state gov WBPSC Clerkship Mock Test 2023 - 24 General Knowledge Science Technology and Inventions

इतिहास में ओले रोमर ने पहली बार प्रकाश की गति को किस वर्ष मापा था?

A. 1776

B. 1676

C. 1876

D. 1867

1
A
2
D
3
B
4
C
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