What is 2f In concave mirrors?

Physics

1 answer:

musickatia [10]2 years ago

4 0

The object is farther away then two principles focal lengths from the concave lens

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(a) Period of the wave
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since in our problem the period is $T=5.0 s$ , the frequency is
$f= \frac{1}{5.0 s}=0.2 Hz$

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Answer: the pair of sunglasses

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