amber walks towards the back of a train at 3mph. The train is moving foward at 65mph. Find the velocity of amber relative on the
1 answer:
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Answer:
f = 1 m
Explanation:
The magnification of the lens is given by the formula:
where,
M = Magnification = 4
q = image distance = 5 m
p = object distance = ?
Therefore,
Now using thin lens formula:
<u>f = 1 m</u>