzantium.
His experimental setup comprised a hollow lead sphere connected with a tight seal to one end of a pipe, while the other end of the pipe was kept under water in another vessel. Philo took the following steps to measure the hotness and coldness of the hollow lead sphere. l He put the sphere outside in the sunlight and saw that some of the air enclosed in the tube passed out when the sphere became hot. He saw that the air descended from the tube into the water, producing a lot of bubbles. l Then the sphere is put back in the shade, that is, where the sun’s rays do not reach it and he saw that the water rose along the neck of the tube. l He repeated this method many times to see the same thing happening. He used many different methods to heat the sphere, with fire, or even pouring hot water over it. The result remained the same.
According to his observation, which of the following options would be correct.
a) There is a direct relationship between the rise of the water in the tube to the heating of the lead sphere.
b) There is an inverse relationship between the rise of the water in the tube to the heating of the lead sphere.
c) There is no relationship between the rise of the water in the tube to the heating of the lead sphere.
d) Difference in air pressure affects the rise of water in the tube.

Answer 1

Answer:

Answer is option (A) there is a direct relationship between the rise of the water in the tube to the heating of the lead sphere