A 9.0 cm object is placed in from of a mirror and the image formed is upright, behind the mirror, and 3.0 cm in size. Which of the following statements is true and the most inclusive?
A. the magnification is 1/3
B. the magnification is -1/3
C. the image is virtual
D. the magnification is 1/3 and the image is virtual
E. the magnification is -1/3 and the image is virtual
D. the magnification is 1/3 and the image is virtual
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What is the minimum diameter of a steel wire if it is to support a mass of 80 kg. The elastic limit of steel is 5.0 × 10^8 Pa
a. 1.4 mm b. 2.0 mm c. 1.0 mm d. 2.0 mm
If you stand in front of a convex mirror, at the same distance from it as its focal length,
A) you won't see your image because there is none. B) you won't see your image because it is focused at infinity. C) you will see your image and you will appear smaller than you. D) you will see your image and you will appear larger than you. E) you will see your image and it will be the same size as you except upside down.
Celestial latitude is measured with respect to
the celestial equator a) in degrees north or south. b) in plus or minus degrees. c) in radians north or south. d) in astronomical units.
A multiple slit diffraction grating has a slit separation of 2.00 × 10^-6 m. Find the wavelength of the monochromatic light that will have its second order (m = 2) bright fringe diffracted through an angle of 43.4°. (1 nm = 10-9 m)
a. 616 nm c. 687 nm b. 500 nm d. 120 nm