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With reference to the Heat index, consider the following statements:
  1. Heat index is a measure of how hot it feels when humidity is factored in along with the air temperature, and the figures were calculated using data from the India Meteorological Department (IMD).
  2. It is also known as the apparent temperature.
Which of the statements given above is/are correct?
  • a)
    1 only
  • b)
    2 only
  • c)
    Both 1 and 2
  • d)
    Neither 1 nor 2
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
With reference to the Heat index, consider the following statements: H...
India to launch its own heat index next year to quantify heat hazard, generate impact-based heat wave alerts for specific locations.
  • Heat index is a measure of how hot it feels when humidity is factored in along with the air temperature, and the figures were calculated using data from the India Meteorological Department (IMD).
  • It is also known as the apparent temperature.
  • When the body gets too hot, it begins to perspire or sweat to cool itself off.
  • If the perspiration is not able to evaporate, the body cannot regulate its temperature.
  • Evaporation is a cooling process. When perspiration is evaporated off the body, it effectively reduces the body's temperature. When the atmospheric moisture content (i.e. relative humidity) is high, the rate of evaporation from the body decreases.
  • In other words, the human body feels warmer in humid conditions. The opposite is true when the relative humidity decreases because the rate of perspiration increases.
  • The body actually feels cooler in arid conditions.
  • There is direct relationship between the air temperature and relative humidity and the heat index, meaning as the air temperature and relative humidity increase (decrease), the heat index increases (decreases).
Hence both statements are correct.
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Community Answer
With reference to the Heat index, consider the following statements: H...
Heat index is a measure of how hot it feels when humidity is factored in along with the air temperature. It takes into account the combined effects of temperature and humidity on the human body. The heat index is a valuable tool in determining the level of discomfort a person may feel when exposed to high temperatures and high humidity.

The figures for the heat index are calculated using data from the India Meteorological Department (IMD). The IMD collects data on temperature and humidity from various weather stations across India and uses this data to calculate the heat index. The heat index is then used to provide information on how hot it feels to be outside and the level of discomfort that may be experienced.

The heat index is also known as the apparent temperature. This is because it is a measure of how hot it feels, rather than the actual temperature. The heat index takes into account the body's ability to cool itself through sweating and evaporation, which is affected by the level of humidity in the air. When the humidity is high, the body's ability to cool itself is reduced, making it feel hotter than the actual temperature.

In summary, the correct statements are:

1. Heat index is a measure of how hot it feels when humidity is factored in along with the air temperature.
2. The figures for the heat index were calculated using data from the India Meteorological Department (IMD).
3. The heat index is also known as the apparent temperature.

Therefore, option C, which states that both statements are correct, is the correct answer.
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With reference to the Heat index, consider the following statements: Heat index is a measure of how hot it feels when humidity is factored in along with the air temperature, and the figures were calculated using data from the India Meteorological Department (IMD). It is also known as the apparent temperature.Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'C'. Can you explain this answer?
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