A student cannot see sharply distant objects beyond 1.4 m. To see distant objects sharply, the student should wear eyeglasses of what type and focal length? A. Diverging, 0.7 m. B. Diverging, 1.4 m. C Diverging; 2.8 m. D. Converging, 1.4 m. E. Converging, 2.8 m.
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A student cannot see sharply distant objects beyond 1.4 m. To see distant objects sharply, the student should wear eyeglasses of what type and focal length?
A. Diverging, 0.7 m.
B. Diverging, 1.4 m.
C Diverging; 2.8 m.
D. Converging, 1.4 m.
E. Converging, 2.8 m.
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- (9) Please don't write on a paper. I can't understand handwritten. Kathrine places a 6.95-cm tall candle a distance of 36.5 cm from a concave mirror. What is the height of the image when the focal length of the mirror is 50.0 cm? a. -135.14 cm b. 36.50 cm c. 25.72 cm d. 3.70 cmWhich of the following statements is not consistent with geometric optics. a. Light rays propagate at small angles relative to the optical axis. b. The diffraction of light is neglected. c. Light rays propagate in straight lines. d. Light rays propagate near the optical axis. e. Ordinary objects always exhibit specular reflection when exposed to light.2. Show that the minimum distance between a real object and its real image given by a convergent lens of focal length f is 4f. Get q as a function of p from 1/p + 1/q = 1/f. Take the derivative of s = p +q to find the value of p for which s is minimum.
- 4. Assume selecting two Crown glasses with na = 1.52 and different Abbe numbers (va) to make following 4 lenses with the same focal length (f), but different lens shape factor (s). Which lens has the smallest spherical and chromatic aberrations? A. va = 81.8, s = 2. В. Va B. va = 81.8, s = 1. C. va = 66.8, s = 2. D. va = 66.8, s = 1. %3D %3D %3D1. When an object is placed in front of a converging lens and the image appears on the opposite side of the lens а. р>0 q >0 f > 0 b. p> 0 q 0 С. р> 0 q >0 f 0 q 0 f > 0provide justification
- 4. An object is 2 meters from a thin lens with a focal length of 50 cm. Apply the thin-lens equation to calculate the image distance from the lens and magnification.w9-8 A diverging lens has a focal length of −8.00 cm. What is the nature of the image formed when the object is placed at a distance of 24.2 cm from the lens? a. virtual, upright, and diminished b. real, inverted, and diminished c. virtual, upright, and enlarged d. real, inverted, and enlarged6. The bowl of a ladle is perfectly spherical, with a diameter of 10 cm. If I point the bowl of the ladle toward the sun, where will I get an image of the sun? Include a sketch.
- If the eyepiece of a telescope is replaced with an eyepiece with a focal length twice as long, the magnifying power is a. four times greater. b. two times greater. c. four times less. d. two times less.4-3. Two converging lenses above are placed 20.0 cm apart, both with focal lengths of 10.0 cm. A candle is 30 cm away from the first lens. By means of a neat ray tracing, locate the final image formed by the combination of the two lenses. b) Use mathematics to fully describe the image created by the lenses.