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a) I place an object 37 cm away from a spherical mirror. The image produced is...

a) I place an object 37 cm away from a spherical mirror. The image produced is inverted, and the absolute value of its magnification is 0.42. What is the mirror’s radius of curvature? Express your answer in centimeters, with proper sign.

b) In an x-ray diffraction experiment on a certain crystal, a first-order reflection peak occurs at a Bragg angle of 12.5°. At what Bragg angle do you get a second-order peak from the same family of atomic planes, at the same wavelength? Express your answer in degrees.

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