WHAT IS TEMPERATURE ? | SCALE OF TEMPERATURE MEASUREMENT | FREEZING POINT OF WATER | TEMPERATURE ko kaise defined kare | TEMPERATURE KYA HAI|

 Temperature (T):- Temperature is the measure of hotness or coldness of the substance expressed in terms of any several scales.

:- It is fundamental physical quality.

:- It is scalar quality.

:- S.I unit of temperature is degree Celsius(°C)          or  Kelvin (k) .

***GENERALLY THREE TYPES SCALES ARE              USED TO MEASURE THE TEMPERATURE.

(1) Celsius Scale

(2) Kelvin Scale

(3) Fehrenheit scale

** Water is considered as the reference material for measuring temperature with scale. in which consider that freezing point of water in degree Celsius Scale is 0°C , Fahrenheit scale is 32°F and in Kelvin Scale is 273.15K and boiling point of water in degree Celsius Scale is 100°C , In Fahrenheit scale is 212°F and in Kelvin Scale is 373.15K.

###  CONVERSION OF READING FROM ONE             SCALE TO ANOTHER SCALE.

                           Question Answers

(1) The reading of a Fahrenheit thermometer is 77°F . Express this reading on

             (a) Celcius thermometer

             (b) Kelvin    thermometer.

(2) The temperature of water is 50°C. What will be its temperature in Fahrenheit scale.

(3) Can there be any temperature which has same numerical values in Kelvin and Fahrenheit scales.

(4) Is there any temperature which has same values both in Kelvin Scale and Centigrade scale.

(5) Calculate the value of absolute zero on Centigrade scale.

(6) Which of the following temperature 120°F and 50°C is the highest and lowest temperature

(7) A faulty Centigrade thermometer has its freezing point and boiling point respectively -10°C and 105°C, what will be its reading if it is dipped in a liquid whose actual temperature is 50°C.

(8) On a new scale of temperature is called Ramlal scale, the freezing point and boiling point of water are -29°R and  171°R respectively, what will be the temperature on new scale , corresponding to a temperature of -29°C on the Celcius scale.

(9) The temperature of an object is raised from 45°F to 90°F what is the change in its temperature on the Celcius scale and on the Kelvin Scale?

(10) Can there be any temperature which has same numerical values in Celcius and Fahrenheit scales.