

McqMate
Q. |
Momentum of electron having mass 9.1 × 10 -31 kg and velocity 2.0 ×107 is {{}} |
A. | 1.91 × 10-23 |
B. | 2.34 × 10-23 |
C. | 3.11 × 10-19 |
D. | 7.88 × 10-34 |
Answer» A. 1.91 × 10-23 |
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