what is definition of variable aperture?
Ashwini2001:
The definition is: If a lens is adjusted size of an object and changes size of an image of the object by changing the diameter of lens,thickness or position of lens then it is said to variable aperture.
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Variable aperture comes into play if you have a zoom lens. If your lens has two numbers, i.e., F/3.5 to F/5.6, you have what’s called a variable aperture lens. This means your widest aperture (lower number) is different at different focal lengths.
i too saw this in internet. say the defini tion for the 10 th class based
The definition is: If a lens is adjusted size of an object and changes size of an image of the object by changing the diameter of lens,thickness or position of lens then it is said to variable aperture.
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The diameter of the spherical mirror is called its Aperture. It can be simply called as the surface of the spherical mirror.
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