ENTRANCEINDIA | Exams Question Papers General Knowledge … · 2015. 10. 31. · (B) L 1.34c The...
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ENTRANCEINDIA | Exams Question Papers General Knowledge … · 2015. 10. 31. · (B) L 1.34c The Doppler shift in the wavelengths of Ha (6561 Å) line from a Star which is moving