Q.

In which year was Sputnik 1 launched?


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a

1957

b

1975

c

1950

d

1948 

answer is A.

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Detailed Solution

The first artificial Earth Satellite was Sputnik 1. It was launched by the Soviet Union into an elliptical low earth orbit  on 4th of October 1957. It was launched to broadcast the radio pulses.
 
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