railway RRB Group D Mock Test Series 2024-25 General Science Physics Wave

ನಿರ್ವಾತದಲ್ಲಿ ಬೆಳಕಿನ ಜವ ಎಷ್ಟು?

1
3 x 1010 ಮೀ/ಸೆ
2
3 x 108 ಮೀ/ಸೆ
3
2 x 108 ಮೀ/ಸೆ
4
2.25 x 108 ಮೀ/ಸೆ
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