Sun’s temperature is measured by pyrometer thermometer. Pyrometers, specifically designed for high temperatures, are used. They determine temperature by comparing the brightness or color of the Sun’s light to a calibrated filament’s brightness or color. This allows inference of the ...
Tiwari Academy Discussion Latest Questions
In cold countries, alcohol is preferred over mercury as a thermometer liquid because the melting point of alcohol can be lower. This ensures that alcohol remains liquid at lower temperatures, making it effective for use in cold climates where mercury ...
Thermocouples are made by two dissimilar metals. When these metals are joined at both ends, a voltage is generated when there is a temperature difference between the junctions. This voltage can be measured and used to determine the temperature.
Radiation pyrometers measure temperatures above 800°C. These instruments detect thermal radiation emitted by an object and convert it into a temperature reading. They are commonly used in high-temperature industrial processes such as metalworking, ceramics, and glass manufacturing, where temperatures exceed ...
On the Celsius scale of temperature, absolute zero temperature is -273.15°C. Absolute zero is the lowest possible temperature where particles of matter have minimal thermal motion, theoretically reaching a state of complete rest. It serves as the zero point for ...
In terms of Kelvin value, the normal temperature of the human body is approximately 310.15 Kelvin (K). This is derived by adding 273.15 to the Celsius value of normal body temperature, which is approximately 37°C. Therefore, the normal body temperature ...
The temperature at which the readings are the same on Celsius and Fahrenheit thermometers is -40°C. At this temperature, -40°C is equivalent to -40°F. This point is where the two temperature scales intersect, making it the only temperature where the ...
A sudden drop in the reading of the barometer indicates that the weather will be stormy. This drop signals a decreasing atmospheric pressure associated with stormy weather conditions, including precipitation, strong winds, and turbulent weather patterns.
We slip on muddy roads due to lack of friction. Muddy surfaces have reduced frictional force between our shoes and the ground, causing slipping. Option A (Gravitational force) and B (Relative velocity) aren’t directly responsible, while option D (Excess of ...
The pressure inside the soap bubble is less than atmospheric pressure. Surface tension of the soap film creates a pressure slightly higher than outside, but still less than atmospheric pressure. This pressure difference keeps the bubble stable. Therefore, the correct ...