The lens aperture is usually specified as an f-number, the ratio of focal length to effective aperture diameter. A lens typically has a set of marked "f-stops" that the f-number can be set to. A lower f-number denotes a greater aperture opening which allows more light to reach the film or image sensor.
Answer:
80 x 16
Explanation:
4 x 4 x
---- = ---- ----- = -----
5 100 5 20
400 / 5 = 80 80 / 5 = 16
Answer and Explanation :
It contributes to economic growth and transparency. It ensures competitive markets. Supply and demand create competition, which helps ensure that the best goods or services are provided to consumers at a lower price.
Answer:
D
Explanation:
medicine was a part-time practice becuase the passage says, " documents of the time describe a doctor who sold "tea, sugar, olives, grapes, achovies, and prunes" along with medication"
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