state gov UP Police Assistant Operator (Radio Cadre) Mock Test Physics Electromagnetic Waves Polarization by Reflection

हीरे का अपवर्तन सूचकांक 2.0 है, हीरे में प्रकाश का वेग सेमी/सेकंड में लगभग है:

1
1.5 x 1010
2
6  x 1010
3
3  x 1010
4
2x1010
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