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Can someone please check 7. A certain kind of glass has nblue= 1.650 for blue light...

Can someone please check

7. A certain kind of glass has nblue= 1.650 for blue light and nred= 1.610 for red light. If a beam of white light (containing all colors) is incident at an angle of 30.0°, what is the angle between the red and blue light inside the glass?

a. 0.22°

b. 0.45°

c. 1.90°

d. 1.81°

I got B

8. An object is held at a distance of 12 cm from a convex mirror creating an upright image that is 1/3 the object size. What is the focal length of the mirror?

a. -6.0 cm

b. -3.0 cm

c. -9.0 cm

d. -18.0 cm

I got A

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