{"id":19346,"date":"2018-01-29T10:16:44","date_gmt":"2018-01-29T10:16:44","guid":{"rendered":"https:\/\/www.aplustopper.com\/?p=19346"},"modified":"2020-11-24T10:08:09","modified_gmt":"2020-11-24T04:38:09","slug":"frank-icse-solutions-class-9-physics-heat-thermometry","status":"publish","type":"post","link":"https:\/\/www.aplustopper.com\/frank-icse-solutions-class-9-physics-heat-thermometry\/","title":{"rendered":"Frank ICSE Solutions for Class 9 Physics – Heat: Thermometry"},"content":{"rendered":"
PAGE NO: 209<\/strong><\/span> Solution 2:<\/strong><\/span> Solution 3:<\/strong><\/span> Solution 4:<\/strong><\/span> Solution 5:<\/strong><\/span> Solution 6:<\/strong><\/span> Solution 7:<\/strong><\/span> Solution 8:<\/strong><\/span> Solution 9:<\/strong><\/span> Solution 10:<\/strong><\/span> Solution 11:<\/strong><\/span> Solution 12:<\/strong><\/span> Solution 13:<\/strong><\/span> Solution 14:<\/strong><\/span> Solution 15:<\/strong><\/span> Solution 16:<\/strong><\/span> Solution 17:<\/strong><\/span> Solution 18:<\/strong><\/span> Solution 19:<\/strong><\/span> Solution 20:<\/strong><\/span> Solution 21:<\/strong><\/span> Solution 22:<\/strong><\/span> Solution 23:<\/strong><\/span> Solution 24:<\/strong><\/span> PAGE NO : 210<\/strong><\/span> Solution 26:<\/strong><\/span> Solution 27:<\/strong><\/span> Solution 28:<\/strong><\/span> Solution 29:<\/strong><\/span> Solution 30:<\/strong><\/span> Physics<\/a>Chemistry<\/a>Biology<\/a>Maths<\/a><\/p>\n","protected":false},"excerpt":{"rendered":" Frank ICSE Solutions for Class 9 Physics – Heat: Thermometry PAGE NO: 209 Solution 1: Temperature is the quantity that tells about the thermal state of a body i.e. the degree of hotness or coldness of a body. Solution 2: Thermometer is used for measuring the temperature of a body. Solution 3: Thermometer works on […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[6442,3034,404],"tags":[6813,6840,6837,6861,6824,6839,6838,6811,6836],"yoast_head":"\n
\nSolution 1:<\/strong><\/span>
\nTemperature is the quantity that tells about the thermal state of a body i.e. the degree of hotness or coldness of a body.<\/p>\n
\nThermometer is used for measuring the temperature of a body.<\/p>\n
\nThermometer works on the principal that substances expand when heated and contract on cooling.<\/p>\n
\nRange of thermometer is the range of temperature which can be measured by thermometer.<\/p>\n
\nMercury is the liquid used in a clinical thermometer<\/p>\n
\nThe usual range of temperature marked on clinical thermometer is 95\u00b0 F to 110\u00b0F.<\/p>\n
\nFahrenheit designed the first thermometer.<\/p>\n
\nBefore constructing a thermometer, we determine lower fixed point and upper fixed point and divide the whole range of thermometer into specific number of equal divisions to provide a scale for measuring the temperatures within a range.<\/p>\n
\nThe clinical thermometer is specially designed thermometer used to measure the temperature of a human body easily and as accurately as possible.<\/p>\n
\nThree properties of a liquid which make it suitable to be used in a thermometer are:<\/p>\n\n
\nTwo disadvantages of using mercury as a thermometric liquid:<\/p>\n\n
\nThree advantages of using mercury as a thermometric liquid:<\/p>\n\n
\nWater is not used as a thermometric liquid because it has low coefficient of expansion so it is less sensitive to temperature changes. Moreover, it is transparent thus making it difficult to read the thermometer and water evaporates with time thus producing error and also the freezing and boiling points are also low.<\/p>\n
\nTemperature in Kelvin To K = Temperature in Celsius To C + 273.
\nTo K = 0\u00b0C + 273
\nTo K =273 K.<\/p>\n
\nBody temperature of a healthy person is 98.4oF.
\nWe know C\/100 = (F – 32)\/180.
\nC =5\/9(F- 32)
\nC = 5\/9(98.4 – 32)
\nC = 5\/9 x 66.4
\nC =36.88\u00b0C
\nTemperature of body of healthy man is 36.88\u00b0C.<\/p>\n
\nAbsolute scale of temperature is Kelvin scale.
\nConversion of temperature from Celsius to Kelvin scale is
\nTemperature in Kelvin To K = Temperature in Celsius To C + 273.
\nSo a rise of temperature of 1\u00b0C in Celsius scale is equal to rise of 1\u00b0K in Kelvin scale.<\/p>\n
\nKelvin temperature scale is used in SI system.<\/p>\n
\nIn Celsius scale there are two fixed points namely lower fixed point and upper fixed point at 0\u00b0C and 100\u00b0C respectively. This range is divided into 100 equal divisions and each part gives 1\u00b0C.<\/p>\n
\nWe know C\/100 = (F – 32)\/180.
\nC =5\/9(F- 32)
\n9\/5 C + 32 =F
\nF = 9\/5 C + 32.
\nTemperature given in Celsius = -15\u00b0C.
\nF = 9\/5 x (-15) +32
\nF = -27 +32
\nF = 5\u00b0F.<\/p>\n
\nAbsolute zero of temperature is 0\u00b0K.
\nTemperature in Kelvin To K = Temperature in Celsius To C + 273.
\n0\u00b0K = To C +273.
\nTo C = -273\u00b0C.
\nAbsolute zero of temperature on Celsius scale is -273\u00b0C.<\/p>\n
\nDifference of temperature of two bodies in Celsius scale = 1\u00b0C.
\nWe know C\/100 = (F – 32)\/180.
\nC =5\/9(F- 32)
\n9\/5 C + 32 =F
\nF = 9\/5 C + 32.
\nSo, difference of 1\u00b0 in Celsius scale is equal to the difference of 9\/5\u00b0 in Fahrenheit scale.
\nThus, Difference of 1\u00b0C of temperature of two bodies in Celsius scale is equal to difference of 1.8\u00b0 in Fahrenheit scale.<\/p>\n
\nCelsius invented the Celsius scale of temperature.<\/p>\n
\nFahrenheit invented the Fahrenheit scale of temperature.<\/p>\n
\nMercury, alcohol are commonly used in thermometers.<\/p>\n
\nSolution 25:<\/strong><\/span>
\nCamel and are two animals which are able to increase their body temperature in summers and decrease their body temperature in winters.<\/p>\n
\nCGS unit of heat is Joule denoted by J.
\n1 J is amount of heat required to raise the temperature of a body by 1\/4.12\u00b0C of temperature.<\/p>\n
\n<\/p>\n
\n<\/p>\n
\nRelation between Celsius and Fahrenheit scales of temperature is
\nC\/100 = (F – 32)\/180.<\/p>\n
\nTemperature of ice point on Fahrenheit scale =32\u00b0F.
\nTemperature of steam point on Fahrenheit scale =212\u00b0<\/p>\n