SSC SSC GD Constable 2025 Mock Test Series General Knowledge Science Technology and Inventions

ટેલિવિઝનનું શોધક કોણ હતું?

1
વોટસન
2
ન્યુટન
3
ગ્રાહામ બેલ
4
જે.એલ. બેયર્ડ
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