ETOILE MODERN BILINGUAL COLLEGE DOUALA SUBJECT: PHYSICS/ENERGETICS CLASS: LES DA E:-/10/2072 EVALUATION: CA Instructions. Answer all questions: 4. Every thermometer is contains a thermometric substance that has a thermometric properly. These properties are used to establish their fixed points. III. Define the underlined words 3 (Marks) IV. List four types of thermometers and their thermometric properties (4Mks) 5. At constant pressure, a constant volume gas thermometer was placed in context with pure imelting ice. then in steam above boiling water and finally in a hot liquid. The pressure read was 1.35 X 10'Pa, 3.21 x 10ºPay and 2.09 X 10 Pa respectively. When a newly manufactured mercury thermometer was used, the following Preadings were obtained for the same temperatures above, 4cm, 26cm and 1.2.7cm respectively Calculate the temperature read by the gas thermometer (2Mrks) Calculate the temperature read by the mercury thermometer (2Marks) - V. VI. State your observation from the answers in (i) and (ii) above and state a reason for the observation. (3Marks) 6. The thermodynamic scale is also called the absolute temperature scale. It is defined using the triple point of water. At room temperature the resistance of a certain thermometer was 7.166ohms and 6.750 ohms at the triple point. With regards to the above mentioned scale, define temperature and states its S.I unit (2 Marks) Define triple point (1 Marks) V. VI. VII. VIII. Why is it called an absolute temperature scale? (2 Marks) Calculate the temperature of the room (2 Marks) ne lam 20
