Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
154 views
in General by (110k points)
closed by
As per the Tenth General Conference on Weights and Measures in 1954, the reference point temperature chosen for the Kelvin scale is ______.
1. Freezing point of water
2. Boiling point of water
3. Critical point of water
4. Triple point of water

1 Answer

0 votes
by (105k points)
selected by
 
Best answer
Correct Answer - Option 4 : Triple point of water

Explanation:

Temperature: It is the measure of the degree of hotness and coldness of a body. The SI unit of temperature is Kelvin (K).

The major temperature scales are:

  • Celsius scale: It is also known as the centigrade scale, and most commonly used scale. It is defined from assigning 0° C to 100° C of freezing and boiling point of water at 1 atmospheric pressure.
  • Fahrenheit scale: The temperature scale which is based on 32° for the freezing point of water and 212° for the boiling point of water and the interval between the two range divided into 180 equal parts is called Degree Fahrenheit scale.
  • Kelvin scale: It is the base unit of temperature, denoted with K. There are no negative numbers on the Kelvin scale as the lowest is 0 K.

The relation between Celsius and Kelvin is:

°C + 273.15 = K

The relation between degree Fahrenheit and degree Celsius is given by:

\(\frac{{^\circ F - 32}}{9} = \frac{{^\circ C}}{5}\)

Kelvin scale is an absolute scale and it is also known as the absolute thermodynamic scale.

Before 1954 temperature scales were based on two reference points. e.g. Degree Celsius and Fahrenheit scale.

After 1954 the scale and temperature measurement has been based on a single reference point. i.e the Tripple point of water is used as a single reference point.

According to the internationally accepted convention \(1K = ({1\over273.16})\) th of the triple point of water.

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...