alleryकोलकाता येथे 1920 च्या दशकात एस. के. मित्रा यांनी केलेल्या रेडिओ प्रयोगांद्वारे वातावरणातील कोणत्या थराचा शोध घेण्यात आला?
Aतपांबर
Bआयनांबर
Cओझोन थर
Dमेसोपॉज
Answer & Solution
Correct answer: B. आयनांबर
एस. के. मित्रा यांनी आयनांबराचा वेध घेण्यासाठी जमिनीवरील रेडिओचा वापर केला, जे भारतीय अंतराळ संशोधनातील सुरुवातीचे पाऊल होते.
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