In the figure, the radius of curvature of the curved part of the ...

[saraeharris]

In the figure, the radius of curvature of the curved part of the lens is 24.0 cm, and the refractive index of the lens material is 1.750. What is the focal length of the lens?
 
  A) +32.0 cm
  B) -32.0 cm
  C) -16.0 cm
  D) +13.8 cm
  E) -13.8 cm

Question 2

In the figure, the radius of curvature of the curved part of the lens is 35.0 cm, and the refractive index of the lens material is 1.620. What is the focal length of the lens?
 
  A) +56.5 cm
  B) -56.5 cm
  C) +28.2 cm
  D) +21.6 cm
  E) -21.6 cm

[l.stuut]

Answer to Question 1

Answer: A

Answer to Question 2

Answer: B

[saraeharris]

TYSM

[mcarey591]

Thanks for the timely response, appreciate it