A glass plate 0.9cm thick has a reflective index of 1.50. how long does it
PHYSICS
JAMB 2007
A glass plate 0.9cm thick has a reflective index of 1.50. how long does it take for a pulse of light to pass through the plate? [c = 3.0 x 8 ms-1]
- A) 4.5 x 10-11s
- B) 4.5 x 10-10s
- C) 4 .5 x 10-12 s
- D) 3.0 x 10-10s
Correct Answer: C) 4 .5 x 10-12 s
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