2 questions, very simple physics 2 class, will rate - 1) if a spherical concave

Question

2 questions, very simple physics 2 class, will rate - 1) if a spherical concave mirror has a radius of curvature R, it's focal length is A) R/4 B) R/2 C) R D) 2R E) 4R
2) if a spherical convex mirror has a radius of curvature R, the magnitude of its focal length is A) R/2 B) R/4 C) R D) 2R E) 4R

QUESTION 21 10 points Save Answer If a spherical concave mirror has a radius of curvature R, its focal length is R:2 2R QUESTION 22 10 pointsSave Answer If a spherical convex mirror has a radius of curvature R, the magnitude of its focal length is R2 R. 2R 4R

Explanation / Answer

1) B) R/2

Spherical mirror has a radius of curvature R and a focal length f = R/2

2) A) R/2

2/R = 1/f   

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