| 1. Electromagnetic | Aefuen Hypothesis |
| 2. Interstellar ??? | Otto Schmidt Hypothesis????? |
| 3. Tidal Hypothesis? ? | Roche |
| 4. Binary Star ???????? | Weitzsacker Hypothesis???? |
A) ?1 and 2???????? ??????????????
B) ?2 and 3
C) ?3 and 4???????? ??????????????
D) ?4 and 1
Correct Answer: A
Solution :
?Tidal Hypothesis was propounded by Jeans and Jeffreys and Binary Star Hypothesis was put forward by H. N. Russel
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