When object distance is smaller than the focal length of a convex lens, then the rays diverge.
Here, object distance = 20 cm
focal length = 25 cm
20 < 25
Thus, the lens are <u>diverging</u>
<u></u>
<h3>
What is focal length?</h3>
The fundamental description of a camera lens is its focal length, which is often expressed in millimeters (mm). It is not a measurement of the physical length of a lens.
But rather a calculation of the optical distance between the focal plane of the camera's digital sensor or 35mm film to the location where light rays converge to make a sharp image of an object. When a lens is focussed to infinity, its focal length can be calculated.
Learn more about focal length
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1.) The rain will erode the concrete that's why sometimes you see marks in concrete surfaces.
2.) The streams, creeks, rivers, and etc, would overflow or flood and make new bodies of water but then when it dries up the water will dry up.
Hookes law states F=kX where F is the force applied, k is the spring constant, and X is the extension of the spring from its resting point.
Substituting the values in, we get:
F=100*(0.65-0.5)=100*0.15=15N
Answer:
we can only see the parts of the Moon that are being lit by the Sun.
Explanation:
