alleryS. K. ಕೋಲ್ಕತ್ತಾದಲ್ಲಿ ಮಿತ್ರಾ ಅವರ 1920s ರೇಡಿಯೋ ಪ್ರಯೋಗಗಳು ಯಾವ ವಾತಾವರಣದ ಪ್ರದೇಶವನ್ನು ತನಿಖೆ ಮಾಡಿದವು?
Aಟ್ರೋಪೋಸ್ಪಿಯರ್
Bಅಯಾನುಗೋಳ
Cಓಝೋನ್ ಪದರ
Dಮೆಸೊಪಾಸ್
Answer & Solution
Correct answer: B. ಅಯಾನುಗೋಳ
S. K. ಮಿತ್ರಾ ಅಯಾನುಗೋಳವನ್ನು ಧ್ವನಿಸಲು ನೆಲ-ಆಧಾರಿತ ರೇಡಿಯೊವನ್ನು ಬಳಸಿದರು, ಇದು ಭಾರತೀಯ ಬಾಹ್ಯಾಕಾಶ ಸಂಶೋಧನೆಯ ಆರಂಭಿಕ ಹೆಜ್ಜೆಯಾಗಿದೆ.
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