When a girl moves towards a plane mirror at a s... - JAMB Physics 2019 Question
When a girl moves towards a plane mirror at a speed of 4.0m/s, the distance between the girl & her image reduces a speed of
A
2 m/s
B
4 m/s
C
8 m/s
D
12 m/s
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Correct Option: C
| v = | d
t | or | v | α | d |
d = x, v = 4m/s
d = 2x, v = ? (girl & image)
| v | = | 2 × 4
x | = | 8m/s |
v = 8m/s
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