Question

please not only post the answer....​

Answer 1

Answer:

Step-by-step explanation:

$( - 5$ × $\frac{5}{12})$ ÷ $(\frac{7}{11}$ × $\frac{5}{12} )$

$( \frac{-1}{12} )$ ÷ $(\frac{35}{132} )$

$\frac{-1}{12}$ × $\frac{132}{35}$

$\frac{-11}{15}$ Ans

Answer 2

Step-by-step explanation:

The distance from the center of the lens to the focal point is again called the focal length f of the lens. Note that the focal length and power of a diverging lens are defined as negative. For example, if the distance to F in is 5.00 cm, then the focal length is f=–5.00 cm and the power of the lens is P=–20 D.

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Lenses | Boundless