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Today’s GK
Mock Test
Railway (RRB) Mini Mock – 1
EN
HI
20:00
Question 1/25
+0 negative
Speed of light in vacuum is approximately?
A
3 × 10^8 m/s
B
3 × 10^6 m/s
C
3 × 10^5 m/s
D
3 × 10^10 m/s
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