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Measurement: Temperature & Heat Video Lecture | Physics Class 11 - NEET
FAQs on Measurement: Temperature & Heat Video Lecture - Physics Class 11 - NEET
| 1. What is the difference between temperature and heat? |  |
Ans. Temperature refers to the measure of the average kinetic energy of particles in a substance, while heat is the transfer of energy between two objects due to temperature differences. In simpler terms, temperature is a measure of how hot or cold something is, whereas heat is the energy transferred between objects.
| 2. How is temperature measured? | |
Ans. Temperature is commonly measured using a thermometer. There are various types of thermometers available, such as mercury-in-glass thermometers, digital thermometers, and infrared thermometers. These devices measure the expansion or contraction of a substance, such as mercury or a metal strip, in response to temperature changes.
| 3. What are the different temperature scales used? | |
Ans. The three most commonly used temperature scales are Celsius, Fahrenheit, and Kelvin. Celsius is used in most countries and is based on the freezing and boiling points of water. Fahrenheit is primarily used in the United States. Kelvin is an absolute temperature scale often used in scientific research, where 0 Kelvin represents absolute zero.
| 4. Can temperature and heat be converted into each other? | |
Ans. Temperature and heat are related but not directly convertible. Heat is the energy transferred between objects, while temperature is a measure of the average kinetic energy of particles. However, an increase in heat can raise the temperature of an object, and a decrease in heat can lower its temperature.
| 5. Why is it important to measure temperature and heat accurately? | |
Ans. Accurate measurement of temperature and heat is crucial in various fields, including scientific research, industrial processes, weather forecasting, and medical applications. It helps in understanding the behavior of substances, controlling processes, predicting changes, and maintaining optimal conditions for safety and efficiency.
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