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3 years ago

9

Which of the following diagrams involves a virtual image ?

1 answer:

sergiy2304 [10]3 years ago

7 0

Answer:

The third diagram

Explanation:

<u>A virtual image</u> is an image that can not be formed on a screen.
<u>A convex lens</u> can form both virtual and real image depending on the position of the object from the lens.
A virtual image in convex lens is formed when the object is placed between the focus and the optical center of the lens.
In the third diagram, a virtual image is formed because the position of the object is between the focus and the optical center of the convex lens.

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4 years ago

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Answer:

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Answer:

<h3>(A) The width $x = 0.24 \times 10^{-3}$ m</h3><h3>(B) The new width is $1.32 \times 10^{-3}$ m</h3>

Explanation:

Given :

Focal length $f = 135 \times 10^{-3} m$

Maximum aperture $D = \frac{f}{4}$

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(A)

From rayleigh criterion,

$\theta = \frac{1.22 \lambda }{D}$

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(B)

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