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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Terrestrial radiation is maximum in-
assistant
The correct answer is  Ans. is 'd' i.e., Kerala Terrestrial radiation Radioactive elements such as thorium, Uranium, radium and an isotop of potassium (K40) arc present in man's invironment, e.g., soil, rocks, boiling. o It is estimated that man derives about 50 mrad per year from terrestrial radiation. Area exists (Kerala in India) where the rock formation containing uranium, it can be as high as 2000, mrad a year.