3 years ago

Which of the following describes the efficiency of real machines?

2 answers:

4 0

Are you sure! Becuase I dont want to get this one wrong!

3 0

Choice-B is the true one.

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topjm [15]

Answer:

0.776 m far Pinhole should be placed before the viewing screen

Explanation:

For circular aperture of diameter D will have a bright central maximum of diameter, width is given by

$w=\frac{2.44 \lambda L}{D}$

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